So your UAN over there is 28%? Ours here in Australia is about 42. No wonder I burned our wheat! And it sounds like your intention is to not get any on leaf - no leaf absorption? I’ve been trying for leaf absorption. 👍
We dilute UAN to 28% so it does not salt out under cold temperatures. My guess is your UAN is 32%, I believe that is as high as you can get into solution. We use 32% UAN in season when it won't be stored over winter. Spraying straight 28% or 32% right on the leaf with fine droplets (herbicide nozzles) will definitely burn the leaves. Very little N is absorbed through the leaf regardless, roots have evolved to take up N, not leaves. Even when a safer N source is applied in a foliar application, at least 90% is washed off the leaves and taken up by the roots in most studies that have looked at this.
@@oldfartonabmx2122 Brochure shows 42.5% weight per volume. 32% weight per weight. 32% is all that can dissolve on a weight per weight basis. Fertilizer nitrogen is always reported on a weight per weight basis here. Not sure in Australia.
Even after splitting nitrogen, i got the dreaded burns. But i saw the weeds were dead, finished, and the wheat couldn't look better in terms of yield potential
