What are the symptoms of phosphorus deficiency in corn?

Corn in the growth period, if you want to grow well, in addition to good water, but also good fertilizer, if fertilizer is insufficient or uneven, there will be a variety of diseases, what are the symptoms of phosphorus deficiency in corn?

What are the symptoms of phosphorus deficiency in corn?

When maize seedlings were deficient in phosphorus, the stems and leaves were dark green and purplish red, and from the lower leaves, the leaf tip would gradually dry up, and gradually spread to the base, gradually dark brown, and finally spread to the young leaves. From booting to flowering stage, there was phosphorus deficiency, the female ear decreased, the grain was not full, even the ear was empty, and baldness, grain deficiency and irregular grain row appeared at the top of the ear.

Second, what about phosphorus deficiency in corn?

1. Correct diagnosis was made according to the results of plant analysis, soil test and the manifestation of element deficiency.

2. The basic application of mature organic fertilizer and phosphate fertilizer is advocated, and the formula fertilization technology is adopted to supplement the deficient fertilizer to maize according to the amount.

3. When phosphorus deficiency is found, 20 kg / mu of diammonium phosphate can be applied in the early stage, and 0.2-0.5% potassium dihydrogen phosphate solution can be sprayed on the leaves in the later stage. Or spray 1% superphosphate solution.