Symptoms of white corn seedlings showed that from the 4 leaf stage, the leaf color at the base of the new leaf became yellowish-white; at the 5-6 leaf stage, the light yellow and light green stripes appeared between the 1st leaf and the 3rd leaf, but the veins Still green, the purple stripes appear at the base; after 10 to 15 days, the purple color gradually turns yellowish-white, and the leaves are thin and white, and when severe, the whole field is white. After the onset of the disease, the growth and development of the corn is not only retarded, the plants are short, and there are many empty stalks in the future. The ear lacks grain baldness and seriously affects the yield.
As a preventive measure, the most effective method is zinc supplementation. On the one hand, base fertilizers are added, mainly organic fertilizers, supplemented by chemical fertilizers, and organic fertilizers must be decomposed to carry out pollution-free treatment. About 2,500 kilograms of high-quality organic fertilizer is applied per acre, and about 1.5 kilograms of zinc sulfate is mixed with organic fertilizer, and soil preparation is applied to the soil. On the other hand, scientific topdressing is mainly top dressing, which is a good way to find zinc supplements after white seedlings. Per acre spraying concentration of 0.1% to 0.2% zinc sulfate solution 40 to 50 kg, starting from the time of corn jointing, spray once every 10 to 15 days, and even spray 2 to 3 times.
For the most common waxy and sweet corn on the market, waxy corn has a higher nutrient content than regular corn, containing 70-75% starch (and almost all straight-chain starch), more than 10% protein, 4-5% fat and 2% multivitamins, with more grains, VA, VB1 and VB2 in protein than rice, with the highest fat and VB2 content. Yellow maize also contains carotenoids, such as rice and wheat. The molecular weight of waxy maize starch is more than 10 times smaller than that of ordinary maize, and the starch makes glutinous rice sticky and soft, softer than ordinary hard maize. It is more than 20% more digestible to eat than regular maize and it is suitable for people with less than perfect teeth. At the same time, it is not suitable for diabetics because of the very high content of straight-chain starch (a polysaccharide).
Waxy maize is also known as sticky maize. The grain has coarse, waxy endosperm, similar to shiny, glassy (clear) grains such as hard and dent maize. Its chemical and physical characteristics are controlled by a recessive gene, which is located on chromosome 9. 100% of the starch in the endosperm is straight-chain starch.
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