Corn smut, also known as tumor smut, is one of the common corn diseases, caused by the infestation of corn smut. Jade pods caused by the black smut fungus, damage stems, leaves, ears, tassels, axillary buds and other young organizations. Corn smut causes damage to young shoots, stems, leaves, tassels, axillary buds, etc. of the plant's shoots. Affected tissues are stimulated to become tumors by pathogenic bacteria. When the tumor is immature, it is covered with white or reddish-brown, tender tissue, which later turns gray or gray-black. Finally, the outer membrane ruptures and the black powder is the pathogen, the chlamydospore. The shape and size of the tumor vary with the site of the disease. The tumor on the leaves and leaf sheaths resembles the size of the bean and does not produce or rarely produce black powder. The stems and ears on the stem are as big as fists. Often the same plant has multiple tumors, or several tumors at the same location are clustered together. The plant stems were twisted and the diseased plants were shorter. The damage is early, the ear is small, and it is not even possible to endear. The disease can invade any part of the plant and form a tumor. After the rupture, black powder is scattered, which is different from head smut. Head smuts generally only affect the ear and tassel, and there are messy black filaments.
Prevention:
1. Disease-resistant cultivars are generally resistant to drought-tolerant cultivars, dent corns are more resistant to sweet corn, and early maturing cultivars are more disease-prone than late-maturing ones.
2. Strengthen agricultural control Prevent and control corn borer and other pests in the early spring to prevent wounds. Thoroughly cut before the rupture of the tumor. After the autumn harvest, the field residues were cleared and the soil deep. Implement a three-year rotation. Apply adequately decomposed organic fertilizer. Pay attention to drought prevention and prevent uneven floods and droughts. Precisely irrigate before irrigation, do not suffer drought. Harvested fields are cut off before detasseling and are buried deep. They must not be thrown away in the field to reduce the spread of germs in the fields.
External Aluminum Foil Reflective Series
External Aluminum Foil Reflective Series,Sunshade Net with Grommets,Wind Resistant Outdoor Shade Net,Insulation Sun Shade Curtain
Changzhou Green Nets Co.,Ltd. , https://www.czglnets.com