What are the causes of yellowing eggplant leaves and the solutions

Eggplant is a fruit and vegetable we commonly eat in daily life, and its planting area is vast. During the growing process, some people find that eggplant leaves turn yellow, which not only seriously affects the photosynthesis of eggplant but also reduces the yield and quality of eggplant. So what should you do when eggplant leaves turn yellow? What causes it?

1. Causes of yellowing eggplant leaves

1. Fertilizer damage

Fertilizer damage usually occurs on cloudy days or when the weather turns clear. Farmers use large amounts of farmyard manure that has not been thoroughly decomposed. Improper fertilizer use causes a large amount of ammonia gas to be produced in the field. When the amount of ammonia gas is excessive, it affects the growth of eggplant. If ventilation is not carried out in time, it may cause ammonia poisoning in eggplant.

2. Pesticide damage

When applying pesticides to eggplant, the type and dosage of pesticide should be controlled according to the problems occurring in the eggplant, the weather and the growth condition of the eggplant. Special attention should be paid to the use of pesticides such as Shijiale. Although the control effect is good, attention should be paid to the concentration and timing of use. It should not be used in the morning or evening, because during these two periods the stomata of eggplant plants open and close less, and the pesticide effect will be somewhat inhibited. In addition, use in the evening increases humidity and increases the incidence of disease.

3. Lack of nutrients

The growth of eggplant has a relatively large demand for nutrients. During planting, the nutrient requirements of eggplant must be met. If nutrients are insufficient or a certain nutrient is lacking, eggplant will show various deficiency symptoms. Among them, magnesium deficiency and iron deficiency are the main causes of yellow leaves in eggplant, and some other trace elements can also cause eggplant leaves to turn yellow.

2. What to do when eggplant leaves turn yellow

1. Water in time to flush out fertilizer

After fertilizer damage occurs, water in time to flush out fertilizer, restore the physiological functions of the plants, control the temperature inside the planting shed well, and appropriately spray foliar fertilizer. An appropriate amount of monopotassium phosphate can be added to the foliar fertilizer. If root burn occurs, appropriately spray rooting agent to promote the growth of new roots. When topdressing, farmyard manure must be fully decomposed, and a single fertilizer must not be overapplied or applied alone.

2. Spray foliar fertilizer in time to relieve pesticide damage

After pesticide damage occurs, spray foliar fertilizer in time to relieve the pesticide damage. If it is discovered early, clear water can be sprayed on the leaves to alleviate the pesticide damage. Pesticide use should be controlled according to the growth condition of the plants and various factors. Special attention should be paid to the concentration of the pesticide. Pesticide concentration is the main cause of yellowing eggplant leaves. After pesticide damage occurs, the temperature inside the shed can be appropriately raised to protect the roots of eggplant plants.

3. Supplement nutrients in time

When eggplant shows yellow leaves due to nutrient deficiency, there will be different yellowing symptoms. For example, when magnesium is deficient, the leaves in the middle and lower parts of the eggplant plant begin to turn yellow and gradually develop upward, while when iron is deficient, the young leaves at the top of the plant begin to turn yellow. Generally, soil that is too acidic or too fertile or too wet can cause iron deficiency. Therefore, yellow leaves caused by nutrient deficiency should be supplemented according to the specific element that is lacking.

The above is Tuliu.com's introduction to the causes of yellowing eggplant leaves and the control methods. Yellowing eggplant leaves should mainly be prevented. Management should be strengthened during the planting process to avoid unnecessary losses caused by yellowing eggplant leaves.