It’s interesting isn’t it, we are really concerned about having flat oats and do everything to avoid it.
Reduce early N as that helps and only apply the majority once the plants start stem extension. This leads to an unintentional stressing of the crop through lack of N. Then we apply to but...
When I looked at it Nitamin was a bit cheaper than 28. I don’t know what poly n is. Like all things there will be a variation in loading and pricing to fudge the commercial part.
I read your opening message as, which multi mix should I be using!
If this is correct be careful as you probably won’t buy enough of anything in a pre formulated mix that will be of real value. As @Brisel says target the element at specific timings and use plenty of it, concentration gradient...
AN works as it does because of the nitrate. Urea works as it does because of the ammonia/ammonium.
I would therefore assume DAP works more like urea than Nitrate. Although there would be many more reasons it works however quickly it does.
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