The latest symptom of element deficiency in grape and its solution

Grape growth requires a variety of nutrients, once the lack of a certain growth element, will affect its growth, resulting in a decline in yield and quality, serious will lead to the death of the whole plant. The following editor will introduce the common symptoms and solutions of grape deficiency.

1. Nitrogen deficiency

When the grape is nitrogen deficient, the leaves are yellowed, the leaves are small and thin, the new shoots grow slowly, the branches are thin and weak, the stem nodes are short, the ears are loose and the yield is low. Nitrogen deficiency can improve timely topdressing available nitrogen fertilizer to maintain nitrogen elements, but also through foliar spraying, generally with 0.5% urea solution for foliar spraying, the effect is better.

2. Phosphorus deficiency

When the grape is deficient in phosphorus, the leaves will bend, there will be purplish red spots, the branches will grow moist, the leaves will fall off early, and the phenomenon of flower and fruit drop is more serious. It is found that phosphorus deficiency should be carried out by foliar spraying with 0.2% calcium superphosphate leaching solution or 0.2% potassium dihydrogen phosphate solution in time, which can quickly cause phosphorus deficiency in environmental plants.

3. Potassium deficiency

Grape potassium deficiency, leaf edges and veins will lose green yellowing, gradually become yellowish brown patches, severe leaf edge will appear scorched, branches crisp and a section, less fruit, higher acidity. Potassium deficiency can be used to apply plant ash or spray 0.2% potassium dihydrogen phosphate solution, the effect is better.

4. Calcium deficiency

Needle-sized spots appeared on the leaf edge during calcium deficiency, the phenomenon of flower and fruit drop was more serious in the early stage, the fruit epidermis was thin, and fruit cracking was easy to occur in the later stage. For calcium deficiency of plants, appropriate amount of calcium superphosphate can be mixed when base fertilizer is applied to maintain calcium fertilizer, and low concentration of superphosphate solution can be sprayed during calcium deficiency in the growing period.

5. Boron deficiency

When boron deficiency, the new shoot is thin and weak, the stem node becomes shorter, the top dies, the leaves near the inflorescence will appear irregular yellow spots, which are easy to fall off, the leaves are small and deformed, the reddish-brown Corolla is easy to fall off after flowering, and the fruit setting rate is low. When boron deficiency is found in plants at flowering stage, 0.2% borax solution can be sprayed.

6. Zinc deficiency

Grape zinc deficiency is that the internodes of the new shoots are shortened, the leaves become smaller, the leaves appear spotted chlorosis, and sometimes the ears are sparse and the fruit grains are irregular. When zinc deficiency is found before flowering, 0.1%-0.2% zinc sulfate solution can be sprayed, which can quickly maintain zinc and make it blossom and set fruit normally.

The above is the introduction of grape deficiency symptoms and solutions, hope to help you, want to know more related knowledge, please follow us.