How to achieve good control results for cotton bacterial angular leaf spot
I. Agricultural measures. 1. Prepare the land carefully, apply sufficient base fertilizer, irrigate enough to ensure subsoil moisture, and select disease-resistant varieties. 2. Use reasonable crop rotation and deep plowing with winter irrigation to promote the decomposition of diseased plant residues. 3. During the seedling stage, strengthen intertillage, reduce soil moisture, apply less nitrogen fertilizer, apply more phosphorus and potassium fertilizer, and cultivate strong seedlings. 4. Strengthen cotton field management, drain promptly after rain...
I. Agricultural measures.
1. Prepare the land carefully, apply sufficient base fertilizer, irrigate enough to ensure subsoil moisture, and select disease-resistant varieties. 2. Use reasonable crop rotation and deep plowing with winter irrigation to promote the decomposition of diseased plant residues. 3. During the seedling stage, strengthen intertillage, reduce soil moisture, apply less nitrogen fertilizer, apply more phosphorus and potassium fertilizer, and cultivate strong seedlings. 4. Strengthen cotton field management, drain promptly after rain, promptly pull out diseased plants and residues and carry them out of the field to be deeply buried or burned, reducing pathogens in the field.
II. Chemical measures.
1. Before sowing, first delint the cottonseed. Using sulfuric acid delinting can effectively kill the angular leaf spot pathogen carried on the short fuzz of cottonseed, and can also kill other pathogens transmitted by seeds. 2. After cotton becomes diseased, 10 grams of 72% agricultural streptomycin can be added to 30 kg of water and evenly sprayed at 60 kg of spray solution per mu, or 1:1:200 Bordeaux mixture plus New High Lipid Film can be sprayed for control.