MAFES Black Belt Branch, Brooksville

Soil type. . . . . . . . Brooksville silty clay
Soil pH. . . . . . . . . 7.0
Soil fertility . . . . . P--high, K--medium
Fertilizer added . . . . Preplant--13-13-13 @ 300 lb/a
                                   Sidedress--Nitrogen @ 80 lb/a on 5/17/94
Herbicide application. . Preemergence--Atrazine @ 2 qt/a plus
                                       Lasso @ 3 qt/a
Planting date. . April 22
Harvest date . . September 12




Weather Summary

Adequate soil moisture with a well-prepared seedbed resulted in an excellent stand of corn. Weed control was good until late in the season when a few morningglory vines emerged. An unusual amount of rain was received during the months of June and July, as the rainfall summary indicates.

Rainfall Summary

                      Inches
      March . . . . .  6.84
      April . . . . .  4.22
      May   . . . . .  2.06
      June  . . . . .  8.69
      July  . . . . .  5.28
      August. . . . .  1.53
                      -----
      Total . . . . . 28.62




Table 4A. Results from 39 corn hybrids grown without irrigation at the MAFES Black Belt Branch, Brooksville, 1994 (early maturity)

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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)
--------------------------------------------------------------------------------------
3115        Southland         160.9     --        1       1     47    19.4      22.0
TV 2543     Terral            158.3   101.7       0       0     44    16.9      27.0
ORO 188     Mycogen           150.0   107.1       0       1     45    19.6      23.5
TR 1185     Terra             147.0     --        0       1     44    22.5      25.5
N 7707      Northrup King     146.9   104.3       0       0     39    17.9      28.5
TR 1167     Terra             146.8     --        0       0     44    18.4      26.5
X1183C      Pioneer           145.5     --        0       0     48    19.1      25.0
DK 683      Dekalb            144.1     --        0       0     43    16.8      27.5
HS 9773     HyPerformer       142.2    99.4       0       0     46    20.3      21.5
5111        Southland         142.0     --        0       0     44    16.8      25.0
5510        DynaGrow          141.0   101.6       0       0     41    20.8      26.5
RX 801      Asgrow            139.7     --        0       0     42    17.4      24.0
ICI 8281    ICI               139.0     --        0       0     42    18.0      26.0
8695        Deltapine         139.0   100.6       0       0     48    20.3      28.0
4581        Deltapine         137.3    95.4       0       0     45    18.5      26.5
RX 899      Asgrow            135.4    88.6       0       0     42    18.9      24.5
4653        Deltapine         135.0     --        0       0     43    20.2      26.5
888         AgraTech          135.0    99.8       0       0     43    19.1      23.0
3245        Pioneer           134.4    90.6       0       0     35    21.6      23.0
4682        Deltapine         133.9    94.9       0       0     45    19.7      26.5
TVX 2643    Terral            133.4     --        0       0     44    17.1      28.0
7997        Cargill           132.9     --        0       0     37    17.1      25.0
64W         Zimmerman         132.7     --        0       0     47    17.3      20.5
X830        Southland         132.0     --        0       1     47    19.1      23.0
8936        Cargill           131.9     --        0       0     41    20.4      25.5
N 8020      Northrup King     131.1     --        0       0     42    17.4      25.0
16W         Zimmerman         130.5     --        0       0     44    21.9      21.0
N 7989      Northrup King     130.4    86.4       0       0     44    21.6      25.0
8327        Cargill           129.2     --        0       0     45    20.0      26.0
RX 897      Asgrow            128.0    83.9       0       0     44    17.4      22.5
ICI 8220    ICI               127.0     --        0       0     42    19.2      23.0
DK 649      Dekalb            126.9    95.4       0       0     39    20.1      25.0
810         AgraTech          126.5     --        0       0     42    20.0      22.0
TR E1168    Terra             124.7    92.1       0       0     41    18.8      27.0
RX 907      Asgrow            124.1     --        0       0     41    18.7      23.0
HS 9843     HyPerformer       123.0    81.5       0       0     41    19.2      24.0
3394        Pioneer           123.0    94.4       0       0     42    17.6      24.5
RX 919      Asgrow            113.3     --        0       0     46    21.7      23.5
N 8206      ICI               112.0     --        0       0     38    19.0      24.5
--------------------------------------------------------------------------------------
Overall Mean                  135.0    95.1       Planted       April 22
LSD @ .10                      14.6     9.4       Harvested     September 12
Error Degrees of Freedom      114      96
CV % . . . . . . . .            9.2    11.9
R squared %  . . . .           49      95






Table 4B. Results from 22 corn hybrids grown without irrigation at the MAFES Black Belt Branch, Brooksville, 1994 (late maturity)

--------------------------------------------------------------------------------------
                              Yield    2 yr     Root    Stalk   Ear          Harvested
Hybrid                        1994     avg.    Lodging Lodging  Ht.            Stand
Number      Brand             ---(bu/acre)---    (%)     (%)   (in) Moisture  (x1000)
--------------------------------------------------------------------------------------
3146        Pioneer           146.1    93.4       0       0     43    21.1      23.5
DK 714      Dekalb            143.1     --        0       0     45    19.9      27.5
DK 743      Dekalb            142.8   110.4       0       0     42    19.5      25.5
3163        Pioneer           141.6    90.8       0       0     39    19.3      22.5
N 8727      Northrup King     140.1    99.3       0       0     40    19.5      25.5
X1183F      Pioneer           138.7     --        0       1     44    17.7      22.5
X810        Southland         137.5   100.8       0       0     53    19.9      23.0
TV 2930     Terral            136.3     --        0       0     46    23.3      24.0
N 8656      Northrup King     136.0     --        0       0     45    21.2      28.5
HB 847002   HyPerformer       134.1     --        0       0     43    20.3      23.0
HY 9899V    HyPerformer       133.9     --        2       0     48    24.1      22.5
3156        Pioneer           133.5     --        0       0     46    19.5      23.5
TR 702E     Terra             133.4    90.8       0       0     43    19.6      25.5
HY 9919     HyPerformer       133.0     --        0       0     39    21.1      23.0
N 8811      Northrup King     129.8    91.9       0       0     38    19.5      25.0
3167        Pioneer           128.8    99.3       0       0     43    20.4      24.5
XP 9380     Asgrow            127.1     --        0       0     44    21.1      21.0
3085        Pioneer           126.4    85.2       0       0     47    19.1      21.5
3154        Pioneer           125.9    95.4       0       0     45    18.6      20.5
967         AgraTech          124.1     --        0       0     44    19.9      22.0
3165        Pioneer           122.2    96.7       0       0     41    20.4      24.0
HS 9944     HyPerformer       121.7    80.3       0       0     43    19.7      21.0
--------------------------------------------------------------------------------------
Overall Mean                  133.5    93.9       Planted       April 22
LSD @ .10                      15.0    11.4       Harvested     September 12
Error Degrees of Freedom       63      60
CV % . . . . . . . .            9.5    14.5
R squared %  . . . .           30      93