How to Control Maize sheath Blight by breaking Maize Stem

Corn sheath blight occurs in all maize producing areas and is caused by dead silk nucleus. In addition to corn at risk, it also infects rice, wheat, sorghum, cotton, soybean and other crops.

corn

Pathogenesis:

Sclerotinia sclerotiorum overwinters in soil and infects maize in the second year. Leaf sheaths at the base of maize stems develop first and gradually expand. The maize at jointing stage begins to suffer disease, at tasseling stage, the disease develops rapidly, at silking and filling stage, the damage is heavy. Corn crop planting, disease severity; high water and fertilizer, high density, high field humidity, poor ventilation and light transmission, disease severity. 7-8 The month precipitation is many, the precipitation is big, easy to induce the disease.

Control methods:

① Planting disease-resistant varieties: corn varieties with moderate leaf size and upward inclination, good ventilation and light transmission in the field, light disease.

(2) Strengthen cultivation management: rational fertilization, avoid partial application of nitrogen fertilizer, reasonable irrigation and drainage, reduce field humidity and improve disease resistance. In the early stage of disease, peeling off some diseased leaf sheaths of maize can alleviate the disease.

(3) Chemical control: in the early stage of disease, use Tianda-2116 600 times solution +96% hymexiline 3000 times solution to control or spray 5% Jinggangmycin 100-150 ml, or 20% powder 25 g, or 150-200 ml agricultural antibiotic 120 water solution with 50-60 kg corn stem and leaf per 666.7 square meters. Or spray with 3% multi-antibiotic 0.25 g mixed with 600 times water. Also available 50% thiophanate-methyl WP, or 50% carbendazim WP + Tianda-2116 grain special type 500-800 times liquid spray.