Symptoms: Phosphorus deficiency in corn seedlings, even if sufficient phosphorus is supplied later, it is difficult to compensate for the adverse effects of early phosphorus deficiency. When phosphorus deficiency occurs at seedling stage, root development is poor and corn seedlings grow slowly. After 5 leaf stage, symptoms of deficiency of phosphorus were observed. The leaves were purple-red, purple-leafed, and leaf-edge curled. This was due to the destruction of carbon metabolism in the absence of phosphorus, and the accumulation of sugar in the leaves, resulting in the formation of anthocyanins. However, this symptom on the leaf may also be caused by pests, cold damage and phlegm, so a comprehensive analysis is required. Phosphorus deficiency also slows the extraction of filaments, affects pollination, and the ear is curled, the ears are not aligned, the seeds are not full, the baldness phenomenon occurs, and the maturity is delayed.
Control technology: After the symptoms of phosphorus deficiency are found, it can be sprayed with 30 kg of water per acre with 200 g of potassium dihydrogen phosphate or sprayed with 1% superphosphate solution.
Huaxian County Plant Protection Station
Control technology: After the symptoms of phosphorus deficiency are found, it can be sprayed with 30 kg of water per acre with 200 g of potassium dihydrogen phosphate or sprayed with 1% superphosphate solution.
Huaxian County Plant Protection Station
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