Radix Iskanaganensis Pest Control Methods
Leaf blight, which damages the leaves, extends inward from the tips of the leaves or leaves, and rapidly spreads due to irregular black-brown lesions, causing the leaves to die. High temperature and heavy rainfall in the season. In the early onset of the disease, 50% carbendazim was sprayed at 1000 times to spray and sprayed once every 7-10 days, and sprayed 2-3 times continuously. Phosphorus and potassium fertilizers should be added during this period. Butterfly butterfly, its larvae commonly known as cabbage caterpillar, damage leaves from May onwards, especially in early June to late June serious harm, available pyrethroid pesticide spray control. Tobacco Enzymes,enzyme for tobacco,Enzyme for Tobacco Fermentation,enzyme for cigarette Sunson Industry Group Co., Ltd , https://www.sunsonchinaenzymes.com
Downy mildew, which is severely affected during the rainy season, mainly damages the leaves. Control methods: 1, clean gardens, treatment of diseased plants, reduce the pathogen; 2, rotation; 3, with 40% 200 aluminum alginate 200-300 times spray, spraying once every 7 days, continuous spray 2-3 times.
Sclerotinia, which originated in April, was severely affected by high temperatures during May-June, and was transmitted from the soil. Therefore, the leaves of the base began to develop, and then the stems and fruits. Control methods: 1. Rotation of dry crops or rotation of camphor crops; 2. Increased application of phosphorus and potassium fertilizers; 3. Application of lime sulfur mixture at the base of plants.