What causes yellow leaves in summer corn?
Why does summer corn have yellow leaves? What can be done to remedy it? Please advise. Yellowing corn leaves with no luster are caused by a lack of nitrogen in the corn plant and the soil, or by damage from pests and diseases. Long-term yellowing of corn leaves often causes reproductive growth to advance, heading too early, resulting in bald tips, and the corn plants developing "pre...
Why does summer corn have yellow leaves? What can be done to remedy it? Please advise.
Yellowing corn leaves with no luster are caused by a lack of nitrogen in the corn plant and the soil, or by damage from pests and diseases. Long-term yellowing of corn leaves often causes reproductive growth to advance, heading too early, resulting in bald tips, and the corn plants developing "premature aging", that is, the corn plants age and mature too early, resulting in low yield. The measures for controlling yellow leaves in corn are as follows:
Heavy application of fertilizer and water: manage yellow-leaf corn with the "five-stage topdressing method", that is, topdressing seedling fertilizer, small trumpet-stage fertilizer, large trumpet-stage fertilizer, ear fertilizer, and grain fertilizer, applying fertilizer in small amounts many times to improve fertilizer efficiency. At the seedling stage, apply 10 kg of urea and 5 kg of potassium sulfate per mu; at the small trumpet stage, apply 15 kg of diammonium phosphate, 10 kg of potassium sulfate, and 2 kg of complete-element micro-fertilizer per mu; at the large trumpet stage, apply 25 kg of diammonium phosphate, 15 kg of potassium sulfate, and 3 kg of complete-element micro-fertilizer per mu; at the ear stage, apply 10 kg of diammonium phosphate and 5 kg of potassium sulfate per mu; at the grain stage, apply 2 kg of diammonium phosphate and 3 kg of potassium sulfate per mu. If it does not rain after fertilization, be sure to water 3-5 days after fertilizing, using water to regulate fertilizer and using water to promote fertilizer.
Prevent diseases early and skillfully control insects: apply pesticide early according to the occurrence characteristics of the diseases and insects that cause yellow leaves, so as to eliminate the disease (insects) as soon as the pesticide is applied and leave no future trouble.
Click to get more corn planting techniques
Click to get more food crop planting techniques