Symptoms of element deficiency in grape and its solution

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

1. Nitrogen deficiency

Grape nitrogen deficiency, leaf yellowing, small and thin leaves, slow growth of new shoots, tendrils thin, short stem nodes, loose ears, low yield. Nitrogen deficiency can improve the timely topdressing of quick-acting nitrogen fertilizer to maintain nitrogen elements, but also through foliar fertilizer, generally with 0.5% urea solution foliar fertilizer, the effect is better.

2. Phosphorus deficiency

Grape phosphorus deficiency, the leaves will bend, but also appear purple spots, slightly wet branches growth, leaves early fall off, flower and fruit drop phenomenon is more serious. If phosphorus deficiency is found, foliar fertilizer should be sprayed with 0.2% calcium superphosphate leaching solution or 0.2% potassium dihydrogen phosphate solution in time, which can quickly eliminate phosphorus deficiency phenomenon of environmental plants.

3. Potassium deficiency

Grape potassium deficiency is, leaf edges and veins will lose green yellowing, gradually become yellow-brown patches, severe leaf edges will appear charred, branches and vines crisp and a section, less fruit, high acidity. Potassium deficiency is available by applying plant ash or spraying 0.2% potassium dihydrogen phosphate solution, the effect is better.

4, calcium deficiency

When calcium deficiency occurs, pin-sized spots appear on leaf edge, flower and fruit drop phenomenon is serious in early stage, fruit epidermis is thin, and fruit cracking phenomenon is easy to occur in late stage. In order to plant calcium deficiency, can be mixed into the base fertilizer when appropriate calcium superphosphate, maintain calcium fertilizer, calcium deficiency in the growth period can spray low concentration of calcium superphosphate solution.

5. Boron deficiency

When boron is deficient, the new shoots are thin and weak, the stem nodes become shorter, the top is dead, the leaves near the inflorescence will appear irregular yellow spots, easy to fall off, the leaves are small and abnormal, the reddish-brown corolla after flowering is easy to fall off, and the fruit setting rate is low. 0.2% borax solution can be sprayed when boron deficiency is found in flowering plants.

6. Zinc deficiency

Grape zinc deficiency is, new shoot internode shortened, leaves become smaller, leaves appear spotted green, sometimes there are sparse clusters, fruit grains are not neat phenomenon. If zinc deficiency is found before flowering, 0.1%~0.2% zinc sulfate solution can be sprayed, which can quickly maintain zinc element and make its flowering and fruiting normal.

The above is an introduction to grape deficiency symptoms and solutions. I hope it can help you. If you want to know more about related knowledge, please pay attention to us.