Tomatoes with high Mn-deficient yields consume more manganese from the soil in one season, which can easily lead to 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.
The lack of manganese in the leaves of the cucumber leaves is yellow, making the veins green, as seen on the map, the general green veins everywhere. 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.
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