Pay attention to the prevention and control of cucumber diseases during the rainy season

Affected by rainy season rainfall, bacterial round spot disease and disease on cucumber occurred more seriously. The disease occurs quickly, and it is widespread and difficult to prevent.

First, the symptoms

(1) Cucumber bacterial round spot disease

In the initial infection period, the reverse side of the leaves has a wet-like round spot, and there are oily yellow protruding spots on the front side, and some plots are mixed with angular spot disease. Generally occurs from the lower leaves to the upper leaves.

(2) Cucumber disease

The leaf lesions were dark green water-immersed round lesions at the beginning, with a large gradient. The lesions were cyan at the beginning of dryness, and were light brown and transparent at the end of dryness.

Second, prevention and treatment methods

The control of the disease can be controlled by 57% enoyl-propenyl zinc 7500 times solution or 72% cream urea manganese zinc (Kingling TM ) 500 times solution; 20% leaf cumin 500 times solution or 47% can be used to control bacterial round spot disease Copper hydroxide 600 times liquid control. As it is currently in the rainy season, we should seize the opportunity of cloudy and sunny to prevent and control, but also pay attention to the uniformity of the fight.