Suitable crops
Vegetables, fruit trees, cotton, rice, tea trees, flowers, etc. Target vegetable pests, such as cabbage aphid, eggplant spider mite, onion thrips, pea leafminer, etc.; fruit tree pests, such as apple leafhopper, pear star caterpillar, psyllid, etc.; cotton pests, such as cotton aphid, cotton thrips, etc.; rice pests Such as planthoppers, leafhoppers, thrips, etc.; oil plant and economic crop pests such as aphids, thrips tabaci, tobacco budworm, etc.; tea tree pests such as tea orange gall mites, tea green leafhoppers, etc.; flower pests such as scale insects, gnats, Aphids, gall mites, psyllids, fruit flies, etc.
Application technology Take 40% and 50% dimethoate cream as an example.
(1) Control cotton pests
① Cotton aphids should be used when the average rate of aphid plants reaches 30%, the average number of aphids per plant is nearly 10, or the rate of leaf-rolling plants reaches 5%. Spray evenly with 50% dimethoate EC 40mL mixed with water 60kg.
② Cotton Thrips: When there are 4-6 true leaves in the cotton field and 100 plants have 15-30 insects, use the medicine. Spray evenly with 50% dimethoate EC 40mL mixed with water 60kg.
(2) Prevention and control of rice pests SBPH, white-backed planthopper, brown planthopper, leafhopper, thrips, spray evenly with 40% dimethoate EC 750~1125mL/hm2 mixed with water 1125~1500kg. The compound preparation with triazophos can be used to control borers, and the dosage is about 1125mL/hm2.
(3) Control vegetable pests: cabbage aphid, eggplant spider mite, onion thrips, pea leafminer, spray evenly with 50% dimethoate EC 600~750mL/hm2 mixed with water 900~1500kg.
(4) Control pests of oil plants and economic crops: Aphids, thrips tabaci, budworm, 750~900mL/hm2 of 50% dimethoate EC mixed with 900kg of water are evenly sprayed.
(5) Prevention and control of fruit tree pests
① Apple leafhopper, pear star caterpillar, psyllid Spray evenly with 50% dimethoate EC 1000~2000 times.
② Citrus red wax scale, citrus broad-winged cicada Spray evenly with 40% dimethoate EC 800 times.
(6) Prevention and control of tea tree pests Tea orange gall mites and tea green leafhoppers are evenly sprayed with 40% dimethoate EC 1000~2000 times.
(7) Prevention and control of flower pests Scale insects, moths, aphids, spray evenly with 40% dimethoate EC 2000~3000 times.
(8) To control underground pests such as mole crickets and grubs during the autumn sowing period, mix 50mL of 40% dimethoate EC with 2~3kg of water, spray and mix 20~30kg of wheat seeds, mix while spraying, and pile up for 3~ after mixing evenly Sow seeds after 4 hours.
mixed use
(1) Dimethoate and methamidophos are mixed with 40% dimethoate EC and 50% methamidophos in a ratio of 1:1, showing a certain synergistic effect, and preventing and controlling cotton aphids that have developed resistance to dimethoate , Cotton red spider, etc. are more virulent than dimethoate, similar to methamidophos.
(2) The mixing ratio of dimethoate and dichlorvos is 750mL of 40% dimethoate EC per hectare, and 375mL of 80% dichlorvos EC, which also has a synergistic effect on resistant aphids and spider mites on various vegetables. .
(3) The mixed use of dimethoate and pyrethroid pesticides also shows a good synergistic effect, which can effectively control aphids that are resistant to dimethoate, and can also control cabbage caterpillar, diamondback moth, cotton bollworm, cotton Red bollworms, mirid bugs, etc.
Precautions
(1) Plants such as tobacco, jujube, peach, apricot, plum, olive, fig, citrus, hops, compositae and sorghum are likely to cause phytotoxicity. Do phytotoxicity test first, and control the dilution factor Below 1500 times.
(2) Dimethoate is highly toxic to cattle and sheep. The sprayed green manure and weeds cannot be fed to cattle and sheep within 1 month, and the fields where the medicine has been applied cannot be grazed within 7~10 days. It is more toxic to the stomach of poultry, and more attention should be paid when using it.
(3) Dimethoate is highly toxic to bees, and the application of the drug should avoid the bee release area.
(4) Dimethoate is moderately toxic to humans and animals, but the amount that enters the human body is too large, especially if taken by mistake, it often causes acute poisoning.
(5) Dimethoate cannot be mixed with alkaline drugs.
(6) The maximum allowable residues on several agricultural products recommended by the joint meeting of the Food and Agriculture Organization of the United Nations and the World Health Organization: 2 mg/kg for fruits and vegetables; 1 mg/kg for peppers and tomatoes; 1 mg/kg for strawberries. The Ministry of Agriculture of my country stipulates that the safe interval of dimethoate on several crops is: tea 7d; tobacco 5d; citrus 15d; cucumber 2d; radish 5d; beans 3~5d; leafy vegetables 7d (autumn and winter 8d); Sanmai 10d; mulberry leaves 3~4d.
(7) Dimethoate will also decompose slowly during storage. When storing, it should be placed in a cool place to avoid direct sunlight and high temperature.
