The main symptoms of nitrogen deficiency in maize, corn plants grow slowly, the leaves are narrow, the stems are slender, the leaf color becomes yellowish green, and the lower leaves are prematurely aging. In the absence of nitrogen, the old leaves first express symptoms and then develop into the tender leaves of the plants. The appearance of this symptom can be used as an indicator of nitrogen deficiency, and appropriate application of nitrogen fertilizer according to soil fertility is an effective stimulation measure.
The main symptoms of phosphorus deficiency in maize: seedling growth is slow and dwarfed, root development is poor, leaves are not stretched, stems are weak, stems and leaves are dark green and purple, leaves are dry and dark brown, from leaf tip along leaf margin The sheath is dark green and purple. Purple is due to the inhibition of sugar metabolism in corn plants, accumulation of sugar in the leaves, promote the formation of anthocyanins, make the plants purple. Phosphorus deficiency from booting to flowering, sugar metabolism and protein synthesis are blocked, and ear differentiation is poorly developed. The top of the ear is contracted, even the empty ear, and the filament is delayed, which is prone to baldness, lack of grain and irregular grain, and curved ears.
The main symptoms of potassium deficiency in corn: Potassium fertilizer can promote the growth of thick-walled cells in the epidermis of corn stems, forming a good mechanical structure, making the stems tough and improving the resistance to lodging. Potassium fertilizer can reduce the protoplasmicity of cells, enhance the water retention capacity of cells, and improve drought resistance. Potassium deficiency in corn, the seedlings develop slowly, the leaves are light green and have green stripes. Potassium in the old leaves is transferred to the new tissue, and the tip and edge of the leaves are necrotic and appear to be burnt. But the midrib of the leaf remains green. If there is a serious lack of potassium. Plant growth is short, internode shortening, ear development is poor, the tip is particularly sharp, the bald top is severe, the starch content of the grain is reduced, and the 1000-grain weight is reduced. Inhibition of nutrients transported to the roots, causing poor root development, premature aging, and susceptible to stem rot or down.
The main symptom of zinc deficiency in maize: zinc deficiency has pale yellow stripes on both sides of the early midrib of the corn, while the midrib and edge of the leaves remain green. If zinc deficiency continues, the streaked part may be necrotic, forming a wide fading zone. The whole plant of the corn turns pale green, the growth is delayed, and it may die prematurely. Zinc can affect the synthesis of auxin in corn plants. Zinc can catalyze the photochemical reaction of chlorophyll, and zinc deficiency can cause chlorosis. Zinc is also an activator of some enzymes and has an important relationship with protein synthesis.
The main symptoms of phosphorus deficiency in maize: seedling growth is slow and dwarfed, root development is poor, leaves are not stretched, stems are weak, stems and leaves are dark green and purple, leaves are dry and dark brown, from leaf tip along leaf margin The sheath is dark green and purple. Purple is due to the inhibition of sugar metabolism in corn plants, accumulation of sugar in the leaves, promote the formation of anthocyanins, make the plants purple. Phosphorus deficiency from booting to flowering, sugar metabolism and protein synthesis are blocked, and ear differentiation is poorly developed. The top of the ear is contracted, even the empty ear, and the filament is delayed, which is prone to baldness, lack of grain and irregular grain, and curved ears.
The main symptoms of potassium deficiency in corn: Potassium fertilizer can promote the growth of thick-walled cells in the epidermis of corn stems, forming a good mechanical structure, making the stems tough and improving the resistance to lodging. Potassium fertilizer can reduce the protoplasmicity of cells, enhance the water retention capacity of cells, and improve drought resistance. Potassium deficiency in corn, the seedlings develop slowly, the leaves are light green and have green stripes. Potassium in the old leaves is transferred to the new tissue, and the tip and edge of the leaves are necrotic and appear to be burnt. But the midrib of the leaf remains green. If there is a serious lack of potassium. Plant growth is short, internode shortening, ear development is poor, the tip is particularly sharp, the bald top is severe, the starch content of the grain is reduced, and the 1000-grain weight is reduced. Inhibition of nutrients transported to the roots, causing poor root development, premature aging, and susceptible to stem rot or down.
The main symptom of zinc deficiency in maize: zinc deficiency has pale yellow stripes on both sides of the early midrib of the corn, while the midrib and edge of the leaves remain green. If zinc deficiency continues, the streaked part may be necrotic, forming a wide fading zone. The whole plant of the corn turns pale green, the growth is delayed, and it may die prematurely. Zinc can affect the synthesis of auxin in corn plants. Zinc can catalyze the photochemical reaction of chlorophyll, and zinc deficiency can cause chlorosis. Zinc is also an activator of some enzymes and has an important relationship with protein synthesis.
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