How to treat eggplant disease

Eggplant is a nutritious vegetable, which is loved by most people, but it is easy to be disturbed by diseases in the process of planting. So, how to treat eggplant disease?

1. Brown streak of eggplant

1. Symptoms of onset

Seedling damage: Brown sunken disease spots appeared at the base of the stem, with dense black grains, and the seedlings were quenched or withered.

Leaf disease: first, there are round water-immersed spots on the lower leaves, and then expand to brown at the edge, gray-white in the middle, and whorled with many small black spots.

Fruit disease: dark brown oval sunken spots on the surface, covered with small black spots arranged in concentric rings, and diseased fruit rot, shedding or dry rot when it is wet.

Stem disease: water-immersed diamond-shaped sunken disease spot, on which scattered small black spots, late epidermis cracking, exposing xylem, easy to break, disease spot around the plant withered.

two。 Prevention and cure method

① implements crop rotation; increase the application of organic fertilizer, potash fertilizer and phosphate fertilizer to increase tree potential; timely drainage, maintain ventilation and ventilation.

After the results, ② was sprayed with 1500 times of hexazolol, or 1500 times of difenoconazole, or 1500 times of prochloraz EC, once every 5 days for 2 or 3 times.

Botrytis cinerea of eggplant

1. Symptoms of onset

Infection at seedling stage: cotyledon apex withered, then spread to young stem, young stem constricted and thinned, broken and withered, true leaf infection appeared semicircle to nearly round light brown ring spot, leaf or stem grew gray mold and rot in later stage.

Infection in the adult stage: the leaf margin first forms a water-immersed spot, and then turns brown, forming a nearly round to irregular or V-shaped light yellow wheel spot, which is densely covered with gray mildew layer; in severe cases, the whole leaf dries up.

Stem and petiole infection: Brown spots are produced and gray mold grows when the humidity is high. Fruit infection: water-immersed brown disease spots occur locally around the pedicel of young fruit, which expand into dark brown, sunken rot, and produce irregular wheel gray mildew on the surface.

two。 Prevention and cure method

① selection of low temperature and low light eggplant varieties; control of temperature and humidity; high ridge planting, reasonable close planting, pay attention to ventilation, pay attention to drainage after rain; increase the application of organic fertilizer, potash fertilizer, phosphate fertilizer, increase tree potential; timely removal of residual branches and diseased fruit, concentrated deep burial or burning.

At the initial stage of the onset of ②, the following agents can be used for prevention and treatment: 50% isobarbazide wettable powder 800x solution, or 25% pyrimethrin suspension 1500 times solution, or 40% pyrimidine suspension 1200 times solution.

Third, eggplant leaf mold

1. Symptoms of onset

Leaf infection: chlorosis spots with inconspicuous edges and gray-green mildew layer on the back of the disease spots, resulting in early shedding of leaves.

Fruit infected: the diseased part is black, leathery, mostly spread downward from the stalk, the fruit shows white patches, mature fruits grow yellow, sunken disease spots, and then gradually turn black, and finally become a stiff fruit.

two。 Prevention and cure method

① selection of disease-resistant varieties, rotation, reasonable close planting, pay attention to ventilation and drainage.

In the early stage of ②, the following agents can be used for prevention and treatment: 25% tebuconazole 1500 times liquid, or 47% Chunlei Wang copper wettable powder 800x liquid spray. Greenhouse available: 45% chlorothalonil smoke remover 250g/ mu closed shed smoking.

The common diseases of eggplant are the above three. To do a good job of protection is the key to put an end to eggplant diseases.