1. Symptoms of the disease The disease mainly affects the leaves. It can also invade the vines and pods. After the leaves become infected, they first appear yellow-brown spots on the back of the leaves, and then expand to a purple-brown spot. They are covered with a thin layer of white powder. Later lesions develop along the veins. White powder spreads over the entire leaves. Severe leaves can also be represented on the back. Symptoms lead to yellow leaves and cause a lot of fallen leaves. 2. Control methods 1 Agricultural measures use resistant varieties. After the harvest of the vegetables, the diseased plant residues are promptly removed and burned or buried deeply. 2 Chemicals prevention and treatment in the early stage of disease prevention and control in a timely manner, pharmaceuticals can be used 15% Triadimefon 1500 ~ 2000 times, or 20% Triadimef EC 2500 times, or 50% Carbendazim WP 500 times, or 70% Thiophanate-methyl wettable powder 800 times, or 47% Garethon WP 600 times, or 60% mildew-resistant water-soluble powder 1000 times. Spray once every 7-10 days, spray 2 or 3 times. Raw Pumpkin Kernels,Raw Pumpkin Seed Kernels,Shelled Pumpkin Seeds,Raw Pumpkin Seeds Eaten Wuyuan county dafeng oil food co.,ltd , https://www.sundafengfoods.com