What is the reason for the ash on the leaves of eggplant?

There are several possible causes of ash on the foliage of eggplant, the main ones may be the following:

1.*Botrytis is a fungus-induced disease that mainly affects the leaves, petals and stems of the eggplant. Symptoms include a moist area covered with a gray mold layer, and in severe cases, the diseased area will gradually rot and emit an unpleasant odor, and even cause the plant to die.

This disease is more likely to occur in environments with high temperatures, high humidity, and poor ventilation.

2.Brown streak disease is a fungus-caused disease that also causes gray lesions on the leaves, stems and fruits of eggplants.

3.Eggplant cotton blight is another disease caused by fungi whose symptoms include the formation of gray lesions on the fruits, stems, and leaves of eggplants.

4.Brown spot disease is also a fungal disease that can cause gray lesions on the leaves of eggplants.

In order to effectively prevent and ** these diseases, you can use 50% iprodione 800 times + 40% pyrimethium or 50% pythium 1000 times in the early flowering stage of eggplant**, spray once every 7 days, 3-4 times in a row. At the same time, the fruit branches and leaves with serious lesions should be removed and burned in time, and organic fertilizers and phosphorus and potassium fertilizers should be increased at the same time to control the use of nitrogen fertilizers to reduce the occurrence of diseases.

If the situation is serious or you cannot determine the exact cause, it is recommended to contact a professional agricultural personnel or plant doctor for diagnosis and guidance, so as to effectively control the disease.

Summary. Hello dear, this symptom eggplant gray mold; It can occur at both seedling and adult stages. When the seedlings are infected, the tip of the cotyledons dies, and then the pathogen expands on the young stem, so that the young stem shrinks and becomes thinner, and often breaks off and dies from the diseased part.

The onset of the disease at the adult stage mostly begins with the withered petals, and the gray mildew spots are generated on the petals, and then invades the young fruits, causing the young fruits to rot, and the fruit is infected with the disease, and the local water-soaked brown lesions are produced around the pedicles, which are gradually depressed and decayed.

Hello dear, this symptom eggplant gray mold; It can occur at both seedling and adult stages. When the seedlings are infected, the tip of the cotyledons dies, and then the pathogen expands on the young stem, so that the young stem shrinks and becomes thinner, and often breaks off and dies from the diseased part. The onset of the disease at the adult stage mostly begins with the withered petals, and the gray mildew spots are generated on the petals, and then invades the young fruits, causing the young fruits to rot, and the fruit is infected with the disease, and the local water-soaked brown lesions are produced around the pedicles, which are gradually depressed and decayed.

Solution to eggplant gray mold: Spray control can be alternately sprayed with soft water (agricultural water quality optimizer) + pyrimemycoamine or iprodione or pythium or acetimid. Eggplant gray mold, it is recommended to ventilate and drain moisture, and take the diseased leaves and fruits out of the field.

It can be sprayed with acemidiamine, pyrimecyclamine, fluridin, iprodione, Trichoderma, pyrimelamide, pythium and other drugs for control.

Generate**:

White spots appear on eggplants, and the American spotted loon is more harmful. Its larvae feed in the leaves, which will cause the leaves to form white spots and produce irregular snake-shaped white insect channels, which are irregular linear stretches at the beginning of the occurrence, and the end of the insect channels is often significantly widened. The chlorophyll of the affected leaves is destroyed, affecting photosynthesis, and the heavily damaged ones can fall off, causing damage to flower buds and fruits.

Prevention and control measures: 1. Organic fertilizers such as sheep manure must be completely decomposed as base fertilizer;

2. It is not advisable to apply too much nitrogen fertilizer at one time at low temperature in winter;

3. Prevent wind at noon on a sunny day to discharge toxic gases from the greenhouse;

4. Spray a broad-spectrum fungicide + brassinin to prevent bacterial infection and enhance the disease resistance of eggplant.

In the process of eggplant growth and development, if it is found that the leaf color becomes lighter, the old leaves are yellowed, dry and fall off, the flower buds stop developing and turn yellow, and the heart leaves become smaller, which is a manifestation of eggplant nitrogen deficiency, and prevention and control measures should be taken in time: apply foot fertilizer when preparing the land, and spray "new high fat film" protective fertilizer. At the same time, it is necessary to apply more high-quality farm fertilizer, and in the early stage of nitrogen deficiency, it should be timely applied with fast-acting nitrogen fertilizers such as urea and ammonium carbonate, and cooperate with the "spraying of new high-fat film" to form a protective film to improve the utilization rate of active ingredients in fertilizer.

Avoid water accumulation in the field during the growth period of eggplant, watering, top dressing, cultivating and weeding in a timely manner according to the demand, and spray "vegetable and fruit Zhuang Tiling" at the flowering stage, young fruit stage and expansion stage to increase the amount of nutrient delivery, coordinate the nutritional balance, improve the disease resistance of eggplant, and make the eggplant produce abundantly.

Eggplant leaves are whitish-gray, which is caused by powdery mildew of individual eggplant, and can be treated with etherstrobin, or benzo. Etherstrobin, or ethylpyrimol, or pyrazole naphthamide. Azoxystrobin, or nifebrostrobin, or tetrafluranazole and other agents are sprayed for prevention and control.

Use alternately, or choose two ingredients with different mechanisms and spray foliar fertilizer together**, once every 5-7 days, and spray twice in a row. Alternate ingredients to use.

According to the local resistance and drug level, the ingredients can be selected for prevention and control, and new ingredients or ingredients that are not commonly used can be selected for prevention and control as much as possible.

Pyrazole naphthamide. Azoxystrobin or nifedomrobin. If the economic effect is good, you can try it, the effect is good, you can choose according to the level of medication, the ingredients are relatively new, and the prevention and control effect is prominent.

Eggplant pseudo-black spot disease.

It mainly harms leaves and fruits, mostly in the late growth stage, and the leaves produce irregular round spots, and there is a black mold layer on the surface in the later stage.

The fruit is susceptible to form round or oval black spots, and the slightly concave fruit turns brown and dry rot. Late harvest fruits are often visible.

Prevention and control, reasonable planting, found diseased plants can be evenly sprayed with alum, methalene, manganese, zinc, Dasheng, etc.

Due to the production process, content, and hidden ingredients of pesticide companies, please go to the local distributor to seek the ideal insecticide and better solution according to the condition.