The zucchini planted by a farmer in Luocheng Town, Shouguang City, discovered the dead tree phenomenon and asked how it happened. The reason is likely to be blight, mainly affecting leaves and stems, followed by melons. Leaves attacked, resulting in near-circular or irregular shaped lesions, sometimes lesions appear "V" shaped or semicircular lesions inward from leaf margins, light brown to tan, later lesions easily broken, disease There is no obvious spot ring pattern, and many small black spots are scattered above the lesion. Stem damage occurs in the joints or near the joints, began to appear oily spots, oval or spindle-shaped, slightly concave, gray to dark brown, secrete an amber flow of glue material. After drying, it was reddish-brown, and the diseased part shrivelled and cracked. A large number of small black spots were scattered on the surface. When it was severe, it could cause stalk rot. Guatiao was killed and melon was pale brown. Control methods: In the early stage of the disease prevention and control, the product can be sprayed with 70% thiophanate-methyl wettable powder 500 to 600 times liquid, or 40% Nova Emulsion 10000 times liquid, sprayed every 4 to 5 days, and sprayed 3 to 4 times.
Our Teaching Products is good in quality and competitive in price. We are manufacturer and supplier Teaching Products following your specific requirement. We are looking forward to your E-mail and establishing cooperative relationship with you! We would provide professional Teaching with good services for you!
Teaching Products Normal Foot, Urinary System Model, Heart and Lung Model, Giant Eye Model, Model of The Head Ningbo Cland Medical Instruments Co., Ltd. , https://www.cland-med.com