Soil type. . . . . . . . Marietta sandy clay loam
Soil pH. . . . . . . . . 7.3
Soil fertility . . . . . P--high, K--medium
Fertilizer added . . . . Preplant--Phosphorus @ 46 lb/a plus
Potassium @ 60 lb/a plus
Nitrogen @ 50 lb/a
Sidedress--Nitrogen @ 150 lb/a on 6/2/94
Herbicide application. . Preplant (1st planting)--Lasso @ 2 qt/a plus Atrazine @ 2 qt/a
Preplant (2nd planting)--Roundup @ 2 qt/a on 5/6
Postdirected--Lorox @ 1 qt/a on 6/8
Irrigation . . . . . . . Furrow applied--May 28--2 inches/a
June 21--2 inches/a
July 8--1 inch/a
August 5--1 inch/a
Planting date. . . . . . May 6
Harvest date . . . . . . September 26
A hard-packing rain immediately after planting on April 15 forced replanting. There was a wetter and cooler than normal growing season.
Inches
March. . . . . . . 10.87
April. . . . . . . 2.45
May. . . . . . . . 2.17
June . . . . . . . 6.06
July . . . . . . . 7.02
August . . . . . . 2.28
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Total . . . . . . 30.85
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Yield 2 yr Root Stalk Ear Harvested
Hybrid 1994 avg. Lodging Lodging Ht. Stand
Number Brand ---(bu/acre)--- (%) (%) (in) Moisture (x1000)
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TR 1185 Terra 131.6 -- 0 4 45 15.0 26.5
4653 Deltapine 127.2 -- 0 2 43 14.3 27.0
X1183C Pioneer 122.9 -- 0 1 44 14.8 24.5
TR 1167 Terra 120.5 -- 0 1 45 15.7 25.0
DK 683 Dekalb 120.1 -- 0 1 43 14.1 27.5
N 7707 Northrup King 119.6 88.9 0 2 36 14.6 27.5
8695 Deltapine 119.5 106.5 0 6 47 15.3 24.5
4581 Deltapine 119.5 87.8 0 0 43 14.6 24.0
8327 Cargill 118.0 -- 0 3 44 14.4 26.5
RX 897 Asgrow 116.0 85.4 0 1 43 14.5 24.0
ORO 188 Mycogen 113.9 94.1 0 4 44 15.0 24.0
TVX 2643 Terral 111.9 -- 0 0 43 14.6 26.5
N 8206 ICI 110.6 -- 0 1 37 14.9 23.5
RX 907 Asgrow 110.1 -- 0 2 46 15.0 21.5
TR E1168 Terra 109.1 80.1 0 0 41 14.5 26.5
RX 801 Asgrow 107.2 -- 0 2 39 14.1 23.0
3245 Pioneer 106.5 90.8 0 2 38 14.2 21.5
TV 2543 Terral 106.5 84.8 0 1 45 14.2 28.0
RX 899 Asgrow 105.8 81.8 0 5 42 14.4 22.5
4682 Deltapine 105.7 -- 0 2 47 15.3 26.0
N 7989 Northrup King 105.5 87.7 0 2 43 14.3 23.5
N 8020 Northrup King 103.0 -- 0 1 42 14.8 24.0
7997 Cargill 102.3 -- 0 1 38 14.4 26.5
HS 9843 HyPerformer 100.8 96.6 0 0 43 13.9 26.5
RX 919 Asgrow 95.9 -- 0 2 44 14.5 23.0
ICI 8281 ICI 94.6 -- 0 1 42 14.9 23.0
8936 Cargill 90.5 -- 0 1 40 14.9 24.0
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Overall Mean . . . . . . . . 110.9 89.5 Planted May 6
LSD @ .10. . . . . . . . . . 15.9 10.7 Harvested September 26
Error Degrees of Freedom . . 78 60
CV % . . . . . . . . . . . . 12.2 14.4
R squared %. . . . . . . . . 53 86
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Yield 2 yr Root Stalk Ear Harvested
Hybrid 1994 avg. Lodging Lodging Ht. Stand
Number Brand ---(bu/acre)--- (%) (%) (in) Moisture (x1000)
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XP 9380 Asgrow 140.7 -- 0 2 44 15.3 23.0
DK 743 Dekalb 137.1 107.8 0 3 42 14.3 26.5
TR 702E Terra 136.9 96.6 0 1 40 15.2 26.5
3163 Pioneer 134.9 93.4 0 2 42 14.2 24.5
3156 Pioneer 131.4 -- 1 4 46 15.1 24.0
HB 847002 HyPerformer 128.2 -- 0 4 43 14.6 26.0
X1183F Pioneer 127.0 -- 0 3 43 13.6 22.5
TV 2930 Terral 126.1 95.8 0 2 45 15.3 23.5
HY 9899V HyPerformer 125.4 -- 0 3 42 15.2 24.5
3154 Pioneer 124.6 94.5 0 4 43 15.9 22.0
5516 DynaGrow 123.2 -- 0 1 41 13.2 24.5
ORO 8460 Mycogen 122.5 -- 0 1 42 14.8 22.5
N 8656 Northrup King 122.2 -- 0 3 45 14.3 26.0
3085 Pioneer 119.4 91.8 0 1 43 14.6 21.0
N 8727 Northrup King 118.4 92.4 0 2 39 15.0 24.5
N 8811 Northrup King 117.5 88.5 0 2 41 15.7 25.0
3146 Pioneer 116.8 85.8 0 1 44 14.2 23.5
3167 Pioneer 114.5 92.6 0 8 42 15.1 25.0
3165 Pioneer 114.2 92.9 0 6 42 14.9 22.5
HY 9919 HyPerformer 114.1 -- 0 1 41 14.9 25.0
HS 9944 HyPerformer 113.4 90.4 0 3 43 14.5 27.0
SB 1860 ICI 102.0 -- 0 3 43 15.9 23.0
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Overall Mean . . . . . . . . 123.2 93.5 Planted May 6
LSD @ .10 . . . . . . . . . 15.0 10.8 Harvested September 26
Error Degrees of Freedom . . 63 66
CV % . . . . . . . . . . . . 10.3 13.8
R squared % . . . . . . . . 51 90