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　　 Gourd blight is a fungal disease, and the leaves, stems and vines of the gourd can be infected. On the leaves, the initial irrigated chlorotic spots, along the veins, turned yellowish brown, the edges of the lesions were dark brown, the center became shallow, and there were countless small black spots, that is, the conidia of the pathogen. The lesions on the vine and petiole are long fusiform, which can heal each other into pieces, which causes the petiole to become thinner and easily broken. The lesion is covered with small black-like fruit bodies. In the middle stage of the growth of the gourd fruit, it is the most serious disease when it is made into various models, especially the enlargement of the fruit or the accumulation of water in the pedicle. The disease is large and the surface is covered with round black spots. Affect the shape.
Control method:
1 In the early stage of the disease, 50% compound carbendazim suspension 500 times solution was sprayed with roots, or 70% mancozeb 700 times solution was sprayed.
2 eradicate weeds and control aphids. Can be used to kill nail 毙 (21% synergistic cyanide, horse emulsifiable concentrate) 6000 times solution, or 40% fenvalerate 6000 times solution, or 20% chlorpyrifos 2000 times solution, or 25% Uranus emulsifiable concentrate 3000 times solution Spray treatment.
Control method:
1 In the early stage of the disease, 50% compound carbendazim suspension 500 times solution was sprayed with roots, or 70% mancozeb 700 times solution was sprayed.
2 eradicate weeds and control aphids. Can be used to kill nail 毙 (21% synergistic cyanide, horse emulsifiable concentrate) 6000 times solution, or 40% fenvalerate 6000 times solution, or 20% chlorpyrifos 2000 times solution, or 25% Uranus emulsifiable concentrate 3000 times solution Spray treatment.
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