Q: There are rust-like lesions on corn leaves. What is the expert's illness?
Answer: This is corn rust. Corn rust mainly includes common rust, southern rust, tropical rust, and stem rust. In recent years, ordinary rust has been severe in many areas and has a major impact on production. Ordinary rust mainly occurs in the late growth period of corn. When the disease is serious, the leaves are covered with rust-like spots and affect the photosynthesis and metabolism of the plants, resulting in a 10%-30% reduction in yield.
Disease symptoms and diseases can occur in any part of the corn plant shoots, with the most serious disease. At the beginning of the disease, small yellow spots scattered on the leaves, the lesions gradually bulging, the shape of a round or oval, the color was yellow brown or reddish-brown. At the late stage of plant growth, black protuberances gradually formed on the lesions, and after the rupture, black powder was emitted, which was the fungal winter spore.
Control methods Planting disease-resistant varieties: There are significant differences in the disease resistance of varieties, and they should be planted in local production to show resistance to disease or moderate resistance to disease.
Agricultural control: Do not apply nitrogenous fertilizers but apply phosphorus and potash fertilizers to increase plant resistance. Chemical control: In the early stage of disease, spray 20% Triadimefon EC 1000-1500 times to control the spread of disease.
Nuts can generally be divided into two types: one is seeds, such as sunflower seeds, pumpkin seeds, peanuts, etc.; the other is tree nuts, such as pistachios, hazelnuts, cashews, walnuts, pine nuts, walnuts, chestnuts, almonds. And the macadamia and pecans that have been very hot in the past two years. These nut foods contain more protein, calcium and a variety of vitamins, which can provide the body with a variety of nutrients needed by the brain and body.
In general, a nut is a closed fruit classification of a nutrient-covered woody or leathery hard shell. The skin is hard and contains one or more seeds. It includes two types of tree nuts and fruit seeds, walnuts, chestnuts, pistachios, almonds, etc., melon seeds, which belong to the fruit seed class.
Mix Nuts,Walnut Nuts,Almond Nuts,Pistachios Nuts
Hangzhou Aiyomi food co.,LTD , https://www.aiyomisnacks.com