Mississippi State University, Starkville

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


Weather

A hard-packing rain immediately after planting on April 15 forced replanting. There was a wetter and cooler than normal growing season.

Rainfall Summary

                         Inches
       March. . . . . . . 10.87
       April. . . . . . .  2.45
       May. . . . . . . .  2.17
       June . . . . . . .  6.06
       July . . . . . . .  7.02
       August . . . . . .  2.28
                          -----  
       Total  . . . . . . 30.85



Table 8A. Results from 27 corn hybrids grown with irrigation at the Mississippi State University, Starkville, 1994 (early maturity)

--------------------------------------------------------------------------------------
                              Yield    2 yr     Root    Stalk   Ear          Harvested
Hybrid                        1994     avg.    Lodging Lodging  Ht.            Stand
Number      Brand            ---(bu/acre)---     (%)     (%)   (in) Moisture  (x1000)
--------------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------------
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



Table 8B. Results from 22 corn hybrids grown with irrigation at Mississippi State University, Starkville, 1994 (late maturity)

--------------------------------------------------------------------------------------
                              Yield    2 yr     Root    Stalk   Ear          Harvested
Hybrid                        1994     avg.    Lodging Lodging  Ht.            Stand
Number      Brand            ---(bu/acre)---     (%)     (%)   (in) Moisture  (x1000)
--------------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------------
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