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Wheat - Sorghum - Wheat - Corn and Wheat-Sudan Compared in a Two Year Rotation.
Rancher forage sorghum, Reliance grain sorghum, Piper sudan grass and Nodakhybrid 301 corn are compared as silage crops in this trial. In years when grain sorghum matures, seed yields of this crop and shelled corn yields will also be recorded.
Yields for 1960 are given in Table 10.
| Table 10. Wheat-Sorghum, Wheat-Corn and Wheat-Sudan in two-year rotation | ||||||
Treatment |
Yield |
|||||
| Wheat after forage sorghum: | Plot No. | 61 | 91 | 93 | 122 | Av. |
| Wheat Yield - Bushels Per Acre | 13.8 | 8.8 | 9.3 | 8.8 | 10.2 | |
| Wheat after corn: | Plot No. | 57 | 62 | 89 | 94 | |
| Wheat Yield - Bushels Per Acre | 13.5 | 11.3 | 9.0 | 11.6 | 11.4 | |
| Wheat after grain sorghum: | 11* | |||||
| Cultivated rows: | Plot No. | 28 | 30 | 32 | ||
| Wheat yield Bu. Per Acre | 14.3 | 11.9 | 7.9 | 11.4 | ||
| Solid Drilled | Plot No. | 29 | 31 | 33 | ||
| Wheat yield Bu. Per Acre | 13.7 | 13.4 | 12.6 | 13.2 | ||
| Wheat after Sudan: | Plot No. | 1 | 3 | 5 | ||
| Wheat yield Bushels Per Acre | 9.0 | 7.7 | 8.1 | 8.3 | ||
| *11 Solid drilled grain sorghum plots were considered a total failure in 1959 and were plowed in July. Grain yields in 1960 on these plots reflect the effect of this midsummer tillage. | ||||||
| Table 11. Wheat-Sorghum, Wheat-Corn and Wheat-Sudan in two-year Rotation | ||||||
| Treatment | Yield | |||||
| Forage sorghum after Wheat: | Plot No. | 60 | 90 | 92 | 121 | Av. |
| Silage yield-tons/acre @ 70% Moisture | 1.93 | 1.33 | 4.08 | 2.63 | 2.49 | |
| Corn after wheat: | Plot No. | 56 | 63 | 88 | 95 | Av. |
| Silage yield-tons/acre @ 70% Moisture | 2.86 | 1.27 | 1.65 | 2.14 | 1.98 | |
| Grain sorghum after wheat: | ||||||
| Cultivated rows | Plot No. | 23 | 25 | 27 | Average | |
| Silage yield-tons/acre @ 70% Moisture | 1.97 | 1.49 | 1.67 | 1.71 | ||
| Grain yield-lbs/acre | 220 | 242 | 319 | 260 | ||
| Solid drilled | Plot No. | 22 | 24 | 26 | Average | |
| Silage yield-tons/acre @ 70% Moisture | See footnote1 | |||||
| Sudan after wheat: | Plot No. | 2 | 4 | 120 | Average | |
| Silage yield-tons/acre @ 70% Moisture | 1.50 | .80 | 4.88 | 2.39 | ||
| 1Solid drilled grain sorghum trials were considered a total failure in 1960 and were not harvested. | ||||||