When choosing corn topdressing, do not choose only urea, especially the second top dressing, you can add some potassium chloride. Because the soil is generally deficient in potassium, it appears on the corn as yellowing in the lower part of the later stage. Generally, it is considered to be nitrogen deficiency, which increases the amount of nitrogen supplement, but it is counterproductive.
When topdressing corn, it is customary to spread the urea on the ridge or in the furrow, and then cultivate the soil. The disadvantage of this is that it causes a serious waste of fertilizer and does not serve the purpose of topdressing.
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