Your corn will want a little nitrogen right from the start so there is where preplant broadcast 28%, 32% or urea come in. You have a couple of days to work it in before you plant before you start losing it into the air, depending on the temperature. You could put 1/2 of your N needs on preplant and the other half sidedress but like what was said before, knee high is about as long as you want to wait to side dress or you will be pruning roots. Now, to get more technical: a supposed crop expert told me some corn hybrids respond best to a split applied nitrogen because they use it gradually, and some hybrids need all of the nitrogen right away at pre-plant. He mentioned DeKalb as being the one that wants all of the nitrogen early and Pioneer as being a hybrid that uses it more gradually. You cannot outguess the weather but you do know what soil type you have. Nitrogen is water soluble and can move with excess water. Sandier soil will allow the nitrogen to leach down too far for the roots to find before the plant needs it all if you get a lot of rain. Black, clay soil will hold it better. If you have sandy soil split applying might help you save some of your valuable N. If you have heavy black soil you might just be better off applying all of the N preplant and getting it over with. No specific way is perfect. Did you notice I didn't mention anhydrous?
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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