Fusarium oxysporum fruit rot of Hami melon

Fusarium fruit rot of Hami melon, also known as white mildew, is an important disease on Hami melon, which mostly occurs during storage and transportation, and Hami melon and Bailan melon are vulnerable. The symptoms are mainly harmful to the fruit. At the beginning of the fruit stalk produced a round slightly sunken light brown spot, the size of 10-30mm, waterlogged around, some slightly cracked, the crack produced white velvet mycelium, sometimes pink, sometimes produced orange-red slime particles, that is, the conidia of the bacteria. The serious flesh of the disease is spongy, sweet and then purplish red, and the flesh is bitter and cannot be eaten. The characteristics of the disease are that Fusarium oxysporum widely exists in the soil and air, and saprophytic life. When the conditions are suitable, it can invade from the wound, and then produce conidia for re-infection. Control methods (1) breeding and planting disease-resistant varieties according to local conditions. (2) strengthen cultivation management. Timely harvest, not too late, do everything possible to reduce various wounds; control temperature and humidity during storage and transportation, cantaloupe 3-9 ℃, Bailan melon 5-8 ℃, relative humidity should not exceed 85%, and pay attention to ventilation and dampness. (3) Pesticide control. Spray more than 60% carbendazim hydrochloride (Fangmaibao) soluble powder 700 times or 50% carbendazim sulfonate (carbendazim) 800 times wettable powder at the initial stage of the disease. Commonly used agents Fangmaibao, carbendazim.