The yield of tomato is high, and the consumption of soil manganese in one season is more likely to cause deficiency of manganese. If tomato lacks chlorophyll synthesis, growth and development are affected. First, the stems and leaves turn into light green, and then gradually yellow, veins remain green, yellow leaves between the main veins, so the yellow leaf tissue and green veins on the other, showing a yellow spot. The late yellow gradually expanded until the main vein, all yellow stems and leaves, plants do not flower, infertility bud results.

Once the cucumber is deficient in manganese, the large yellow leaves make the veins green, as seen in the general green veins on the map. After the cucumber lacks manganese, the vines are short, weak, and the flower buds often appear yellow, and the fruits are slender.

The lack of manganese in spinach is first manifested in the chlorosis of new leaves, which is light green at the beginning, and golden yellow afterwards. It can spread to the whole plant within a few days, and white necrotic tissues will gradually appear in the leaves. Leaves often appear curled, shrinkage and necrotic plaques, commonly known as spinach yellowing.

The vegetables are more sensitive to manganese, and manganese fertilizers are sprayed with manganese fertilizer to increase the yield by between 10% and 20%. The concentration of manganese sulfate is about 0.1% to 0.3%. The amount of mu spray depends on the size of the vegetables, 25 kg can be seedling period. When the growth is strong, 50 kg of solution should be sprayed per mu. Both sides of the spray should be sprayed with fertilizer solution. The spraying period should be the best in the seedling stage, and can be sprayed several times when covered with a plastic greenhouse or plastic film. Cucumber, wax gourd, pumpkin, loofah, bitter gourd, and zucchini are used for spraying 1 or 2 times in the early fruit period and full fruit period, except for the seedling stage. Tomatoes, eggplants, peppers, etc. can be sprayed at the seedling stage, fruit-producing stage, and full-fruit stage. Spinach, celery, lettuce, lettuce, leeks, spinach, etc. can be sprayed 1 to 2 times during the seedling and vigorous growth period.

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