1. Root rot is mainly caused by Fusarium, in addition to gray mold, gray chain fungus, Rhizoctonia and Rhizopus.
Soil disinfection is generally the best way to control root rot, mainly chloropicrin and cotton. Because chloropicrin is poisonous, Mianlong is the first choice. Sprinkle cotton wool into the ground, the dosage is about 5 kg/mu, and then plow it evenly with a rotary tiller. In addition, 20% fluconazole AS, 50% carbendazim WP and 200 million /g Trichoderma water dispersible granules have very good effects in the onset period (if you want more detailed information, such as EC50, you can send an email).
2. The control of Trichoderma root rot depends on the dosage form. I personally recommend 2 million /g Trichoderma water dispersible granules (Yunnan Yao Xing Biological Products Co., Ltd.).
3. Although the third question is uncertain, I think Kaiser, as a nicotinamide agent, is mainly used for the prevention and treatment of botrytis cinerea diseases, which has a good effect on hyphae, so I suggest you use sclerotia inhibitors as much as possible, such as sclerotia.