With the arrival of the garden season, many gardeners notice that the eggplant leaves turn yellow and do not know what the reason is, how to deal with the scourge of what to do in such cases. Experienced agronomists are advised to initially discover the source of yellowing, only then proceed to the elimination. Detecting a problem is not always easy, so use the information listed below to clearly understand what the true causes may be, and then engage in plant restoration and treatment to preserve the crop.
Understand why eggplant leaves turn yellow
There may be many reasons, consider the most basic:
Yellowing of eggplant leaves may be due to the appearance spider mite on plants. The tick is quite difficult to notice, but with massive clusters, black dots on the reverse side of the leaves will be clearly visible. The initial stage of the lesion can and not be noticed, as a rule, it becomes visible when the leaves turn yellow, wither and fall. Unfortunately, with a massive defeat all the leaves may fall off, the plant will die. The tick actively develops in dry and hot conditions, so the cultivation of eggplant seedlings is often accompanied by unpleasant visits of harmful insects.
If the spider mite is not found, remember what food was given to eggplants or not fed. Lack of nutrients can cause yellowing of leaves not only of adult plants, but also seedlings. As a rule, when there is a shortage of nutrients, the lower two leaves first turn yellow (the root system begins to take food from the green part), then gradually the rest. Such a phenomenon can often be observed after transplanting eggplant in a greenhouse or open ground after a few days. Adult plants may also lack elements, causing the leaves to turn yellow and fade. Along with this, other signs may appear – flowers, buds, ovaries fall off
Fusarium wilt – the fungus penetrates through the roots, affecting the vascular system of the plant, as a result, the lower two leaves turn yellow, then fade and crumble. Over time, the rest of the shoots fade, eggplant dies. If you cut the stem of the affected plant, in the lower part you can see the brown vascular ring well. If the weather is wet, then spores of the fungus can be seen on the root collar on a pink patina
When it is a week of overcast weather with rains, the probability of yellowing of the leaves of eggplant growing in open ground is very high. Yes, and blue in the greenhouse from the cloudy weather will not feel better. The lack of sunlight, exactly like an overabundance, leads to the appearance of yellow foliage.
Wrong watering the eggplant when water gets on the lower leaves may be one of the possible reasons. Accumulating on the leaves, the water is heated by sunlight, there may be burns, and in cool and rainy weather – not rarely leads to the appearance of fungal and putrid diseases. Pests that live in the soil, can eat up the roots of plants, and the tops of the plant begin to turn yellow.
Ways to troubleshoot and prevent
When a spider mite is found on eggplants, the struggle must begin immediately, otherwise you will lose not only part of the crop, but also the plants themselves. Rapidly breeding in suitable conditions, the tick actively multiplies and causes great damage to plants. There are a lot of means of dealing with it; it’s up to you to choose.
From folk remedies it is recommended to use onion peel or garlic infusion. Experienced gardeners alternate spraying onion with garlic every 8-10 days to achieve the best result:
- 100 grams of onion peels pour five liters of hot water (+47 ° … + 50 ° C) and insist for 4-5 days in a warm place. Strain the resulting solution and sprinkle eggplants every 7-8 days.
- two large heads of garlic need to chop a knife well and pour one liter of water, let it brew for 5 days. The resulting infusion is diluted with warm water in a ratio of 1: 1 and spray solanaceous.
Among the drugs you can use Aktellik, Konfidor, Fitoverm, Sunmite, Neoron (dilute and use strictly according to the instructions specified by the manufacturer).
Provide eggplants with potash and phosphate nutrition throughout the entire growing season, since the elements are necessary for plants for the normal functioning of the root system, the development and growth of the stems, the formation of ovaries. During flowering and fruiting, you can use the following composition so that the leaves do not turn yellow – take 1 tbsp. potassium salt and superphosphate, dilute in a bucket of warm water and feed solanaceous, using 0.5 liters of ready-made feeding under each bush.
It is worth noting, potash nutrition increases eggplant resistance to fungal diseases, infections, makes it more stable and strong. Phosphorus contributes to the development of a strong root system, and also accelerates the ripening and growth of fruits.
In order to avoid fusarium disease, pre-sowing treatment of seeds, crop rotation (do not plant eggplants after tomatoes, peppers and blue ones), soil disinfection, as well as working inventory are necessary. With the mass spread of infection, use drugs – Fundazol, Benazol. Of the biological agents, the drug Trichodermin, which is applied directly to the soil, has proven itself well.
Growing an eggplant in a greenhouse or in the open field also requires adhering to cultivation technology in order to grow healthy and strong plants that give a rich harvest. Failure to comply with growing conditions very often leads not only to yellowing of the leaves, but also a shortage of fruits.