Detailed Guide to Identifying Nutrient Deficiency Symptoms in Corn
In recent years, the occurrence range of the corn root mealybug has continued to expand, and the severity of outbreaks has increased year by year, posing a serious threat to corn production and making it a major pest constraining corn yields. The corn root mealybug belongs to the order Homoptera, family Pseudococcidae. In Hebei, this insect produces 3 generations per year, with the second generation (mid-June to early-to-mid August) causing damage...
Nitrogen deficiency: Lower leaves turn yellow in a "V" shape, leaf tips witherPhosphorus deficiency: Plants are stunted, stems and leaves turn purplish-red, and in severe cases the tips of old leaves wither. Ears are deformed, seed-setting rate is low, and maturity is delayed
Potassium deficiency: Lower leaf tips and margins turn yellow, old leaves wither, internodes shorten, and growth is delayed
Boron deficiency: The cob axis is short and small, ears are deformed, and kernels are uneven and sparse
Calcium deficiency: Leaf margins show white streaks with jagged transverse cracking, top leaves roll into a tube and bend downward in an arch shape, and adjacent leaves stick together
Zinc deficiency: White seedling, also known as mosaic stripe disease
Iron deficiency: Interveinal chlorosis of leaves, appearing as striped mosaic