MySheen

Symptoms of element deficiency in corn

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, In recent years, the occurrence range of corn sunflower scale has been expanding, and the occurrence degree has increased year by year, which has posed a serious threat to corn production and has become the main pest restricting corn yield. The corn sunflower scale belongs to Homoptera, Coccidae. The insect has 3 generations every year in Hebei Province and is harmful to the second generation (mid-June-early-mid-August).

Nitrogen deficiency: the lower leaf yellowed in the shape of "V", the leaf tip withered and lacked phosphorus: the plant was thin and small, the stem and leaf was purplish red, and the old leaf tip withered in severe cases. Deformed panicle, low seed setting rate, delayed potassium deficiency: yellowing of lower leaf tip, withering of old leaves, shortening of internodes, delayed boron deficiency: short spike axis, deformed ear, irregular grains and sparse calcium deficiency: leaf margin showed white markings and serrated transverse cracking, top leaf reel bent downward arched, connected leaves adhered to zinc deficiency: flower white seedlings, called mosaic stripe iron deficiency: leaf pulse chlorosis. Striped mosaic

 
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