Vegetables need more fertilizer in their lifetime, in addition to applying a sufficient amount of base fertilizer (including farmyard fertilizers), but also according to the growth of vegetables or soil fertility status of fertilizer, what should be missing what is missing. Some farmers may use their own habits, and some farmers may rely on their experience. In fact, the simple but more accurate method is to distinguish from the plants, so as to be clear at a glance.
The lack of nitrogen fertilizer in vegetables, the first leaves showed light green or yellow (a small amount of lack), and soon the same changes were repeated in the stem. Changes in leaf color usually start with the old leaves and then gradually extend to the entire leaf.
Vegetables lack phosphate fertilizers. Initially, it showed slow growth, followed by chlorotic lesions on the leaves. The stems were slender, rich in wood, and the leaves were smaller, the leaves were darker, the back was red-purple, and fruit ripening was delayed.
The lack of potassium in vegetables. The initial plant base had gray-green leaves, followed by bronze and yellow-brown leaves, the leaf margins turning brown, spots along the veins, and tissue rot and death. Stalks are slender, hardened and rich in wood.
The lack of calcium in vegetables shows slow growth and the formation of thick woody stems. The top and young parts of the plants showed obvious symptoms. Tomatoes lack calcium, it is easy to get the umbilical rot, the specific performance of the top of the fruit (umbilical) began to appear brown rot, when severe, the whole fruit rot, sometimes accompanied by black mold. The lack of calcium in cucumber shows that the upper leaves are shriveled and do not stretch. The plant's leading growth is slow, dry and easy to be confused with cucumber's scab. The main difference is that the spot of black spot is easily broken.
The vegetables lack micronutrients. If there is chlorosis between leaves and veins, the top is affected first and the growth is slow, indicating zinc deficiency. If the top growth point dies, the roots are stunted, and the flowering vegetables do not bloom well or bloom abnormally, indicating a lack of boron. If the newborn leaves have begun to lose their green color, they gradually fade into white, indicating that the iron deficiency.
The lack of nitrogen fertilizer in vegetables, the first leaves showed light green or yellow (a small amount of lack), and soon the same changes were repeated in the stem. Changes in leaf color usually start with the old leaves and then gradually extend to the entire leaf.
Vegetables lack phosphate fertilizers. Initially, it showed slow growth, followed by chlorotic lesions on the leaves. The stems were slender, rich in wood, and the leaves were smaller, the leaves were darker, the back was red-purple, and fruit ripening was delayed.
The lack of potassium in vegetables. The initial plant base had gray-green leaves, followed by bronze and yellow-brown leaves, the leaf margins turning brown, spots along the veins, and tissue rot and death. Stalks are slender, hardened and rich in wood.
The lack of calcium in vegetables shows slow growth and the formation of thick woody stems. The top and young parts of the plants showed obvious symptoms. Tomatoes lack calcium, it is easy to get the umbilical rot, the specific performance of the top of the fruit (umbilical) began to appear brown rot, when severe, the whole fruit rot, sometimes accompanied by black mold. The lack of calcium in cucumber shows that the upper leaves are shriveled and do not stretch. The plant's leading growth is slow, dry and easy to be confused with cucumber's scab. The main difference is that the spot of black spot is easily broken.
The vegetables lack micronutrients. If there is chlorosis between leaves and veins, the top is affected first and the growth is slow, indicating zinc deficiency. If the top growth point dies, the roots are stunted, and the flowering vegetables do not bloom well or bloom abnormally, indicating a lack of boron. If the newborn leaves have begun to lose their green color, they gradually fade into white, indicating that the iron deficiency.
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