Kinda OT When to apply NH3?

super99 · Mar 27, 2015

I'm thinking seriously about having CPS apply my NH3 instead of side dressing later. My farm is sandy hill ground, all my neighbors put it on before planting, but I fear leaching if we get lots of rain. The down side to side dressing when corn is up, my old applicator is 5 knife and after all the turning on the ends, the end rows are pretty thin. I seeded rye cover crop last fall, and it got a late start. Rye is small and just starting to green up. When I spray the burndown, I will add pre emerge herbicide. Should I have it applied as soon as possible, so that the rye will have time to come back before spraying and be worried about N loss OR, have them apply after I spray and just before planting and possibly have weed strips across the field where fertilizer knives disturb the soil? I plan to spray burndown between April 15 and 20 weather permitting. Any thoughts?? Chris

NY 986 · Mar 27, 2015

I would look into liquid or urea as both can have stabilizers added to minimize movement in the soil. Urea is handy as it can be applied with a broadcast spreader. Guys apply ammonia here on sandy ground before the corn is planted. Have your fertilizer guy run the numbers and then you can figure if you want to go on cost alone. Ammonia is not leap and bounds cheaper than the other N sources unlike years ago. We always figured ammonia was hard on soil OM content plus I did not like working with the stuff.

caterpillar guy · Mar 27, 2015

You will get more bang for the buck side dressing the NH3. I have spread urea before planting with good results. The ESN urea will last longer into the season. If you're going to Notill then your burn down will not matter if you knife it in pre or post plant. You probably will have to spray later in the season again after planting anyway. So would not worry about streaks

super99 · Mar 27, 2015

Yes, corn will be planted no till. The field has a big hill in the center and I am going to try to plant around the sides instead of straight up and down, so there will be more end and point rows to destroy side dressing.

RODGEinIL · Mar 27, 2015

We use 32% with agrotain to slow the volitization and to keep more N available for later in the season. I side dress at about the two to three leaf collar stage and usually the corn stands back up in a couple of days. Never liked NH3. 32% was around 423 $/ton last year around here.

Kinda OT When to apply NH3?

super99

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NY 986

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caterpillar guy

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super99

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RODGEinIL

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