|
| corn planted into 12 inch rye.
all treatments have same rate of nitrogen at 150 lbs N per acre. forms and placement differ. Replicated 8 row plots.
no cover crop, fall ammonia- 220 bushels
cover crop, fall amonnia -220 bushels
cover crop, fall ammonia + 50 lbs N as 2x2-240 bushels
cover crop, 50 lbs fall ammonia + 100 lbs N as urea + AMS - 240 bushels
two on farm tests showed similar response to plot study.
dry summer, I think the substitute recharge was greater in the cover crop creating the yield advantage. | |
|
corn after cereal rye
