How to do manganese deficiency in vegetables?

The yield of tomato is high, and the consumption of soil manganese is more in one season, which is easy to cause manganese deficiency. If the chlorophyll synthesis of tomato deficiency is blocked, growth and development are affected. First, the stems and leaves first turn pale green, then gradually yellow, the veins remain green, and the main veins turn yellow, so the yellow mesophyll tissue and the green veins appear yellowish. Later, the yellow color gradually expanded until the main vein, the stems and leaves were all yellow, the plants did not bloom, and the infertile buds were the result.

Once the cucumber is deficient in manganese, the leaves are yellow in color, which makes the veins green, as the green veins on the map are visible everywhere. After the manganese deficiency of cucumber, the vine becomes short and thin, the flower bud often appears yellow, and the fruit is slender.

The deficiency of manganese in spinach is first manifested in the chlorosis of the new leaves, which is light green at the beginning, and then golden yellow. It can spread to the whole plant in a few days, and white necrotic tissue will appear in the mesophyll. The leaves often appear curled, shrunken and necrotic plaques, commonly known as spinach yellowing.

Vegetables are more sensitive to manganese. After manganese deficiency, the yield of manganese fertilizer is increased by 10-20%. The concentration of manganese sulfate is about 0.1 to 0.3%, and the amount of spray applied per mu depends on the size of the vegetables. The seedling period can be 25 kg. When the growth is strong, 50 kg of solution should be sprayed per acre. When spraying, the fertilizer should be sprayed on both sides of the leaf. The spraying period should be optimal at the seedling stage, and the plastic greenhouse or the mulch film can be sprayed several times. Cucumber, melon, pumpkin, loofah, bitter gourd, and zucchini can be sprayed 1 or 2 times in the initial fruit and fruit stage except for the seedling stage. Tomatoes, eggplants, and peppers can be sprayed at the seedling stage, during the fruiting stage, and during the fruiting stage. Spinach, celery, lettuce, lettuce, leeks, spinach, etc. can be sprayed 1 or 2 times in the seedling stage and vigorous growth period.

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