Recently, Lulong County Agricultural and Animal Husbandry Bureau technicians went to the countryside and found that the individual corn plots in Yinzhuang Village, Chenguantun Township, caused dry planting and lodging, and the diagnosis was due to corn stem rot.

Corn stalk rot, also known as stalk rot, is a type of disease that occurs when corn rots in the base of the stem or stem and causes rapid death of the whole plant. The high temperature and high humidity during the tasseling period to maturity are important conditions for the epidemic of the disease. Milk ripening to wax ripening period is the peak period of the disease.

The disease is a soil-borne disease, with sick seeds and diseased bodies being the main source of primary infection. Bacteria may overwinter on seeds or in the soil and invade through stomata or wounds. Pests and wounds caused by storms are conducive to the invasion of germs. High-temperature, high-humidity, low-lying or poor drainage, excessive density, poor ventilation, and partial application of nitrogen fertilizers are more serious. Therefore, heavy rain often occurs in large numbers.

The bacteria invade from the root system and spread and expand in the plant body. At the time of onset, there was a brownish irregular lesion extending longitudinally between the first and second sections of the disease stem. The stem was examined and the internal tissue was decomposed. The vascular bundle was free from filamentous and the stem became soft and easy to fall. The primary and secondary roots of most diseased plants became necrotic and became red with fewer roots. When the conditions are appropriate, the disease develops rapidly, and the ground does not get water, which causes the whole plant to suddenly die. The leaves are grayish green, especially when the rain is fine and clear, wilting and blue-green are more obvious.

Corn stalk rot is divided into two types of stalk rot and bacterial stalk rot. Green-stem stalk rot occurs at the root-filling stage of maize, and the period from milk ripening to wax ripening is the peak period of disease. Bacterial stalk rot usually occurs when 10 corn leaves are present, and it is mainly wilting and stalk rot. The key to differentiation is whether or not the diseased tissue has a rancid bacillus, if any, it is a bacterial stalk rot; otherwise it is a wilting stalk rot.

The wilting rot stalk rots from the leaves of the first to the whole plant withering, generally 5-7 days. The onset takes only 1-3 days and the long duration lasts for more than 15 days. In the late stage of milking, they often suddenly become wilting and die. The internodes turned brownish, the ears were dry and the leaves were dry, the handles were flexible, the ears drooped, they were not easy to be separated, the cobs were soft, the grains dried up, and the threshing was difficult.

Agricultural control: Implement crop rotation, select resistant varieties, and strengthen water and fertilizer management. After the disease was found in the field, it was promptly removed and brought out of the field with high-temperature manure or concentrated burning.

Chemical control: Use carbendazim to add spray of agricultural streptomycin sulfate, irrigate roots, spray once every 7-10 days, and spray 2-3 times continuously, which can effectively control the development of diseases.

Personal Protective Clothing

Protective Clothing,Protective Coverall,Protective Coverall Suit,Full Body Protection Suit

Taizhou huangyan Yiman industry & trade limited , https://www.yimancoverall.com