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Loach culture ponds should pay attention to fenpropathrin pollution
Fenpropathrin is a broad-spectrum pyrethroid insecticide with contact toxicity, stomach toxicity and certain repellent effects. It is mainly used to control various diseases of cotton, apple, cabbage and other crops. Despite its characteristics of high efficiency, low toxicity, and low residue, it still poses a hazard to the environment. Relevant tests showed that fenpropathrin is very toxic to loach, with a 96-hour lethal dose of 3810-9 (38 micrograms/liter) and a safe concentration of 3.810-9. The poisoned loach has symptoms such as rapid breathing and congested crotch. In severe cases, the loin, cheeks, abdomen and fins of the loach are red and red at the base, and some are splayed, backstroked, convulsed, and distorted. When using fenpropathrin on crops, it should try to avoid pesticides contaminating fish ponds, water sources, etc., and protect fishery water resources.