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l Agricultural Research and Education Center
Jay, Florida 32565-9524
Jay AREC Research Report WF92-4 June, 1992
Canola Cultivar Trial, 1991-1992
L. S. Dunavin1
A canola cultivar trial was conducted in 1991-1992 which included six culti-
vars planted broadcast at 8 pounds of seed per acre. These plots were planted on
November 5, 1991 on a Dothan fine sandy loam soil (Plinthic Paleudult). Prior to
planting, an application of 400 pounds per acre of an 8-24-24 fertilizer was
disked into the soil. Sulfur was applied at 20 pounds per acre on January 27,
1992 along with 6 pounds per acre of boron. An application of 100 pounds per acre
of ammonium nitrate was made on February 11, 1992. This planting was made with
reasonably favorable soil conditions, and the soil was cultipacked following
planting. Unfortunately a flooding rain of 2.3 inches on November 21 and 0.96
inches the next day evidently resulted in some movement of seed northward out of
the plots into the alleys and reduced the stand in some plots. Corn spurry
became a severe weed problem, particularly in the plots with lower populations
of canola.
Hyola 40 had about 50% of the plants in bloom by February 19, 1992 with no
blooms on any other cultivar at that time. By mid-March most plants in all plots
had some blooms. Hyola 40 was harvested on May 4, and on May 12 and 19 the rest
were harvested. Harvest occurred during a very dry period.
Yield data are shown in Table 1 and, except for PF2886/85 and A114 are not
greatly different from the broadcast-planted yields of last year. The average
yield data for the two years are presented in Table 2. Conversion factors and
climatological data are presented in Tables 3 and 4.
The lowest temperature during the growing season was 240 F on January 21.
No cold damage was noted this year.
i [] 1 i
1Associate Professor of Agronomy.
Table 1. Canola cultivar trial, AREC, Jay 1991-1992.
Yield of Seed
Cultivar Pounds per acret
Hyola 40 1630
A114 1460
Delta 1250
Bingo 1140
All2 1140
PF2886/85 570
LSD (t .05) Not significant
tPounds per acre X 1.12 = kilograms per hectare.
PLANTED: November 5, 1991.
SEEDING RATE: 8 lb./acre broadcast.
SOIL: Dothan fine sandy loam (Plinthic
Paleudult).
FERTILIZER: 400 lb./acre of 8-24-24 on 5 Nov. 91;
20 lb./acre sulfur and 6 lb./acre boron
on 27 Jan. 92; 100 lb./acre ammonium
nitrate on 11 Feb. 92.
HARVESTED: Hyola 40 on 4 May 92 and various plots
r
of each of the others on 12 and 19 May
92.
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Table 2. Two-year average yield of canola cultivars, AREC, Jay. 1990-
1991 and 1991-1992.
Cultivar
Hyola 40
Delta
Bingo
A112
A114
PF2886/85 ....
tThe above yields are for broadcast plantings.
Yield of Seed
Pounds per acret
1670
1150
1130
1120
1070
1040
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Table 3. Conversion factors from English to metric units.
English Unit Factor Metric Unit
pounds per acre multiply by 1.12 kilograms per hectare
pounds per acre multiply by 0.00112 metric tons per hectare
tons (English) multiply by 0.9072 tons (metric)
tons (English) per acre multiply by 2.24 tons (metric) per hectare
inches multiply by 2.54 centimeters
yards multiply by 0.914 meters
miles multiply by 1.609 kilometers
acres multiply by 0.405 hectares
0 Fahrenheit 0.556 (F-32) ...... 0 Celsius .
Table 4. Climatological data for the Agricultural Research and Education Center,
Jay. 1991-92.
Precipitation Temperature Solar Radiation
inches OF Totalt
Month 1991-92 42-year Avg. Avg. Max. Avg. Min. Watts per Square Meter
September
October
November
December
January
February
March
April
May
2.81
0.41
4.85
2.35
9.91
6.64
4.68
1.55
0.77
6.42
3.50
3.96
5.17
4.99
5.21
6.41
4.75
4.43
88.9
82.0
67.4
64.3
59.4
67.1
72.0
78.4
85.7
65.9
54.8
41.2
43.9
38.9
44.9
47.0
53.2
58.2
119,161
125,121
98,165
68,030
69,125
88,692
132,807
159,104
182,403
tRadiometer out of operation on 5 days in September.
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Table 3. Conversion factors from English to metric units.
English Unit Factor Metric Unit
pounds per acre multiply by 1.12 kilograms per hectare
pounds per acre multiply by 0.00112 metric tons per hectare
tons (English) multiply by 0.9072 tons (metric)
tons (English) per acre multiply by 2.24 tons (metric) per hectare
inches multiply by 2.54 centimeters
yards multiply by 0.914 meters
miles multiply by 1.609 kilometers
acres multiply by 0.405 hectares
0 Fahrenheit 0.556 (F-32) ...... 0 Celsius .
Table 4. Climatological data for the Agricultural Research and Education Center,
Jay. 1991-92.
Precipitation Temperature Solar Radiation
inches OF Totalt
Month 1991-92 42-year Avg. Avg. Max. Avg. Min. Watts per Square Meter
September
October
November
December
January
February
March
April
May
2.81
0.41
4.85
2.35
9.91
6.64
4.68
1.55
0.77
6.42
3.50
3.96
5.17
4.99
5.21
6.41
4.75
4.43
88.9
82.0
67.4
64.3
59.4
67.1
72.0
78.4
85.7
65.9
54.8
41.2
43.9
38.9
44.9
47.0
53.2
58.2
119,161
125,121
98,165
68,030
69,125
88,692
132,807
159,104
182,403
tRadiometer out of operation on 5 days in September.
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