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Title Page | |
Agenda | |
Table of Contents | |
Introduction | |
Introduction | |
List of faculty | |
Facilities of AREC - Bradenton | |
Research | |
Acknowledgement | |
Map: location of AREC |
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Front Cover
Front Cover Title Page Title Page Agenda Page 1 Table of Contents Page 2 Page 3 Introduction Page 4 Introduction Page 5 List of faculty Page 6 Page 7 Facilities of AREC - Bradenton Page 8 Page 9 Research Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Acknowledgement Page 37 Page 38 Map: location of AREC Page 39 |
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pi t ' :l' ? t :*.. :** 1-!'* : .b ; *' ^ *; ,--*'*. .4, It I .- ";-1. ,t. '. Flif 'Iur - t ., ;V ' t; :: i : i' t.~'- .v i . I I s,. ;i i ;- 'i r ~ '' - ?: ~ulbd r^JT '' ;r (^ -,* "'i ^c- *! r I ~rrl i.F r~ I' '' r- ! ,. ,, S-C Agricultural Research & Education Center Bradenton, Florida 34th Vegetable Field Day May 22, 1981 Bradenton AREC Research Report GC1981-3 G.A. Marlowe & W.E. Waters, Editors Printing: Editorial Dept., IFAS University of Florida Gainesville, Florida AGRICULTURAL RESEARCH & EDUCATION CENTER BRADENTON 34th Vegetable Field Day Program Field Day Coordinator George A. Marlowe, Jr. Friday, May 22, 198 Moderator: Luther A.M. 9:45 10:45 9:45 9:55 10:05 10:15 10:25 10:35 10:45 Moderator: R. M. A 11:00 12:00 11:00 11:15 11:25 11:35 11:45 P.M. 12:00 - 1:30 - 1:15 3:30 1 Rozar, Sarasota County Extension Director Research Highlights by the Research and Extension Faculty Welcome and Introduction W. E. Waters, Center Director Off-season Management of Nematodes...........A. J. Overman IPM Research on Tomatoes and Crucifers........D. J. Schuster Air Pollution Research on Tomatoes............S. S. Woltz Weed Control Programs for Vegetables..........J. P. Gilreath Cauliflower Variety Evaluation................D. S. Burgis Tomato Variety Evaluation....................W. E. Waters alberg, Manatee County Extension Director Continuation of Research Highlights Comparisons of Seep and Trickle Irrigation and Fertilizer Placement of Cauliflower.......A. A. Csizinszky Refinements in the Full Bed Mulch System......C. M. Geraldson Evaluation of Subsurface Tile Irrigation and Water Recovery System....................C. D. Stanley Economic Evaluation of Subsurface Tile Irrigation and Water Recovery System...........J. W. Prevatt Potential Forage Production for Vegetable Growers ....................................C. G. Chambliss Picnic box lunch under the oaks at AREC-Bradenton Tour of research plots AREC-Bradenton Moderators: R. T. Montgomery, Manatee County Extension Agent and G. J. Marlowe, Jr. Adjourn 3:30 TABLE OF CONTENTS Page Schedule of Activities................................................. 1 Table of Contents. ..................................................... 2,3 Introduction........................................................... 4 History of Station..................................................... 5 List of Faculty ....................................................... 6,7 Facilities of AREC-Bradenton...................... ....... .. ............ 8 Acknowledgement of Industry Support Contributors......................37,38,39 FIELD TOUR (R. T. Montgomery, Manatee County Extension Agent and G. A. Marlowe) Faculty and Experimental Plots Listed Respective to Stations............................................. 9 TOUR STOPS #1 #2 #3 #4 #5 #6 #7 #8 #9 #9 Evaluation of Horticultural Quality and Yield Potential of Cherry Tomatoes (D. S. Burgis and W. E. Waters)........ Evaluation of Plant Spacing Response of Fresh Market Tomatoes (D. S. Burgis)................................... Replicated Tomato Variety Trial (D. S. Burgis and W. E. Waters)............................................ Leafminer Resistance in Tomatoes (D. J. Schuster)......... Pickleworm Resistance in Melons (D. J. Schuster).......... Insect and Nematode Distribution on Tomato (D. J. Schuster and A. J. Overman) ....................... Late Blight and Bacterial Leaf Spot Control on Tomatoes (J. P. Jones, D. J. Schuster and A. J. Overman).. Soil Fumigation Trials (A. J. Overman) Off-Season Soil Management and Fumigation (A. J. Overman). Response of 6 Tomato Cultivars to Soil Fumigation (A. J. Overman and D. J. Schuster)....................... TOUR STOPS #10 #11 #11 #11 #12 #12 #12 #13 #14 #14 #15 #15 #15 (Continued) Evaluation of a Water Conveyance and Recovery System for Ditch Irrigation (C. D. Stanley, J. W. Prevatt and W. E. Waters)...................... .................. Evaluation of New Tomato Varieties (D. S. Burgis and W. E. Waters)........................................... ... AREC Tomato Introductions, Observational Blocks, to be Harvested for Seed (D. S. Burgis and W. E. Waters)..... Subsurface Tile Irrigation for Vegetables (C. D. Stanley, J. S. Rogers, J. W. Prevatt and W. E. Waters)............. Seepage Irrigation Experiments with Vegetables (A. A. Csizinszky and C. D. Stanley) ..................... Tomato Variety Trials (A. A. Csizinszky).................. Utilization of Residual Fertilizers of Vegetable Fields by Fuel Convertible Crops (A. A. Csizinszky, C. G. Chambliss and J. W. Prevatt)........................ 'Stability of the Root Environment (C. M. Geraldson)....... Snapbean Weed Competition Experiment (J. P. Gilreath)... Tomato Herbicide Evaluation (J. P. Gilreath).............. Trickle Irrigation Experiments with Vegetables (A. A. Csizinszky and C. D. Stanley) ...................... Nematicides via the Drip Irrigation System (A. J. Overman) Evapotranspiration Requirements of Subirrigated Tomatoes (C. D. Stanley, A. J. Overman and A. A. Csizinszky)....... Page 20 21 22 23 24 26- 27 29 30 31 32 34 35 INTRODUCTION On behalf of the faculty and staff, I extend to each of you a most cordial welcome to the Agricultural Research and Education Center at Bradenton. This Center was initiated in 1925 as a one-man operation in Palmetto and the first ornamental programs began about 17 years later. This Center, with affiliated Agricultural Research Centers located in Dover and Immokalee, Florida, is a Research and Education unit of the University of Florida's Institute of Food and Agricultural Sciences. In Bradenton we have 12 research scientists from various disciplines of training who participate in vegetable plant research programs. Each research scientist also holds a joint appointment with his subject matter department at the University of Florida. This combination of a broad base of research disciplines, industry contacts and an excellent faculty makes the interdisciplinary cooperative team approach to research problems far more productive than could otherwise be accomplished with limited investment in independent programs. An integral part of the overall mission of this Center deals directly with the vegetable industries in Florida through research programs in (1) Genetics, breeding and variety development; (2) Biological, chemical and mechanical pest control; (3) Production efficiency, culture, management and environmental stress; (4) Alternate energy sources, energy conservation and engineering; (5) Mechani- zation, harvesting, handling, processing, transporting and post harvest physiology of horticultural products; (6) Food quality, safety and utilization practices; (7) Air, water and land pollution; (8) Water management and conservation; (9) Advancement of basic knowledge of the various scientific disciplines repre- sented by the faculty; and (10) Assistance to the cooperative extension service, departments in the College of Agriculture and other Research Centers with extension, educational training and cooperative research programs for the benefit of producers, consumers and students. Information presented in this publication summarizes the active research projects under way this season. We sincerely appreciate your interest and support of these research programs and continuously solicit your suggestions for improvement and ideas of industry needs from our research and extension programs. Will E.r waters Center Director HISTORY OF THE AGRICULTURAL RESEARCH & EDUCATION CENTER BRADENTON Agricultural Research & Education Center Bradenton originated in the fall of 1925 with construction of the Tomato Disease Laboratory. Tomato Disease Laboratory: In 1925 a 20-acre tract of county-owned property in Palmetto was made available with the cooperation of the Manatee Board of County Commissioners, with money and equipment supplied by local growers. Primary objective of the laboratory was to formulate a control of nailhead spot of tomato. Later studies emphasized the breeding for resistance to Fusarium wilt and the control of tobacco mosaic on tomatoes. In 1937, with the expansion of the vegetable industry in Manatee County and surrounding areas, the State Legislature authorized new facilities for the research program. Vegetable Crops Laboratory: In August, 1938, the Manatee County Commissioners donated eighty percent of the purchase price of a 106-acre tract on the east side of Bradenton. This expanded program led to the establishment of the Vegetable Crops Laboratory. Following this relocation, horticultural, entomological and soil studies were initiated on tomatoes, peppers, lettuce, sweet corn and other vegetables. Since the laboratory was located in the gladiolus growing area, the scope was further broadened in 1942 to include disease problems confronting gladiolus growers. Gulf Coast Experiment Station: In March, 1951, at a meeting of the State Board of Control, the Vegetable Crops Laboratory was given the status of a branch station and was renamed the Gulf Coast Experiment Station. Investigations were then initiated dealing with chemical weed control, nematodes and other soil- borne pests. The ornamental phase was broadened to include chrysanthemums and other commercial cut flowers. In the late 1950's it became apparent that the facilities on the outskirts of Bradenton were no longer adequate for the research program. In 1959 a 200-acre tract was acquired 8 miles east of Bradenton. All of the vegetable experimental field programs were moved to this new location. In 1965, upon completion of the construction of office and laboratory facilities, farm buildings, greenhouses and a residence, all research programs were con- ducted on this new land. Agricultural Research & Education Center Bradenton: In 1971 the Gulf Coast Experiment Station was renamed Agricultural Research & Education Center to emphasize the programs of both research and education. Active programs are in process on production problems associated with vegetables and ornamentals grown on the sandy soils of Florida. AREC-Bradenton has administrative and research supervision over two satellite stations: ARC-Immokalee (formerly the South Florida Field Laboratory) and ARC-Dover (formerly the Strawberry and Vegetable Field Laboratory). The former Center specializes in vegetable nutrition and culture, etiology and control of diseases and pasture research, while the latter is the hub of strawberry research in Florida, including breeding, horticultural and pathological studies. CURRENT LIST OF FACULTY, APPOINTMENT DATE AND AREA OF SPECIALIZATION Agricultural Research and Education Center Bradenton, Florida Waters, Will E., 1960, Horticulturist and Center Director. Administration, soil and plant nutrition and herbicides. Burgis, D. S., 1946, Horticulturist. Emeritus. Vegetable production, weed control and growth regulators. Chambliss, C. G., 1976, Extension Agronomist. Develop extension educational programs and cooperative research programs on forage production for south Florida. Csizinszky, A. A., 1976, Asst. Horticulturist. Production systems, crop manage- ment and post-harvest studies of vegetable crops. Engelhard, A. W., 1966, Plant Pathologist. Etiology and control of diseases of ornamental crops. Geraldson, C. M., 1951, Soils Chemist. Soil nutritional problems and their relationship with cultural methods for vegetable production. Gilreath, J. P., 1981, Asst. Horticulturist. Weed control of vegetable and ornamental crops. Harbaugh, B. K., 1975, Assoc. Ornamental Horticulturist. Systems for production, harvesting and marketing of ornamental crops. Howe, T. K., 1979, Asst. in Plant Physiology. Assist Plant Physiologist in disorders and diseases of ornamental and vegetable crops. Jones, J. P., 1958, Plant Pathologist. Etiology and control of diseases of vegetable crops. Magie, R. 0., 1945, Plant Pathologist. Emeritus. Etiology and control of diseases of ornamental crops with emphasis on gladiolus flower and corm diseases. Marlowe, G. A., 1975, Extension Vegetable Specialist. Develop extension educa- tional programs and cooperative research on vegetable crops of southwest Florida. Overman, A. J., 1945, Nematologist. Etiology and control of nematode problems on ornamentals and vegetables. Prevatt, J. W., 1979, Extension Farm Management Economist. Develop extension farm management educational programs in agriculture and cooperative research on production economics of vegetables and ornamentals. Price, J. F., 1978, Asst. Entomologist. Identification, biology and control of insects and mites of ornamentals and strawberry crops. Schuster, D. J., 1975, Assoc. Entomologist. Identification, biology and control of insects and mites of vegetable crops. Scott, J. P., 1981, Asst. Geneticist. Tomato variety development and genetics of characters related to tomatoes. Snowden, S. E., 1980, Asst. in Plant Pathology. Etiology and control of diseases of ornamental crops. Stanley, C. D., 1979, Asst. Soil Scientist. Soil-water relations for ornamental and vegetable crops. Wilfret, G. J., 1969, Geneticist. Breeding and development of new varieties of cut-flowers and other ornamental crops. Woltz, S. S., 1953, Plant Physiologist. Physiology disorders and diseases of vegetable and ornamental crops. 1981, Extension Agricultural Engineering Specialist. Solar energy, water management and general agricultural design engineering. 1981, Asst. Plant Pathologist. Etiology and control of vegetable diseases with emphasis on disease forecasting and fungicide longevity. Agricultural Research Center Dover, Florida Albregts, E. E., 1967, Soils Chemist. Center administration, production, soil and plant nutrition of strawberries and vegetables. Howard, C. M., 1967, Plant Pathologist. Strawberry breeding and etiology and control of vegetable and strawberry diseases. Agricultural Research Center Immokalee, Florida Everett, P. H., 1958, Soils Chemist. Center administration, soil and plant nutrition, production and variety development of vegetable crops. FACILITIES OF AGRICULTURAL RESEARCH & EDUCATION CENTER, BRADENTON The Research and Education Center, Bradenton, has developed excellent new facilities since 1965. Each scientist has available office, laboratory, greenhouse and field areas as well as field and laboratory technicians to support his research programs. The research facilities consist of 200 acres of sandy soil located at the main Center, plus 40 acres near Cortez, Florida, 3 buildings containing 16 offices, library, 9 laboratories, 3 headhouses, 13 greenhouses, 6 storage buildings, 8 walk- in cold rooms, 2 large saran ranges for ornamental plants, maintenance shop, four irrigation wells, a fleet of vehicles and tractors. The list below is a numerical key to facilities sketched on Page 9. KEY TO FACILITIES Numerical Key Building Name State Bldg. No. 1 Office and Laboratories 7601 2 Ornamental Saran House 7616 3 Chemical Storage 7629 4 Soil Boxes 5 Ornamental-Nematology Greenhouse 7628 6 Ornamental Research Saran House 7626 7 Plant Production House 7625 8 Plant Pathology Greenhouse 7615 9 Entomology-Tomato Genetics Greenhouse 7614 10 Horticulture Greenhouse 7613 11 Ornamental-Genetics Greenhouse 7627 12 Herbicide Greenhouse 7611 13 Tomato-Genetics Greenhouse 7610 14 Pesticide Storage 7609 15 Headhouse, Laboratory, Cold Rooms 7624 16 Speedling Greenhouse 7630 17 Storage Shed 18 Well House 19 Equipment Storage 7607 20 Bulb Shed 7621 21 Well House 22 Farm Maintenance 7604 23 Farm Equipment Building 7605 24 Residence 7602 25 Cortez Farm Building (not shown) 7623 26 Soil Sterilization 7631 27 Fumigation Greenhouse 7632 28 Farm Storage Building (not shown) 7633 29 Student Housing Trailer (not shown) 7634 30 Entomology Greenhouse (not shown) 7635 31 Tomato Breeding Greenhouse (not shown) 7636 32 Plant Physiology Greenhouse (not shown) 7637 33 Aluminum Storage Building (not shown) 7638 34 Pavilion (not shown) 7641 35 Tomato Disease Screening Greenhouse (not shown) 7642 36 Soil and Media Storage (not shown) 7643 37 Floriculture Sawtooth Greenhouse (not shown) 7644 38 Pavilion Restroom Facilities (not shown) 39 Two Apartment Trailer (not shown) 7645 40 Fumigation Storage Building 7639 41 Irrigation Storage Building 7640 AGRICULTURAL RESEARCH & EDUCATION CENTER BRAD E N T ON, FLO R I DA N., q CW7 TOUR STOP #1 TOMATO BREEDING Location: Block A, Land 1 (D. S. Burgis and W. E. Waters) Purpose: A replicated comparison of AREC lines (4 inbred and 3 Fl) of Cherry Tomatoes for an evaluation of horticultural quality and yield potential. Evaluation of disease resistances will also be finalized. Crop: Cherry Tomato Cultivars Set: March 3, 1981 Treatments: No. 1 Large Red Cherry Peto 2 Fla. 794874-1 3 Fla. 794881-1 4 Fla. 794882-3 5 Fla. S78139x31 Fl 6 Fla. S7831x32 Fl 7 Fla. S78146x2267 Fl Operation: Plants sprayed twice weekly with fungicide + insecticide for general maintenance until first harvest--weekly insecticide sprays there- after. Weekly harvest will evaluate number and weight (size) yield of ripe and pink fruit over life span of the plants. Summary: All selections should be resistant to Races 1 and 2 of Fusarium wilt, gray leafspot and Early Blight. Location: Block A, Land 2 (2 South Rows) (D. S. Burgis and W. E. Waters) Purpose: Observational evaluation of Fl AREC lines of cherry type tomatoes. Each population has some, but not all, necessary disease resistances and still must be evaluated for quality and size. Crop: Fl Hybrid Indeterminate Cherry Tomatoes Set: March 3, 1981 Treatments: There are 16 entries in these two rows. These are shown only so that those having an interest can see, first hand, the problems and possibilities. Operation: General maintenance sprays of fungicide + insecticide until first harvest (seed saving) weekly insecticide sprays thereafter. Summary: Horticultural quality-yield potential and disease resistances will be monitored and recorded. Promising items will be grown in replicated trial next season. TOUR STOP #2 Location: Purpose: Crop: Set: Treatments: Operation: Summary: TOMATO BREEDING Block A, Lands 3 and 4 (D. S. Burgis) To evaluate production response of fresh market tomatoes to row spacing and within-the-row spacing of tomatoes. Tomato (var. 'Hayslip') March 3, 1981 Four replications (1 rep shown) 1. 9.0 ft row spacing (Land 3) A. 18" in-row B. 24" in-row C. 32" in-row 2. 4.5 ft row spacing (Land 4) A. 18" in-row B. 24" in-row C. 32" in-row Plants sprayed twice weekly with maintenance fungicide-insecticide. Ten plants will be harvested and evaluated for yield and quality. App. No. Plants per Acre Row Spacing In-Row-Spacing 18" 24" 32" 4.5 ft 6456 4842 3652 9.0 ft 3228 2421 1826 TOUR STOP #3 0 TOMATO BREEDING Block A, Land 5 (D. S. Burgis and W. E. Waters) Purpose:! Replicated tomato variety trial. Cultivars to be evaluated for horticultural quality and yield. Crop: Fresh Market Tomatoes Set: March 4, 1981 Treatments: Walter PE Hayslip Burgis Fla. 1A Fla. 1B Fla. 1C Fla. 91914 Duke (Fl) F156VFFStj2 F158VFFSt F12170VFF F12171VFF VPH674 FTE 12 Peto Ferry-Morse Ferry-Morse Keystone Keystone Asgrow Peto Operation: Plants sprayed twice weekly for general maintenance. Multiple harvests will be made to evaluate number and weight of size graded fruits picked mature green. Summary: All varieties will be indexed cover and disease resistance. fruit include color, firmness, for earliness, vine size, leaf Post harvest evaluations of shape, etc. Location: TOUR STOP #4 LEAFMINER RESISTANCE IN TOMATOES Location: Block A, Land 14 (D. J. Schuster) Purpose: To compare the relative resistance of tomato breeding material for resistance to the vegetable leafminer. Crop: Tomato Entries: 1. Walter PF 2. PI 126445 3. PI 126449 4. PI 128230 5. N.S.S.L. 27260 6. UF 763292 7. PI 140403 Operation: Plants will be sprayed weekly with Manzate. Counts of leafminer larvae present in foliage will be completed and related to the amount of sampling time and foliar leaf area. This is done to standardize counts from leaflets of different sizes. Lab studies will be completed to better study the effects of the entries on leafminer adults and larvae. Summary: In past experiments the wild species, PI 126445 and PI 126449, have demonstrated the highest levels of resistance. UF 763292 is hairy and appears to inhibit oviposition. TOUR STOP #5 PICKLEWORM RESISTANCE IN MELONS Block A, Lands 15 and 15A (D. J. Schuster) Purpose: To evaluate selections of melons for resistance to the pickleworm. Crop: Muskmelon Entries: 1. 2. 3. 4. 5. 'Gulf Coast' PI 140471 GCPW 2-15-5-C3 GCPW 2-15-5-B5 GCPW 5-7-15-A2 Operation: Plants are treated weekly with Manzate. Every fruit examined at maturation, and the number of pickleworm feeding holes will be counted. will be larvae and Summary: Selections were originally made from Gulf Coast because PI-140471, previously demonstrated to be resistant, was present in its pedigree. It was thought resistance might be present even though selection pressure was not exerted. The present entries show promise for resistance but may show pseudoresistance. Location: TOUR STOP #6 INSECT AND NEMATODE DISTRIBUTION ON, TOMATO Location: Block B, Lands 8-11 (D. J. Schuster and A. J. Overman) Purpose: 1. To study the spatial and temporal distribution of insect pests and parasites on individual tomato plants. 2. To develop more accurate sampling schemes for key insect pests. 3. To study the spatial distribution and population development of nematodes. Crop: Tomato var. 'Flora-Dade' Operation: The soil was not fumigated prior to planting. Plants are sprayed weekly with Manzate. Twice a week, 5 plants are randomly selected. Each leaf is individually removed and the number of pestiferous - and beneficial insects counted. Once a week, soil samples are taken and examined for the occurrence and abundance of nematodes. Summary: In the fall season, population density for the vegetable leafminer was greatest in the older portions of the plants. Other pests appeared to be more randomly distributed. This information is being analyzed in the computer to determine if more accurate sampling procedures may be devised for the IPM program. Nematode densities were low in the fall, and no patterns of distribution were observable. Location: TOUR STOP #7 LATE BLIGHT AND BACTERIAL LEAF SPOT CONTROL ON TOMATOES Block C, Lands 5 and 23 (J. P. Jones, D. J. Schuster and A. J. Overman) Purpose: 1. To evaluate effectiveness of 'blite-cast' in predicting the occurrence of late blight. 2. To determine if weather factors may be used to determine a spray schedule for late blight. 3. To evaluate the efficacy of spray schedules for control of late blight and bacterial spot. Crop: Tomato var. 'Flora-Dade' Treatments: Operation: Control Control Blite-cast spray schedule with Bravo Bravo Ix weekly Bravo 2x weekly Bravo 2x weekly after appearance of late blight Kocide 101 Ix weekly Kocide 101 + EDTA Ix weekly Plants are sprayed as needed for insect control. Plots are monitored periodically for the incidence and severity of late blight and bacterial leaf spot. One half of each land is irrigated with 1.2 inches every 10 days to maintain moisture conditions favorable for late blight. Summary: In the fall season, the irrigation system was not operable and weather conditions not favorable for late blight. Hence, this disease did not appear. However, bacterial leaf spot was present and results indicated that the addition of EDTA to Kocide 101 gave significant reductions in the number of foliar lesions. TOUR STOP #8 SOIL FUMIGATION TRIALS Block C, Land 4 + 22 (A. J. Overman) Purpose: To evaluate formulations of methyl bromide or D-D with chloropicrin. Tomato cv 'Tempo' Pepper cv 'Early Cal Wonder' Treatments: Broadcast rate Control M. Bromide MB + chlor DD + chlor DD M. Bromide Operation: Fumigants injected in 3 streams 8 inches apart and 6 inches deep. Immediately covered with full-bed mulch 1.25 mil black embossed polyethylene. Treated Mar. 6 and set with containerized transplants Mar. 24. Foliar sprays: Manzate + copper, DiPel and Diazinon. Summary: All methyl bromide formulations controlled nutgrass to date. No other data yet available. Location: Crop: 99.5 75/25 67/33 66/33 85/15 99.5 400 1b/A 375 1b/A 350 1b/A 320 1b/A 260 1b/A 240 1b/A 200 1b/A TOUR STOP #9 OFF-SEASON SOIL MANAGEMENT AND FUMIGATION Block C, Land 2 + 20 (A. J. Overman) Purpose: To measure effect of summer management of tomato. Crop: into the second season Tomato Tempo and Duke Management: Summer 1980 Paraquat fallow Native weed cover Sorghum 6.0 mil clear polyethylene film Fumigants: Operation: Fall 1980 and Spring 1981 Control Telone II Telone C-17 Vorlex Vapam plus Telone II Rate 15 gal/A 30 gal/A 25 gal/A 35 gal/A 35 gal/A 40 gal/A 15 gal/A chisel chisel chisel chisel chisel chisel chisel chisel chisel chisel chisel chisel (middle) (outer) 1. Fumigants injected 8 inches apart and 6 inches deep. 2. Immediately covered with full-bed mulch 1.25 mil black embossed polyethylene. 3. Re-treated Feb. 17 and set with containerized transplants Mar. 9. 4. Foliar sprays: Manzate + copper, DiPel and Diazinon. Summary: In the full crop, solarization increased yield 48% over fallow. Over all treatments, Vorlex reduced symptoms of Verticillium wilt more than other fumigants. Three chisels gave higher yields than one chisel of any fumigant. No data on this season available. Location: TOUR STOP #9 RESPONSE OF 6 TOMATO CULTIVARS TO SOIL FUMIGATION Block C, Lands 1 + 19 (A. J. Overman and D. J. Schuster) To determine effect of soil fumigation on 6 tomato cultivars. Burgis Duke Floradade 908 Tempo FTE 12 Walter Fumigants: Operation: Control Methyl bromide 98% M. bromide 67% + chloro 33% D-D 43% + chloro 57% T EDB 54% + chloro 45% EDB 92.8% EC 400 Ib/A 350 Ib/A 270 Ib/A 7 gal/A 3.7 gal/A Fumigants injected in 3 streams 8 inches apart 6 inches deep. Immediately covered with full-bed mulch 1.25 mil black embossed polyethylene. Treated Feb. 17 and set with containerized transplants Mar. 5. Foliar sprays: Manzate + copper. Summary: Last fall the 6 cultivars were grown without fumigation in this field. Burgis produced the highest yield, Walter the lowest. No data on this season available. Location: Purpose: Crop: TOUR STOP #10 EVALUATION OF A WATER CONVEYANCE AND RECOVERY SYSTEM FOR DITCH IRRIGATION Location: Entire 200 acres of the land used by the Center (C. D. Stanley, J. W. Prevatt and W. E. Waters) Purpose: To evaluate the water budget and economic aspects of a water conveyance and recovery system for irrigated vegetables. Operation: Irrigation water is pumped from main well to a 5-acre holding pond. Water is then pumped from the pond into a semi-closed PVC pipe delivery system to the various fields for crop growth. Runoff water is channeled into main drainage ditches which empty into two catch basins. This water is recovered and pumped back to the 5-acre pond for re-use. Summary: For the 1980 spring production season, the water budget shows an approximate 60% savings in water pumped from the well for this system as opposed to a system in which well-pumped water was put directly into the delivery system. The savings resulted from the recovered water and water seeping into the lake that was used for irrigation. Economic evaluation of the system showed that investment into a water recovery system such as this is, at present, unprofitable. The use of the conveyance system was shown to be economically feasible. Profitable investment into the water recovery system would only occur in the event that water became a very limited resource. TOUR STOP #11 TOMATO BREEDING Block L, Land 2 (D. S. Burgis and W. E. Waters) Purpose: Evaluation of new varieties. Tomato introductions. Observational blocks of Fla. lines and 1 block of new commercial varieties. Crop: Tomatoes Set: March 8, 1981 Treatments: 7 row blocks from north to south -- Fla. 1A (part of irrigation test See Dr. Stanley, Page 23) -- Fla. 1B -- Fla. 1C -- 14 new commercial varieties numbered as follows: Jackpot Hybrid VFFNSt Full House Hybrid #36 Royal Flush Hybrid VFNST Market Hybrid #56 VFFSTj2 Market Hybrid #58 VFFSt Hybrid KS 2170VFF Hybrid KS 2171VFF Hybrid 289 Hybrid E105 Hybrid E401 Hybrid E410 Corda FTE 12 Duke Operation: Ferry-Morse Keystone Sluis and Groot Peto Peto General maintenance sprays of insecticide and fungicide will be made until time of first harvest only insecticide thereafter. Fruit from Fla. lines will be saved for seed. Summary: Horticultural quality yield potential and disease resistances will be estimated and recorded. Outstanding items in Block 4 will be evaluated in a replicated test in the fall of 1981. Location: TOUR STOP #11 TOMATO BREEDING Block L, Land 3 (D. S. Burgis and W. E. Waters) Purpose: AREC tomato introductions. Observational blocks of Fla. lines. Fruit to be harvested for seed increase. Tomatoes March 8, 1981 Treatments: Operation: 7 row blocks from north to south 1. Hayslip 2. Burgis 3. Walter PF 4. Fla. 303 an ornamental dwarf basket type Same as Land 2 Summary: All lines are observational and will be harvested for seed to maintain AREC foundation seed stocks. Location: Block L, Land 6 (D. S. Burgis and W. E. Waters) Purpose: AREC tomato introductions. Observational blocks. harvested for seed. Crop: Set: Fruit to be Tomatoes March 8, 1981 Treatments: 7 row blocks from north to south 1. Fla. 1A (part of irrigation test See Dr. Stanley, Page 23 2. Fla. 2432 4 west rows (3 east rows AREC breeding lines) 3. Fla. 303 an ornamental dwarf Operation: Same as Lands 2 and 3 Summary: All lines are observational and will be harvested for seed to maintain AREC foundation seed stocks. Location: Crop: Set: TOUR STOP #11 SUBSURFACE TILE IRRIGATION FOR VEGETABLES Location: Block L, Lands 2 and 6 (C. D. Stanley, J. S. Rogers, J. W. Prevatt and W. E. Waters) Purpose: To evaluate cultural and economic advantages and disadvantages of subsurface tile irrigation as compared to the conventional ditch irrigation system. Crop: Tomato (Florida 1-A) Set: March 2, 1981 Operation: Irrigation control to minimize runoff is carried out for both ditch and tile irrigation systems. Water tables of 45 cm (18 in) were attempted to be maintained in both plot areas. Daily measurements of water application and water table heights were carried out. Harvesting for total weight, fruit numbers, grade and wt/fruit will be carried out for both plot areas. The effect of distance from the ditch or tile line on yield will also be investigated. Economic evaluations of both systems with respect to ownership and operating costs were made. Summary: Data from the past five seasons indicate no yield advantage for either system. Water use was shown to be cut an average of 60% when using the tile system. No significant effect of the distance a row is from the tile or ditch on yield was detected. Economic evaluations showed that the ditch irrigation system was the more economically attractive of the two systems, but only slightly. Advantages of the tile systems are more precise control of runoff, reduced water usage, more uniform water application and, probably the greatest advantage, the ability to perform as a drainage system in the event of excessive rains. Disadvantages of the system are the inability to maintain as high a water table as ditch irrigation (potentially a major problem in dry years), presently slightly more expensive to install and operate and potential problems with clogging of the tile from organic and inorganic substances in the irrigation water. n TOUR STOP #12 SEEPAGE IRRIGATION EXPERIMENTS WITH VEGETABLES Location: Block J, Land 1 and 2 (A. A. Csizinszky and C. D. Stanley) Purpose: To determine the effect of fertilizer application methods, fertilizer placements and within row plant spacings on cauliflower, green pepper and tomato with seepage irrigation. Cultivars: Cauliflower: 'Snow Crown Hybrid' Green Pepper: 'Keystone Resistant Giant' Tomato: 'Hayslip' I. Fertilizer application methods Fertilizers were applied on a per plant basis, i.e. higher amounts of nutrients with higher number of plants per 100 ft. bed Nutrients applied Crop Cauliflower Green Pepper Tomato Within row plant spacing (inches) 15 18 12 18 20 30 Nutrient N P 0 K20 (lb/100 2f. bed) 3.04 1.53 4.22 2.51 1.26 3.48 4.97 1.86 6.89 3.35 1.26 4.65 4.91 2.64 9.81 3.30 1.78 6.58 II. Fertilizer placement 1) All P and micronutrients and 10% of N & K mixed in the bed and 90% of N & K banded on the shoulders. 2) All fertilizers applied as bed mix 3) All P and micronutrients and 50% of N & K mixed in the bed, the remaining 50% of N & K banded on the shoulders. III. Within row plant spacing Cauliflower: Green pepper: Tomato: in.and 15 in., in double rows per bed; in. between rows in. and 12 in., in double rows per bed in. between rows in. and 20 in., single row per bed General: Cauliflower in Land 1 was harvested by the middle of April. Residual salts in the soil are being utilized by a second crop of high energy plants, with and without added fertilizers, for possible biofuel conversion. Field Guide for Experiments Marker No. Crop 1 Tomato 2 3 4 " 5 6 7 Green Pepper 8 9 " 10 11 12 Fertilizer Placement Bed mix only II Banded Banded + Bed mix II Banded Banded + Bed mix Bed Mix only 11 Plant Spacing (in) 30 20 30 20 30 20 18 12 18 12 18 12 I_ TOUR STOP #12 TOMATO VARIETY TRIALS Block J, Land 5 (A. A. Csizinszky) Purpose: To evaluate the cvs. 'UF1A,' 'UFlB,' 'Hayslip' and 'FTE 12' at three fertilizer placements and at 2 within row plant spacings. The cvs. were planted at low (lx), medium (1.5x) and high (2x) fertilizer levels, at 20 in (51 cm) and at 30 in within row plant spacings. Fertilizers were applied on a per plant basis, i.e. higher amounts with higher number of plants per 100 ft. bed. At the low (Ix) fertilizer treatment, the following amounts of nutrients were applied. Within row plant spacing 20 in 30 in /100 ft ed Ib/100 ft bed 4.88 3.25 1.88 1.25 General: Total soil soluble salt (TSS) determinations were made after transplanting and will be done again after harvest. Three pickings are planned at weekly intervals. Marketable yield, fruit size and number of fruits for each cv. at the various treatments will be measured. Field Experiment Guide: Fertilizer Treatment 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 2x 2x 2x 2x 2x 2 x 2x 2x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x Plant Spacing ( in.) 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 30 20 Location: K20 9.76 6.50 Marker No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Culti var UF 1A UF 1A UF 1B UF 1B Hayslip Hayslip FTE 12 FTE 12 FTE 12 FTE 12 Hayslip Hayslip UF 1B UF 1B UF 1A UF 1A UF 1B UF 1B UF 1A UF 1A Hayslip Hayslip FTE 12 FTE 12 TOUR STOP #12 UTILIZATION OF RESIDUAL FERTILIZERS OF VEGETABLE FIELDS BY FUEL CONVERTIBLE CROPS Location: Block J, Lands 1, 5, 6 (A. A. Csizinszky, C. G. Chambliss, J. W. Prevatt). Purpose: To determine the feasibility of utilizing the residual salts of vegetable fields by growing a second crop of fuel convertible plants. Operation: After a fall crop of tomatoes, winged beans and cauliflowers, and a spring crop of cauliflowers, five different high energy crops were planted with and without added fertilizers in the mulched beds. The high energy crops were: Jerusalem artichoke, Helianthus tuberosus Kenaf, Hibiscus cannabinus leucaena, Leucaena leucocephala ramie, Boehmeria nivea sweet potatoes, Ipomoea batata Fertilizer treatments were as follows: Fertilizer Treatment 18-0-25+2 superphosphate lb/100 ft. of bed. 1 0 0 2 3.0 2.7 3 6.0 2.7 The crop will be evaluated for dry matter, starch and cellulose content. Field Guide for Experiments: Block J-Land 1. Pre crop: Cauliflower, Spring, 1981. Marker Supplemental Fertilizer Treatment No. Crop 18-0-25+2 Superphosphate Ib/A 1 Sweet Potatoes 222 200 2 Sweet Potatoes 444 200 3 Sweet Potatoes 0 0 4 Leucaena 222 200 5 Leucaena 444 200 6 Leucaena 0 0 7 Ramie 222 200 8 Ramie 444 200 9 Ramie 0 0 10 Jerusalem Artichoke 222 200 11 Jerusalem Artichoke 444 200 12 Jerusalem Artichoke 0 0 Block J-Land 5. Pre crop: Cauliflower, Fall, 1980. Marker Supplemental Fertilizer Treatment No. Crop 18-0-25+2 Superphosphate Ib/A 1 Sweet Potatoes 0 0 2 Sweet Potatoes 222 200 3 Sweet Potatoes 444 200 4 Jerusalem Artichoke 0 0 5 Jerusalem Artichoke 222 200 6 Jerusalem Artichoke 444 200 7 Leucaena 0 0 8 Leucaena 222 200 9 Leucaena 444 200 Block J-Land 6. Rows 1 4. Pre crop: Tomato, Fall, 1980. Marker Supplemental Fertilizer Treatment No. Crop 18-0-25+2 Superphosphate Ib/A 1 Leucaena 222 200 2 Leucaena 0 0 3 Kenaf 222 200 4 Kenaf 0 0 5 Sweet Potatoes 222 200 6 Sweet Potatoes 0 0 7 Jerusalem Artichoke 222 200 8 Jerusalem Artichoke 0 0 Block J-Land 6. Rows 5 7. Pre crop: Winged Bean, Fall, 1980. Marker Supplemental Fertilizer Treatment No. Crop 18-0-25+2 Superphosphate 1 Leucaena 222 200 2 Leucaena 0 0 3 Jerusalem Artichoke 222 200 4 Jerusalem Artichoke 0 0 5 Sweet Potato 222 200 6 Sweet Potato 0 0 TOUR STOP #13 STABILITY OF THE ROOT ENVIRONMENT Block I (C. M. Geraldson) Purpose: To study the effect of variations in water control on stability of the root environment and productivity of vegetable crops. Pepper Cal Wonder Tomatoes Duke Hayslip Set 2/16 2/16 2/23 Treatments: Close row 1. 2. Wide row 3. 4. 1200#/A--17.5#/100 ft. 1800 25. 1200 25. 1800 37.5 Operation: Comparisons Close row Wide row Row feet per acre 7340 4840 Population pepper tomato 14,600 3670 9,680 2420 Water table high low 18" 16" 13" 12" Overall field slope 4"/100' Row length 390' Summary: Stability of the root environment has been correlated with yields of more than 40 Ibs/plant and 2000 30 lb units/acre. The effect of field levels, field slope, row length, row spacing, water table depth, bed compaction and water management on stability are being evaluated. Location: Crop: TOUR STOP #14 SNAPBEAN WEED COMPETITION EXPERIMENT Block E, Land 16 (J. P. Gilreath) Purpose: Determine 1) the critical weed-free period and 2) the critical duration of weed competition. This information will tell us when we really need weed control and for how long. Snapbean, cultivar 'Sprite' April 14, 1981 Treatments: No. 1 5 1 2 3 4 5 6 10 6 7 8 9 10 Weedy for x weeks from planting Weedy 0 weeks (hand weeded checks Weedy 2 weeks Weedy 4 weeks Weedy 6 weeks Weedy 8 weeks Weed-free for Z weeks from plant Weed-free 0 weeks Weed-free 2 weeks Weed-free 4 weeks Weed-free 6 weeks Weed-free 8 weeks - weed-free 10 weeks) ng Operation: Plots to be stand to be are hand weeded as necessary. Weed counts and weights made at appropriate times for the various treatments. counts and yield data will also be obtained. All data taken off center row of 3 row plots. Location: Crop: Direct Seeded: are Crop are TOUR STOP #14 TOMATO HERBICIDE EVALUATION Block E, Land 17 (J. P. Gilreath) To evaluate compounds for weed control in transplanted tomatoes. Tomatoes Cultivar 'Hayslip' Transplanted March 31, 1981 Weedy check Hand weeded check Napropamide (Devrinol) Napropamide (Devrinol) PASTS) Diphenamid (Enide) Trifluralin (Treflan) Metribuzin (Sencor) Metribuzin (Sencor) Napropamide + Metribuzin (Devrinol + Sencor) Bifenox (Modown) Bifenox (Modown) MC 10108 (Tackle) Benthiocarb (Bolero) Pebulate (Tillam) + Napropamide (Devrinol) Pendimethalin (Prowl) HOE 00661 HOE 00661 HOE 00661 + Metribuzin (Sencor) HOE 00661 + Metribuzin (Sencor) Operation: Location: Purpose: Crop: Treatments: Treatment No. PPI and pre-transplant treatments applied March 31. Post-transplant treatments applied April 2. Post directed treatments applied April 18. Layby treatment applied April 29. Plots are to be evaluated for early, mid and late season weed control and crop phytotoxicity and yield. Time + Method of Application 1 lb ai/A post transplant + 1 lb ai/A at layby 2 lb ai/A post transplant 0.3 lb ai/A post transplant 4 lb ai/A post transplant 0.75 lb ai/A PPI 0.25 lb ai/A PPI 0.25 lb ai/A post directed spray 1 lb ai/A + 0.25 Ib/A pre s..a. plus 1 + 0.25 lb ai/A post directed 2 lb ai/A PPI 4 Ib/A PPI 0.5 lb ai/A PPI 0.38 lb ai/A post transplant 4 lb ai/A pre transplant 4 lb ai/A PPI + 1 lb ai/A post transplant 0.75 lb ai/A PPI 0.50 lb ai/A post directed 0.75 lb ai/A post directed 0.50 + 0.25 lb ai/A post directed 0.75 + 0.25 lb ai/A post'directed TOUR STOP #15 TRICKLE IRRIGATION EXPERIMENTS WITH VEGETABLES Location: Purpose: Cultivars: Block G, Land 6 (A. A. Csizinszky and C. D. Stanley) To determine the effect of fertilizer application methods, fertilizer placements and within row plant spacings on cauliflower, green pepper and tomatoes with trickle irrigation. Cauliflower: Green pepper: Tomato: 'Snow Crown Hybrid' 'Keystone Resistant Giant' 'Hayslip' I) Fertilizer application methods 1) All N, P, K and micronutrients applied pre-plant in dry form. 2) All P and micronutrients and 50% of N and K applied pre-plant in dry form. The remaining 50% of N & K applied with the irrigation water. Fertilizers were applied on a per plant basis, i.e. higher amounts of nutrients with higher number of plants per 100 ft. bed. Plant nutrients applied at 100% pre-plant fertilizer treatment, in lb/100 ft. mulched bed. Within row plant spacing inches Nutrient P205 lb/100 ft. bed Cauliflower Green pepper Tomato II) Fertilizer placement All dry fertilizer mixed in the 3 in (7.5 cm) deep band. All the P and micronutrients an and the remaining 50% of the N above and around the trickle tut bed in a 12 in (30.5 cm) wide and d 50% of the N & K applied as bed mix & K applied in a 2 in (5 cm) wide band be. III) Within row plant spacing Cauliflower: Green pepper: Tomato: 15 in (38 cm) and 18 in (46 cm) in double row per bed; 12 in (30.5 cm) between rows. 12 in (30.5 cm) and 18 in (46 cm) in double row per bed; 12 in (30.5 cm) between rows. 20 in (51 cm) and 30 in (76 cm), single row per bed. 3.04 2.51 4.97 3.35 4.91 3.30 1.53 1.26 1.86 1.26 2.64 1.78 4.22 3.48 6.89 4.65 9.81 6.58 General: Trickle tube is Chapin twin wall, 4 mil thickness, with pores at 12 in (30.5 cm) apart. Tube placed ih the bed center, 2 in (5 cm) below the soil surface. Irrigation is applied twice per day (9 AM and 5 PM) in gradually increasing amounts as plant size, air temperatures and open pan evaporation increase. Soil moisture is determined periodically during the season. Field Guide for Experiments, Block G, Land 6 Fertilizer appli- cation method Fertilizer placement Toma to Pre-plant, dry only Green peppers I, Pre-plant, dry + liquid with irri- gation water II Bed mix + banded 11 Bed mix only II Bed mix + banded 11 Bed mix only II Bed mix + banded Bed mix only II Bed mix + banded II Bed mix only No. Crop Plant spacing (in) Tomato TOUR STOP #15 NEMATICIDES VIA THE DRIP IRRIGATION SYSTEM Block G, Land 5 (A. J. Overman) Purpose: To evaluate efficacy of nematicides applied in irrigation water. Crop: Tomato cv 'Floradade 908' and Corn cv 'Silver Queen' Treatments: Control Vapam EDB 92.8EC Vapam EDB 92.8EC Vapam + EDB Vapam EDB 92.8EC Vapam + EDB 50 gal/A 4 gal/A 50 gal/A 4 gal/A 50 + 4 gal/A 50 gal/A 4 gal/A 50 + 4 gal/A Operation: Drip hose buried 4 inches off-center and 2 inches deep in the bed. Treatments #2 and #3 injected into the beds through 3 chisels spaced 8 inches apart and 6 inches deep on Feb. 25. Treatments #4, #5 and #6 injected into the drip irrigation system Feb. 25. Treatments #7, #8 and #9 were injected over a period of 9 weeks through the drip hose. Summary: To date the single applications of Vapam and EDB through the tube are equivalent to soil injections. Location: 3 chisels 3 chisels tube tube tube tube tube tube Location: TOUR STOP #15 EVAPOTRANSPIRATION REQUIREMENTS OF SUBIRRIGATED TOMATOES Block G, Land 4 (C. D. Stanley, A. J. Overman and A. A. Csizinszky) Purpose: To determine plant water requirements for field grown subirrigated tomatoes. Crop: Tomatoes (Hayslip) Operation: This is the first season of operation. Constant water tables are maintained by use of the constant-head reservoirs located at each lysimeter box. Daily water use is observed by amount of water withdrawn from the reservoirs. The daily water use is related to plant population, growth stage and the daily atmospheric demand (open-pan evaporation). This data will aid in the development of water use prediction methods based on open-pan evaporation. This information will aid in defining the actual plant water requirements as opposed to total irrigation system water requirements in a vegetable production system. Planned studies include investigation of the effects of varying plant populations, water table heights, types of vegetables and cultivars of the same vegetable on water use. EVALUATION OF SULFUR DIOXIDE (SO2) ON TOMATOES Location: Purpose: Crop: Treatments: Fumigation greenhouses (S. S. Woltz and T. K. Howe) To establish the susceptibility rankings of various tomato cultivars to airborne sulfur dioxide (S02). Tomato, 42 cultivars (typical experiment, not in progress) Fumi ation Treatment No. SO2 Exposure Concentration Duration ppm hours 0.5 1 2 0.5 1 Three fumigation trials resulted in the following list of more resistant and more susceptible lines from the screening trials with 42 cultivars. Resistant Ace Bonanza Jefferson VF145-B7879 Walter Yamaguchi Susceptible Basket Pak Bellarina Chico III Sub-Arctic Red Cherry Results: Delight Large ACKNOWLEDGEMENT OF INDUSTRY SUPPORT FOR THE RESEARCH PROGRAMS AT AGRICULTURAL RESEARCH AND EDUCATION CENTER, BRADENTON, FLORIDA The effectiveness of the Research Programs at the Agricultural Research and Edu- cation Center here in Bradenton has been greatly enhanced by the excellent support from the various segments of the Agri-business industries and producers, both locally and nationally. This support in the forms of financial grants-in-aid, products and services, or equipment, supplements existing state funds and makes each research project at the Center far more productive than could otherwise be realized. We sincerely appreciate your participation in these research programs and are pleased to acknowledge your support. Listed below are the names of agencies, firms or individuals who have contributed significantly to the research programs during the past two years. We trust that our records are complete and say again, "Thank you for your confidence." Abbott Laboratories, North Chicago, IL American Cyanamid Co., Princeton, NJ Asgrow-Florida Co., Palmetto, FL BASF Wyandotte Corp., Parsippany, NJ Baysinger Farms, Ruskin, FL Donald Bates, Lake Placid, FL Bear Hollow Bulb Farms, Lake Placid, FL Bedding Plants Research Assoc., Inc., Okemos, MI Blue Acres Gardens, Piqua, OH Bonney Farms, Lake Placid, FL Boots-Hercules Agrichem. Co., Wilmington, DE Campbell Soup Co., Camden, NJ Capella Farms, Pompano Beach, FL Chapin Watermatics, Watertown, NY Chevron Chemical Co., Richmond, CA CIBA-Geigy, Greensboro, NC Conrel, Buckeye, AZ W. R. Cooper, Sebring, FL Council Farms, Inc., Ruskin, FL Diamond Shamrock Chem. Corp., Cleveland, OH Donald Dittmar, Sebring, FL Dow Chemical, USA, Atlanta, GA DSR Gatorade, Gainesville, FL A. Duda & Son, Oviedo, FL E. I. DuPont de Nemours & Co., Wilmington, DE Duval Sales Corp., Houston, TX W. R. Ellis, Lake Placid, FL Elsberry Farms, Inc., Ruskin, FL Noah Evans, Lake Placid, FL Florida Dept. of Transportation, Sarasota, FL Florida Flower Assoc., Ft. Myers, FL Florida Foundation Seed Producers, Inc., Greenwood, FL Florida Tomato Exchange, Orlando, FL Florida Tomato Packer, Homestead, FL FMC Corp., Niagara Chem. Div., Middleport, NY 4-Star, Inc., Palmetto, FL Fulwood Farms, Sun City, FL Geo. J. Ball, Inc., West Chicago, IL The Fred C. Gloeckner Foundation, Inc., New York, iY Gloeckner Seed Co., New York, NY Happiness Farms, Lake Placid, FL Harllee Farms, Palmetto, FL Harllee-Gargiulo, Inc., Palmetto, FL B. J. Harris, Lake Placid, FL Jessie Harrison, Lake Placid, FL Jack Hendry, Lake Placid, FL Hillsborough Co. Farm Bureau, Valrico, FL Hillsborough Co. Marketing Comm., Inc., Plant City, FL HMS Soil Fumigant, Inc., Palmetto, FL Hooker Chemical and Plastics Corp., Niagara Falls, NY ICI Americas, Inc., Goldsboro, NC IFAS Environmental Center, Univ. of Fla., Gainesville, FL J. J. Plant Brokers, Ruskin, FL Kocide Chemical Corp., Houston, TX R. W. Longabaugh, Sebring, FL M & W Farms, Immokalee, FL Mallinckrodt, Inc., St. Louis, MO Manatee Board of County Commissioners, Highway Dept., Bradenton, FL Manatee Co. Dept. of Human Services, CETA, Bradenton, FL Manatee Co. School Board, Neighborhood Youth Corps, Bradenton, FL Manatee Fruit Co., Palmetto, FL Mattson Farms, Ft. Pierce, FL Merck, Sharpe & Dohm Research Laboratories, Rahway, NJ Mobil Chemical Co., Richmond, VA Ortho Chevron Chemical Co., Orlando, FL Pan American Plant Co., Cortez, FL Pan American Seed Co., Palma Sola, FL Parkedale Berry Farms, Dover, FL Paul Ecke, Jr., Encinitas, CA Peace River Peat Co., Bartow, FL Penick Corp., Orange, NJ Potash & Phosphate Institute, Atlanta, GA Princeton Farms, Immokalee, FL Producers Fertilizer Co., Palmetto, FL R. J. Claprood Co., Sun City, FL Rhone-Poulenc, Inc., Monmouth, NJ Rohm & Haas, Inc., Altamonte Springs, FL Bobby Scarborough, Lake Placid, FL Alto Schuler, Lake Placid, FL Shell Development Co., Modesto, CA Sierra Chemical Co., Newark, CA Smithers-Oasis, Kent, OH Society of American Florists Endowment, Alexandria, VA Southern Agri. Chem. Co., Rubonia, FL Southwest Florida Water Management District, Brooksville, FL Spaulding Bulb Farm, Sebring, FL Speedling, Inc., Sun City, FL Stauffer Chemical Co., Mountain View, CA Strano Bros., Inc., Homestead, FL Sunburst Farms, Inc., Miami, FL ^y~rsisesWW T. i ^.;' :.- hi.!.., 1-;:il "".-:.C *- .~; r~n? ~-. L,; :~3 -1 ' .ri ~r h. 14~ I r th '-a--~~ I. ;: - Ea. a'. .~ ya- 'Is, aa . d aS. aa1 it-- A * irso~altr - -~*~ ~-~~"** * .I -~ .:' .~l .-l' j~CL IUI . .1*i ;iaa ~i adl4~S %a-J-aiaa ~ FJh)~-il Ij)i I a'(a4 -Ji( 'as'. * ;r'* ia: - - .' I. a -." ' ' aI*- .. - p p ... ~a~ja.aa'.a a. ~ ~ : *.IW14.a 'aa a '-a3a. ~.v. -r ,. IA ..-:;.. j~~i~c~~e~a,8 '1~3~ra, : r~-.,-~;~k~iaico~,*~ilJrir r~ty~r ~ ~.. ; ... .._~~~,~:~;cpz~p~.;- ~ -~-~.ji;s~ ~~16~8~es~i~. :?. "C';.':'-l~i~,~Li~BiJs3~1~';:-~i~. TIS :~II.T~qPQe ri`cr ~- -r~ils -Zc~LI..-* -r- Clk ~.islilr :,;.~a~V;rilDlfYBP~ea~~'-- ..hii-c~i-c~.z:. 2.~*:: I ~~..r'q 5. 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