What pesticide is effective for controlling red worms in paddy fields
The red worm, also called the aquatic earthworm, is bright red in color and likes to gather densely in water, which can affect the health of rice roots and stems, so pesticide control is needed.What pesticide should be used for red worms in paddy fields?
1. What pesticide should be used for red worms in paddy fields
For red worms in paddy fields, 29% beta-cypermethrin and dichlorvos emulsifiable concentrate can be applied at 70-80 ml per mu, 8% Daolefeng aqueous solution 80 ml diluted with 15 kg of water for spraying, or 3% phoxim effervescent granules 60 ml, evenly broadcast into the field. At the same time, pesticides such as chlorpyrifos granules, carbosulfan, and carbaryl can also be selected for broadcasting.
2. What is the red worm
The red worm looks like a young earthworm. It belongs to the aquatic oligochaetes among annelids. Its body color is bright red or flesh red, or orange-yellow. It is slender, generally about 4 cm long, and can reach up to 10 cm at most.
Its individuals are not large, but the population yield is relatively high. Red worms like to live in the sludge of micro-muddy waters rich in organic matter, generally lurking 10 cm-25 cm below the mud surface, and hiding deep in the mud at low temperatures. When they gather densely on the surface layer of the sludge, one end is fixed in the sludge, and one end extends out of the sludge and trembles in the water. Upon any disturbance, they immediately retract into the sludge.
Red worms reach sexual maturity in about 2 months. They are hermaphroditic and cross-fertilize. The eggs are enclosed in a capsule-shaped worm cocoon formed by a transparent gelatinous membrane. Generally, one worm cocoon contains 1-4 eggs, or as many as 7. During the reproductive period, each adult can release 2-6 worm cocoons. When the water temperature is 22-32°C, the incubation period is generally 10-15 days, and the lifespan of artificially cultured ones is about 3 months. In the south, they are mostly used as culture food for goldfish, koi, and river eel fry, and can also be used as fish bait.
In paddy fields, pesticide control is needed, and some people also use red worms for culture to make money.