(edited)Agronomy
sulfur deficiency in cotton and maybe corn.
Put out 30-0-0-2 this year with side dress. Still seems like we are seeing yellow spot. Does it take longer for it to get to the plan? Am I missing something? Seeing it with both corn and cotton. Used volterra nitrogen stabiliser for the first time this year also
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Hopefully that's the case and the Sulfur is becoming more available to the plant. A suggestion if you're continuing to see these S deficiencies show up, applying elemental sulfur in the fall can be a cost effective way to help elevate your S levels. Elemental Sulfur is much like applying inorganic N, when put on in the fall it gives it time to mineralize and become available the next spring, it's ...
On the cotton, yes we’ve had a tissue sample done on those spots last year and that’s what we were told. Those spots are on the sides of ridges so they are usually drier and never yield as well, but recently they have gotten much worse: that’s why we went with the 30-0-0-2 with our side dress. The corn is more wide spread. But as it’s reached tassel it’s lessened a lot so maybe the sulfur is start...
(edited)
Robert, the picture of the corn sure looks like it is S deficiency, harder to tell on the cotton but it almost looks like the chlorotic leaves are the lower leaves. Sulfur is an immobile nutrient in the plant so deficiencies appear first on the newer leaves.
Just curious if you've had S deficiencies in the past or have soil or tissue samples showing you're low?
As long as you applied a soluble S...
Here is the corn with possible sulfur deficiency