mildew parasite infected vines plants. leaves affected by disease

affected agricultural agriculture bacteria botany bright cell cells chlorosis closeup conditions contagious countryside damage disease dying egetable esca farm farming field fruit fungicide fungus gardening glsd grape grapes grapevine growth harvest industry infection injuring insecticides leaf leaves lush margin microscopic multicolor nobody organic pathogens petri phloem phytoplasmas plantation purple red reddish rural spots spring stripe structure summer surrounded symptoms tissue typically vine vineyard vineyards viruses viticulture winery yellow