What should I do if the grape leaves turn yellow?

Grape is a vine, in the planting process will inevitably appear some problems, such as grape leaves yellow is a common phenomenon, then what causes grape leaves yellow? How to solve this problem? Let's take a look at the detailed introduction.

1. Improper watering

Grape water shortage or excessive watering will cause the phenomenon of yellowing or withering leaves, plant water shortage, leaves will naturally become less chlorophyll due to lack of water, leaves will turn yellow, and too much watering, roots absorb too much water, for oxygen transport weakened, will also make leaves yellow.

Solution: grape watering must be appropriate, the amount of watering should be determined according to the weather, summer drought is hot, need to water regularly to supplement water, in the rainy season should not be watered, but also pay attention to drainage measures, so as not to soil water too much.

2. Improper fertilization

In the planting process, if the fertilizer is not properly applied, it will also cause the grape leaves to turn yellow. Excessive fertilization will cause excessive nutrients in the soil, and the plant will cause the leaves to turn yellow if it produces fertilizer damage. However, the fertilizer fruit and nitrogen, phosphorus and potassium nutrients in the soil are guaranteed, and the plant will gradually turn yellow due to insufficient nutrients.

Solution: ordinary fertilizer amount must be controlled well, so that frequent application of light fertilizer, fertilization should not be too frequent, especially in the application of phosphorus and potassium fertilizer, pay attention to appropriate loose soil, so as to make his leaves green and lush.

3. Phytotoxicity

Grape in the growth process will suffer from the maintenance of the disturbance, so many fruit farmers will apply medicine to prevent, but sometimes improper application of medicine will also cause yellow leaves of the plant, this is phytotoxicity, and phytotoxicity caused by a large yellow leaf area, serious will lead to plant death, great harm.

Solution: Pay attention to the method and concentration of the pesticide when spraying. When the phytotoxicity occurs, water and spray the plant, reduce the concentration of the pesticide, increase the light time appropriately, strengthen photosynthesis to alleviate the phytotoxicity, and make it recover.

4. Diseases

When grape plants suffer from leaf spot disease, there will also be yellow leaves phenomenon, leaf spot disease is caused by some fungi and bacteria infection, this disease will make local leaf necrosis, how to gradually spread, in addition to scale insects and red spiders will also cause grape leaves yellow phenomenon.

Solution: When grape leaf spot occurs, it is necessary to spray 50% carbendazim 500 times solution on the whole plant in time, while scale insects and red spiders can be washed with toothbrush dipped in soapy water, and then sprayed with pesticides for control.

The above is the grape leaf yellowing how to do introduction, hope to help you, want to know more related knowledge, please pay attention to us.