Bob Caldwell, Jr., Farms, Brooksville
| Soil type | Brooksville silty clay |
| Soil pH | 7.1 |
| Soil fertility | P--H, K--L |
| Fertilizer added | Preplant -- 0-26-26@300 lb/A |
| Sidedress -- N @ 200 lb/A | |
| Herbicide application | Atrazine @ 2 qt/A + Lasso @ 3 qt/A |
| Planting date | March 31, 1998 |
| Harvest date | August 20, 1998 |
Crop Summary
This site was planted on bedded, stale seedbeds following a soybean crop. Good early-season conditions resulted in good stands and fast early growth. Droughty conditions, especially during June, limited yield potential considerably.
Rainfall Summary
| March | 2.92 inches |
| April | 4.71 inches |
| May | 4.69 inches |
| June | 1.94 inches |
| July | 7.69 inches |
| August | 3.09 inches |
| Total | 25.04 inches |
| Table 6. Results from 23 early-maturing corn hybrids grown without irrigation on a Brooksville silty clay soil in Brooksville, Noxubee County, 1998.1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Hybrid number |
Brand name |
1998 yield |
2-year average |
3-year average |
Root lodging |
Stalk lodging |
Ear height |
Moisture content |
Harvested stand (x 1000) |
| bu/a | bu/a | bu/a | % | % | in | % | |||
33G26 |
Pioneer |
93.3 |
-- |
-- |
0 |
0 |
34 |
19.0 |
27 |
32K61 |
Pioneer |
90.4 |
93.4 |
-- |
0 |
0 |
33 |
24.0 |
27 |
S660 |
Stewart |
89.6 |
-- |
-- |
0 |
0 |
34 |
22.3 |
25 |
TR1157 |
Terra |
88.4 |
94.4 |
97.7 |
0 |
0 |
38 |
25.1 |
29 |
DG5510A |
Funk's |
84.8 |
94.7 |
92.2 |
0 |
0 |
34 |
31.7 |
28 |
S555 |
Stewart |
83.5 |
-- |
-- |
0 |
0 |
30 |
22.9 |
26 |
TR1087 |
Terra |
82.0 |
96.9 |
-- |
0 |
0 |
31 |
16.0 |
30 |
TVX21370 |
Terral |
79.1 |
-- |
-- |
0 |
0 |
39 |
27.1 |
25 |
TV 2543 |
Terral |
78.1 |
-- |
-- |
0 |
0 |
35 |
27.5 |
28 |
3395IR |
Pioneer |
77.3 |
-- |
-- |
0 |
0 |
33 |
18.7 |
27 |
S605 |
Stewart |
75.1 |
-- |
-- |
0 |
0 |
30 |
22.1 |
23 |
8513IT |
Garst |
75.1 |
-- |
-- |
0 |
0 |
32 |
20.1 |
24 |
3394 |
Pioneer |
74.6 |
97.4 |
100.2 |
0 |
0 |
35 |
21.0 |
28 |
S589 |
Stewart |
74.3 |
-- |
-- |
0 |
2 |
27 |
22.1 |
25 |
TR1088 | Terra |
72.5 |
-- |
-- |
0 |
0 |
30 |
22.7 |
29 |
33R87 |
Pioneer |
71.0 |
-- |
-- |
0 |
0 |
34 |
18.1 |
21 |
S599 |
Stewart |
70.9 |
-- |
-- |
0 |
2 |
32 |
19.9 |
22 |
TVX20770 |
Terral |
66.8 |
78.8 |
-- |
0 |
0 |
35 |
20.3 |
26 |
TR1154 |
Terra |
65.3 |
81.6 |
90.9 |
0 |
9 |
38 |
19.5 |
25 |
TV2140 |
Terral |
63.9 |
-- |
-- |
0 |
0 |
35 |
21.4 |
26 |
TV2090 |
Terral |
62.6 |
70.6 |
-- |
0 |
0 |
32 |
23.7 |
28 |
FFR726 |
Elite |
60.3 |
-- |
-- |
0 |
10 |
35 |
15.1 |
20 |
TV2100 |
Terral |
59.5 |
83.5 |
-- |
0 |
0 |
34 |
20.2 |
25 |
Overall mean |
75.6 |
87.9 |
95.3 |
||||||
LSD (.10) |
11.5 |
10.5 |
10.3 |
||||||
Error degrees of freedom |
88 |
64 |
36 |
||||||
CV (%) |
14.4 |
16.0 |
17.6 |
||||||
R2 (%) |
57 |
73 |
82 |
||||||
| 1Planted March 31; harvested August 20. | |||||||||
| Table 7. Results from 25 late-maturing corn hybrids grown without irrigation on a Brooksville silty clay soil in Brooksville, Noxubee County, 1998.1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Hybrid number |
Brand name |
1998 yield |
2-year average |
3-year average |
Root lodging |
Stalk lodging |
Ear height |
Moisture content |
Harvested stand (x 1000) |
| bu/a | bu/a | bu/a | % | % | in | % | |||
3223 |
Pioneer |
99.3 |
106.4 |
91.9 |
0 |
0 |
40 |
27.1 |
28 |
S795 |
Stewart |
97.6 |
-- |
-- |
0 |
0 |
35 |
26.1 |
28 |
DK687 |
DeKalb |
92.1 |
109.7 |
-- |
0 |
0 |
36 |
27.4 |
25 |
TR1167 |
Terra |
90.1 |
95.9 |
82.1 |
0 |
0 |
40 |
25.7 |
24 |
AP9939 |
AgriPro |
88.9 |
-- |
-- |
0 |
0 |
34 |
26.7 |
23 |
3163 |
Pioneer |
88.8 |
107.1 |
94.8 |
0 |
0 |
36 |
29.9 |
23 |
3167 |
Pioneer |
88.5 |
87.1 |
80.9 |
0 |
0 |
35 |
34.1 |
26 |
AP9909 |
AgriPro |
88.3 |
87.9 |
-- |
0 |
0 |
38 |
26.8 |
27 |
HS 9843 |
HyPerformer |
87.9 |
98.7 |
92.6 |
0 |
0 |
38 |
28.3 |
26 |
8222IT |
Garst |
84.2 |
-- |
-- |
0 |
0 |
36 |
29.8 |
23 |
dk5570 |
Douglas King |
83.4 |
-- |
-- |
0 |
0 |
35 |
30.5 |
24 |
RX913 |
Asgrow |
80.0 |
-- |
-- |
0 |
3 |
39 |
23.5 |
22 |
dk5445 |
Douglas King |
79.8 |
-- |
-- |
0 |
0 |
37 |
27.0 |
25 |
AP9828 |
AgriPro |
76.8 |
-- |
-- |
0 |
5 |
40 |
24.1 |
26 |
AP9707 |
AgriPro |
76.6 |
-- |
-- |
0 |
0 |
35 |
24.1 |
26 |
TV 2930 |
Terral |
76.1 |
-- |
-- |
0 |
0 |
37 |
28.7 |
27 |
8460 |
Mycogen |
74.9 |
88.8 |
85.5 |
0 |
0 |
37 |
31.2 |
24 |
DK683 |
DeKalb |
72.8 |
97.8 |
83.3 |
0 |
0 |
38 |
29.4 |
24 |
8220 |
Garst |
72.8 |
-- |
-- |
0 |
2 |
35 |
27.7 |
22 |
TR1185 |
Terra |
72.3 |
87.8 |
80.5 |
0 |
0 |
39 |
27.3 |
24 |
DK706 |
DeKalb |
72.1 |
86.3 |
83.1 |
0 |
0 |
38 |
27.1 |
26 |
AP9829IMI |
AgriPro |
71.4 |
-- |
-- |
0 |
7 |
38 |
22.4 |
26 |
E1188 |
Terra |
69.6 |
-- |
-- |
0 |
5 |
36 |
24.7 |
28 |
4653 |
Funk's |
68.9 |
-- |
-- |
0 |
0 |
35 |
24.9 |
30 |
FFR943 |
Elite |
68.9 |
-- |
-- |
0 |
0 |
34 |
31.6 |
22 |
Overall mean |
78.4 |
95.8 |
86.1 |
||||||
LSD (.10) |
11.7 |
9.4 |
9.4 |
||||||
Error degrees of freedom |
100 |
80 |
96 |
||||||
CV (%) |
14.2 |
13.2 |
18.0 |
||||||
R2 |
72 |
72 |
46 |
||||||
| 1Planted March 31; harvested August 20. | |||||||||
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