Trichlorfon (C4H8O4Cl3P) is an organophosphorus ester compound, which has the advantages of high efficiency, low toxicity, low residual amount and short residual time in fish disease control.
In order to reduce and avoid the occurrence of parasite resistance to trichlorfon and improve the use of trichlorfon in a safe concentration range, the following measures can be taken:
(1) Rotational medication To prevent parasitic fish disease, do not use a drug of trichlorfon for a long time in order to cut off the formation of a pathogen resistant population.
(2) Combination therapy The combination therapy not only can simultaneously treat pests and diseases, increase drug efficacy, reduce costs, but also significantly overcome and inhibit the development of drug resistance. Such as: 90% crystal trichlorfon and ferrous sulfate mixture (0.5: 0.2) 0.25ppm to prevent the occurrence of 鲢 鳋 ; ; ; ;; 90% crystal trichlorfon and noodle mixture (1: 0.6) 0.25ppm can kill three generations Insects, ringworms.
(3) Enhancing the effectiveness of trichlorfon In order to enhance the efficacy of trichlorfon and reduce the resistance of parasites to it, in addition to strict control of symptomatic medication and careful use of drugs, rational compatibility synergist is also one of the ways to improve efficacy.
The rational application of trichlorfon in the fish disease prevention and control process how to use trichlorfon reasonably is a common concern in fishery production. The reasonable use of trichlorfon mainly pays attention to the following points:
(1) The use of trichlorfon to control parasitic fish disease should be adjusted according to the pathogen and the pH value of the water. The pH of the water can be slightly increased when the pH value of the water is 6.5-7. The pH is 8 -9 hours can reduce the amount of medication.
(2) In order to improve the prevention and treatment of fish diseases and reduce drug resistance, drugs should be used in rotation.
(3) When applying trichlorfon, do not add alkaline substances or wash with alkaline water to prevent the formation of more toxic methoxydichloroethylene phosphate to avoid poisoning of livestock and fish.
(4) The original drug of trichlorfon is acidic. When spraying, it is better not to use metal container to avoid corrosion. If metal sprayer is used, it must be washed with water in time.
In order to reduce and avoid the occurrence of parasite resistance to trichlorfon and improve the use of trichlorfon in a safe concentration range, the following measures can be taken:
(1) Rotational medication To prevent parasitic fish disease, do not use a drug of trichlorfon for a long time in order to cut off the formation of a pathogen resistant population.
(2) Combination therapy The combination therapy not only can simultaneously treat pests and diseases, increase drug efficacy, reduce costs, but also significantly overcome and inhibit the development of drug resistance. Such as: 90% crystal trichlorfon and ferrous sulfate mixture (0.5: 0.2) 0.25ppm to prevent the occurrence of 鲢 鳋 ; ; ; ;; 90% crystal trichlorfon and noodle mixture (1: 0.6) 0.25ppm can kill three generations Insects, ringworms.
(3) Enhancing the effectiveness of trichlorfon In order to enhance the efficacy of trichlorfon and reduce the resistance of parasites to it, in addition to strict control of symptomatic medication and careful use of drugs, rational compatibility synergist is also one of the ways to improve efficacy.
The rational application of trichlorfon in the fish disease prevention and control process how to use trichlorfon reasonably is a common concern in fishery production. The reasonable use of trichlorfon mainly pays attention to the following points:
(1) The use of trichlorfon to control parasitic fish disease should be adjusted according to the pathogen and the pH value of the water. The pH of the water can be slightly increased when the pH value of the water is 6.5-7. The pH is 8 -9 hours can reduce the amount of medication.
(2) In order to improve the prevention and treatment of fish diseases and reduce drug resistance, drugs should be used in rotation.
(3) When applying trichlorfon, do not add alkaline substances or wash with alkaline water to prevent the formation of more toxic methoxydichloroethylene phosphate to avoid poisoning of livestock and fish.
(4) The original drug of trichlorfon is acidic. When spraying, it is better not to use metal container to avoid corrosion. If metal sprayer is used, it must be washed with water in time.
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