Wheat deficiency symptoms and correction
Nitrogen Deficiency Symptoms and Corrective Techniques When plants are deficient in nitrogen, the plants are slender, upright and leaves are scarce, and the color is yellow until dry or dead. Purple green stems, few tillers, small ears, small grains. Wheat nitrogen deficiency can be topdressed with urea. In the returning green period, 10 kg of seedlings can be collected. After top-dressing and booting, attention should be paid to timely and appropriate top-dressing attack. Or timely spraying 2% urea solution twice, each time interval of 7 days, and immediately followed by 20 kg of ammonium bicarbonate or urea 7 kg to 8 kg per acre.
Phosphorus deficiency symptoms and corrective techniques When wheat is deficient in phosphorus, the leaves are green and purplish, with slow growth and very few tillers. Stem dwarfs are slender, heading and maturity are delayed, and spikelets are small. After the symptoms of phosphorus deficiency were found in wheat, 200 grams of potassium dihydrogen phosphate could be used to spray 30 kilograms of water on leaves.
Symptoms of potassium deficiency and corrective techniques When wheat is deficient in potassium, the leaves are blue-green, and the leaves are soft and curly. The tips and edges of the old leaves turn yellow so that they are dry and burnt. The stalks are weak, dwarf, short in internodes, less in spikes, and easy to lodging. After the wheat has been found to have potassium deficiency symptoms, it usually applies 10 kg of potassium sulphate as a base fertilizer or a combination of top dressing at the seedling stage or foliar spraying with 1% potassium chloride aqueous solution or 0.2% potassium dihydrogen phosphate aqueous solution, or in the rhizosphere Apply potassium sulfate 5-7 kg per mu.
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