The new nitrogen-deficient shoots are fine and short, the leaves are small and erect, the color is grayish green, the petiole, the veins and the surface layer turn red; the flowers are small, the fruit is precocious, it is easy to fall off, the roots are not well developed, the fine roots are many, the roots are small, the new roots Yellowing.
Crops with different phosphorus deficiency have different performances. When corn is deficient in phosphate fertilizer, it will show slow growth during seedling stage. After 5 leaves, the symptoms are more obvious, the leaves are purple, and the seeds are not full. When wheat is deficient in phosphate fertilizer, it shows that the seedlings grow slowly, the roots are poorly developed, the tillers are reduced, the base of the stems is purple, the leaves are dark green, slightly purple, and the ears are small.
In the initial stage of potassium deficiency, the tip of the lower blade turns yellow, and gradually becomes yellow along the edge of the leaf, but the veins on both sides and the midrib of the vein remain green. In severe cases, it will gradually develop upward from the lower leaves, and finally the majority of the leaves will be yellow and the edges of the leaves will be burnt. Cereal crops will result in weaker tillering, shorter internodes, weak leaves, and soft and easy stalks. Dicotyledons cause the leaves to curl, gradually shrink, and sometimes the leaves are broken, but the middle of the leaves remains green. Root crops can cause root weight to drop and poor quality.
Source: Farmers Daily Author: Juan leaves
Crops with different phosphorus deficiency have different performances. When corn is deficient in phosphate fertilizer, it will show slow growth during seedling stage. After 5 leaves, the symptoms are more obvious, the leaves are purple, and the seeds are not full. When wheat is deficient in phosphate fertilizer, it shows that the seedlings grow slowly, the roots are poorly developed, the tillers are reduced, the base of the stems is purple, the leaves are dark green, slightly purple, and the ears are small.
In the initial stage of potassium deficiency, the tip of the lower blade turns yellow, and gradually becomes yellow along the edge of the leaf, but the veins on both sides and the midrib of the vein remain green. In severe cases, it will gradually develop upward from the lower leaves, and finally the majority of the leaves will be yellow and the edges of the leaves will be burnt. Cereal crops will result in weaker tillering, shorter internodes, weak leaves, and soft and easy stalks. Dicotyledons cause the leaves to curl, gradually shrink, and sometimes the leaves are broken, but the middle of the leaves remains green. Root crops can cause root weight to drop and poor quality.
Source: Farmers Daily Author: Juan leaves
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