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IN | I think where guys see a lot of benefit to different N types applied to mainly due to timing differences. Guys that have put on 200 of their 200 pounds of N with fall NH3 and then have switched to 25lbs with planter and 175 NH3 have provided the plant with what it needs to get going and have a majority left to use the rest of the season. Corn can’t have a bad day in the field. Cold and wet after emergence and that 25lbs of N will do a lot to keep the corn healthy where all fall NH3 won’t be there yet to give it the start it needs. It’s sort of like our own bodies fighting infections. If you start out dehydrated and get a cold with no means of rehydrating until you get to a hospital for an IV you’re way behind the 8 ball. But if you had some water to drink the night before you went to the hospital you’d be better off before you got an IV.
I think corn responds much of the same way. Feeding it what it needs and when it needs is never done with one physical type of N. You can’t put NH3 on tasseled corn as a gas but you can’t put on
28 or 32 with a high clearance machine and have a response to yield. I like splitting my chances with a form of dry, liquid, and gas all at different times. It’s just what works here. But we push for 250bu corn so for areas that top out at 200 on gravel these types of scenarios don’t work the same. | |
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Does corn benefit from multiple types of N ?
