Catfish fish rice farming pesticide application methods to properly

Depending on the circumstances , selective spraying using the following method .

( 1 ) Sham spraying method

In the fish before the first application of pesticides in paddy field water deepened, flooded field surface 7 to 10 cm , such as a larger concentration of pesticides can be further deepened some of the fields of water , diluting the concentration of the liquid in the water , reducing or avoiding fish hazards. With a pore size bottle sprayer, sprinklers should upward sweep of rice stems and leaves, try spraying the drug in the rice leaf surface , reducing pesticide falling into the water field .

( 2 ) Drainage spraying method

Water off the field before treatment , exposing the soil surface , so that the fish concentrated in fish ditch, the fish slipped , and then spraying pesticides attention can not be applied into the ditch fish , the fish slipped in . Tanaka toxicity of pesticides to be degraded , and then further to the normal water depth of field .

( 3 ) The next sub- spraying method

First half a field or fields in a certain part to fight drugs , fish can not escape to another part of Tanaka fight drugs , the next day and then in another part of the Tanaka spraying.

( 4 ) water spraying method

Pesticides can also be applied to the inlet and outlet open, so that the water flow field , starting with the outlet of a pesticide , applied to the fields intermediate pause, to make contaminated water out of the field , and then applied to the intake from the middle at the end .

( 5 ) timing spraying method

Use powder pesticide manual sprayer spraying in the morning , because the morning Inaba , rice straw on the dew, most adherent powder , thereby reducing pesticide into the water . Use liquid, emulsion pesticides should be applied after the 16:00 ; summer temperatures should be in the 17 o'clock after spraying, reduce pesticide toxicity to fish . Do not raining or rain before spraying pesticides or pesticide will be washed into the water field , easily lead to fish poisoning.

Pay close attention to fish after spraying activities , such as found with symptoms of poisoning , you must immediately add new water , the best part of the discharge side of infusion of new waterside field water dilution water concentration to avoid fish poisoning .