Prevention and treatment of black spot of jujube anthracnose

Due to the continuous rainy weather in recent days, anthrax and black spot disease have occurred in some of the date gardens, prompting timely prevention and treatment of the date farmers.

Anthracnose mainly damages the fruit and forms brown to dark brown depressed spots on the fruit, round or nearly round, with black spots on the surface of the later lesions, and pale pink mucus on the surface when wet. The disease is easy to fall off early. The early and late severity and severity of fruit infestation are determined by the duration of rainfall, the duration of rain and high humidity, and the early rainfall, heavy rainfall, and long duration of high-humidity environment. Diseases occur early and are heavy.

Black spot disease mainly damages the fruit and it is heavier to suffer from winter jujube. Its main feature is the formation of black lesions on the fruit surface, the lesion can be divided into red-brown, gray-brown, dry rot, scab-type four types of symptoms. From the young fruit (fruit size like bean size) to the white back period can infect the hazard. Severe diseases occur in rainy and humid environments. Severe jujube diseases occur in the population of green-clear locusts, and there are many diseases on weak trees.

Control agents: 30% carbendazim suspension 800 times, 22.7% suspension of dicyandiamide 1500 times, 20% suspension of carbendazim carbendazim 1500 times, 70% thiophanate-methyl Wet powder 1000~1200 times, 80% mancozeb (Taisheng) WP 800~1000

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