Tomato deficiency magnesium symptoms: deficiency of the disease first appeared in the middle and lower leaves, in the fruit of the fruiting peak of the fruit near the first leaf occurs, and gradually expanded to the entire plant. The veins between the main veins and veins are green and the leaf margins remain green. In the first greenhouse expansion period, the middle and lower leaves begin to turn yellow from near the main vein and appear chlorosis, which occurs first in the fruit near the fruit's leaf in the prosperous period. In the late post-fertility, the entire leaves except the veins have been yellowed.
Prevention measures: Increase the temperature and apply organic fertilizer. To determine the soil, magnesium should be added to the soil when magnesium is insufficient. The emergency can be used 1-2% magnesium sulfate aqueous solution or dragon light spray laugh 1500 times liquid, sprayed 2-3 times a week.
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