Duke Morgan Farm, Shaw
| Soil type | Forrestdale silty clay |
| Soil pH | 6.2 |
| Soil fertility | P--M, K--H |
| Fertilizer added | Preplant -- 11-37-0
@ 15 gal/A Sidedress -- N @ 290 lb/A |
| Herbicide application | Preemergence
-- Dual @ 1 qt/A Postemergence -- Atrazine @ 2 qt/A + 2,4-D @ 1 qt/A |
| Irrigation | Furrow applied -- May 15, June 8, June 18, June 29, July 6, July 18, July 27 & Aug. 5 |
| Planting date | March 27, 1998 |
| Harvest date | August 24, 1998 |
Crop Summary
The soil was rowed up the previous fall, and a burn-down herbicide was applied in the spring before planting. Infrequent rainfall and extremely high temperatures necessitated intense irrigation management during the growing season. Three applications of insecticide were applied to control corn borers.
Rainfall Summary
| March | 4.56 inches |
| April | 4.35 inches |
| May | 4.62 inches |
| June | 1.59 inches |
| July | 5.70 inches |
| August | 0.71 inches |
| Total | 21.53 inches |
| Table 10. Results from 38 early-maturing corn hybrids grown with irrigation on a Forrestdale silty clay soil in Shaw, Bolivar 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 | % | |||
TR1157 |
Terra |
215.5 |
202.2 |
-- |
0 |
0 |
48 |
17.0 |
30 |
3245 |
Pioneer |
214.0 |
210.9 |
-- |
0 |
0 |
42 |
17.6 |
28 |
DG5510A |
Funk's |
212.8 |
199.1 |
-- |
0 |
0 |
42 |
19.5 |
31 |
S555 |
Stewart |
209.9 |
-- |
-- |
0 |
0 |
37 |
16.4 |
27 |
FFR726 |
Elite |
205.9 |
-- |
-- |
0 |
0 |
42 |
16.4 |
31 |
TV2100 |
Terral |
204.9 |
202.2 |
-- |
0 |
0 |
41 |
16.6 |
29 |
RX 897 |
Asgrow |
204.8 |
195.3 |
-- |
0 |
0 |
47 |
16.9 |
27 |
S660 |
Stewart |
203.8 |
-- |
-- |
0 |
0 |
39 |
16.1 |
26 |
RX813 |
Asgrow |
202.1 |
187.4 |
-- |
0 |
0 |
37 |
18.0 |
28 |
TVX20770 |
Terral |
201.5 |
-- |
-- |
0 |
0 |
39 |
15.2 |
27 |
32K61 |
Pioneer |
197.9 |
199.8 |
-- |
0 |
0 |
44 |
17.9 |
27 |
TV2140 |
Terral |
197.4 | 192.6 |
-- |
0 |
0 |
44 |
17.2 |
27 |
8513IT |
Garst |
197.4 |
-- |
-- |
0 |
0 |
40 |
16.3 |
26 |
TR1154 |
Terra |
196.3 |
184.4 |
-- |
0 |
0 |
45 |
16.5 |
27 |
XP8897 | Asgrow |
194.1 |
-- |
-- |
0 |
0 |
36 |
17.5 |
26 |
33R87 |
Pioneer |
194.1 |
-- |
-- |
0 |
0 |
41 |
16.4 |
23 |
TR1087 |
Terra |
193.9 |
195.9 |
-- |
0 |
0 |
41 |
15.7 |
30 |
TR1088 |
Terra |
193.6 |
-- |
-- |
0 |
0 |
39 |
15.5 |
31 |
RX810 |
Asgrow |
193.5 |
-- |
-- |
0 |
0 |
36 |
16.9 |
28 |
TV2090 |
Terral |
192.5 |
-- |
-- |
0 |
0 |
41 |
16.8 |
30 |
S599 |
Stewart |
191.0 |
-- |
-- |
0 |
0 |
40 |
16.3 |
24 |
TV 2543 |
Terral |
189.9 |
-- |
-- |
0 |
0 |
43 |
17.5 |
30 |
DK626 |
DeKalb |
189.6 |
-- |
-- |
0 |
0 |
43 |
15.6 |
26 |
Genesis 2812 |
Genesis |
189.5 |
-- |
-- |
0 |
0 |
38 |
16.2 |
23 |
RX760 |
Asgrow |
189.4 |
-- |
-- |
0 |
0 |
34 |
16.4 |
27 |
RX740 |
Asgrow |
184.3 |
-- |
-- |
0 |
1 |
38 |
15.8 |
25 |
S589 |
Stewart |
184.0 |
-- |
-- |
0 |
0 |
35 |
17.1 |
26 |
3245IR |
Pioneer |
182.4 |
-- |
-- |
0 |
0 |
43 |
18.3 |
27 |
33G26 |
Pioneer |
177.0 |
-- |
-- |
0 |
0 |
44 |
16.7 |
26 |
RX826 |
Asgrow |
175.1 |
-- |
-- |
0 |
0 |
38 |
16.8 |
26 |
Genesis 1815 |
Genesis |
174.6 |
-- |
-- |
0 |
0 |
47 |
15.8 |
28 |
3394 |
Pioneer |
173.0 |
-- |
-- |
0 |
0 |
41 |
16.3 |
26 |
ATX770 |
AgraTech |
170.8 |
180.5 |
-- |
0 |
0 |
44 |
17.0 |
24 |
ATX725 |
AgraTech |
170.0 |
-- |
-- |
0 |
0 |
36 |
16.6 |
24 |
S605 |
Stewart |
167.9 |
-- |
-- |
0 |
0 |
37 |
16.6 |
24 |
3395IR |
Pioneer |
162.9 |
-- |
-- |
0 |
0 |
43 |
12.7 |
25 |
RX770 |
Asgrow |
157.6 |
-- |
-- |
0 |
0 |
39 |
12.8 |
28 |
TVX21370 |
Terral |
131.0 |
148.2 |
-- |
0 |
0 |
46 |
13.3 |
21 |
Overall mean |
189.1 |
191.4 |
-- |
||||||
LSD (.10) |
30.6 |
16.4 |
-- |
||||||
Error degrees of freedom |
148 |
96 |
-- |
||||||
CV (%) |
15.4 |
11.5 |
-- |
||||||
R2 (%) |
36 |
51 |
-- |
||||||
| 1Planted
March 27; harvested August 24. 2No 3-year average. |
|||||||||
| Table 11. Results from 28 late-maturing corn hybrids grown with irrigation on a Forrestdale silty clay soil in Shaw, Bolivar 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 | % | |||
DG5516 |
Funk's |
209.8 |
-- |
-- |
0 |
0 |
46 |
17.5 |
31 |
AP9707 |
AgriPro |
202.4 |
-- |
-- |
0 |
0 |
41 |
17.0 |
27 |
E1188 |
Terra |
201.8 |
-- |
-- |
0 |
0 |
43 |
18.9 |
30 |
DK683 |
DeKalb |
194.0 |
180.9 |
-- |
0 |
0 |
48 |
13.4 |
26 |
TR1167 |
Terra |
191.3 |
181.9 |
-- |
0 |
0 |
44 |
18.1 |
30 |
3223 |
Pioneer |
189.8 |
196.5 |
-- |
0 |
0 |
47 |
17.9 |
28 |
DK687 |
DeKalb |
187.6 |
179.8 |
-- |
0 |
0 |
38 |
13.5 |
22 |
TR1185 |
Terra |
186.5 |
180.3 |
-- |
0 |
0 |
44 |
19.5 |
27 |
3163 |
Pioneer |
185.9 |
188.3 |
-- |
0 |
0 |
43 |
19.4 |
25 |
FFR943 |
Elite |
184.4 |
-- |
-- |
0 |
14 |
42 |
20.4 |
26 |
AP9829IMI |
AgriPro |
183.0 |
-- |
-- |
0 |
0 |
48 |
17.8 |
28 |
AP9939 |
AgriPro |
182.9 |
-- |
-- |
0 |
0 |
43 |
21.2 |
26 |
8460 |
Mycogen |
181.1 |
170.4 |
-- |
0 |
0 |
41 |
21.0 |
22 |
3167 |
Pioneer |
180.9 |
192.9 |
-- |
0 |
0 |
43 |
22.8 |
26 |
HS 9843 |
HyPerformer |
180.8 |
180.9 |
-- |
0 |
0 |
46 |
18.6 |
28 |
AP9828 |
AgriPro |
180.1 |
-- |
-- |
0 |
0 |
47 |
18.4 |
26 |
RX913 |
Asgrow |
179.3 |
-- |
-- |
0 |
0 |
46 |
18.1 |
25 |
S795 |
Stewart |
179.0 |
-- |
-- |
0 |
0 |
43 |
16.6 |
27 |
DK714 |
DeKalb |
172.9 |
178.6 |
-- |
0 |
0 |
38 |
15.1 |
20 |
967 |
AgraTech |
169.8 |
-- |
-- |
0 |
0 |
30 |
15.7 |
18 |
DK706 |
DeKalb |
162.0 |
169.4 |
-- |
0 |
0 |
36 |
15.8 |
20 |
RX 938 |
Asgrow |
160.5 |
177.5 |
-- |
0 |
0 |
45 |
18.9 |
26 |
TV 2930 |
Terral |
157.1 |
169.2 |
-- |
0 |
0 |
47 |
19.0 |
24 |
AP9909 |
AgriPro |
151.5 |
160.9 |
-- |
0 |
0 |
44 |
19.9 |
25 |
Genesis 2816 |
Genesis |
140.4 |
-- |
-- |
0 |
0 |
40 |
16.2 |
24 |
8222IT |
Garst |
140.1 |
-- |
-- |
0 |
0 |
44 |
18.0 |
24 |
Genesis 1818 |
Genesis |
139.8 |
-- |
-- |
0 |
0 |
43 |
18.2 |
22 |
8220 |
Garst |
132.3 |
-- |
-- |
0 |
0 |
46 |
17.1 |
22 |
Overall mean |
175.2 |
179.1 |
-- |
||||||
LSD (.10) |
30.6 |
19.9 |
-- |
||||||
Error degrees of freedom |
103 |
100 |
-- |
||||||
CV (%) |
16.3 |
14.8 |
-- |
||||||
R2 |
45 |
39 |
-- |
||||||
| 1Planted
March 27; harvested August 24. 2No 3-year average. |
|||||||||
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