In order to reduce the possibility of residues of herbicides in vegetables, in the production of green vegetables, herbicides with no residual soil should be used as far as possible. The principle of selection is micro-toxicity to humans and animals, no residue in vegetables, no side effects to soil, and can be controlled The hazards of weeds and their suitability for use in a variety of vegetables are described here as six herbicides suitable for green vegetable production.
1. Weeding pass (Shi Tianbu) (1) dosage form and mechanism of action 33% EC. Soil treatment herbicides. Through the weed sprouts, young shoots and roots are absorbed, and the conductivity in the body is poor. Due to this feature, there is minimal residue in the vegetables. The symptom of weeds is that young shoots and secondary roots are inhibited, resulting in death, low volatility and water-solubility, strong soil adsorptive power, difficulty in leaching, and little or no effect of mixed soil after application. Residues in the soil are 6-9 weeks. (2) Applicable to vegetables such as cabbage, potatoes, lettuce, legumes, carrots, garlic, leeks, onions, eggplants, peppers, vegetables, Chinese cabbage, mustard, cauliflower, cabbage, and Artemisia. Leek, melon vegetables. (3) Control objects of crabgrass, Setaria viridis, Valeriana officinalis, Alopecurus officinalis, Cinnamomum camphora, and Teff. Pork crickets, flat animals, alien sedges, alfalfa, purslane, alfalfa, fancier, Li et al. (4) Application technology Soil treatment after planting seedlings before transplanting or before transplanting. When soil is arid, soil should be mixed to avoid direct contact between vegetable seeds and pesticides. 667m2 with 33% weeding through the EC 100-167 ml water 50 kg spray. (5) Comparing with the same type of acetochlor, safety to vegetables, non-toxicity to the soil, poor in vivo conductivity, no need to mix with trifluralin, and effective in removing part of broadleaf grass . Especially left. (6) The normal dose of the problem is to prevent the valerian, and the effect is poor when the soil is dry. When the amount is increased, it is also effective for the broad-leaved weeds. However, increasing the amount of rain may inhibit the growth of the vegetables. Therefore, the use of broad-leaved weeds should not be applied.
2. Direcine (1) Formulation and Mechanism of Action 48% EC. Selective soil treatment herbicides. It is absorbed by young shoots of weeds, inhibits cell division in meristems, thereby inhibiting the growth of young shoots and young roots, resulting in the death of weeds, low toxicity of volatile photolysis, and no residue, and control of foliar spray of soybean dodder. (2) Applicable to vegetables, vegetables, carrots, potatoes, sweet potatoes, beans, vegetables. (3) Control of objects such as crabgrass, cockroach, foxtail, arm-grass, g, crocuses, cockroaches, lee, cocoon silk, and purslane. (4) Application Techniques Before sowing or before planting, the vegetables should be treated with soil. When the drought occurs, the soil should be mixed. The 667m2 is sprayed with 48% of diazepam and 150-200 ml of water plus 60 kg of water. (5) Compared with the same kind and acetochlor ratio, it can be applied in melons and has no toxicity to soil. Compared with trifluralin, it has no obvious effect on the secondary roots of plants, and it is safe for vegetables. Dodge effects. No residue. (6) Problems Soils need to be mixed during droughts; they have poor effects on a wide variety of broad-leaved weeds.
3. Da Huili (1) Formulation and mechanism of action 50% WP. Selective soil treatment herbicides. The drug is absorbed by the roots of weeds, transmitted to the shoots and leaves of the shoots, and inhibits the growth of weeds and gradually dies. (2) Applicable to vegetables such as vegetables, cruciferous vegetables, potatoes, legumes, cucurbitaceous vegetables, leeks, onions, and garlic. (3) Control of objects such as crabgrass, bluegrass, clams, green foxtail, wild oats, goosegrass, purslane, lee, leeks. Festuca, corn grass, flat animals and so on. (4) Application Techniques Before sowing or before planting, the soil is treated with vegetables. After spraying, the 667m2 is sprayed with 50% Dahuili 60-150g water and 60kg of water. (5) Low toxicity and safety to vegetables compared with similar ones. Can be applied on live vegetables. It is highly efficient for barnyardgrass and it also eliminates some broadleaf grasses. No residue. (6) The problem is not effective for a wide variety of broad-leafed grasses; high levels are used on sandy soil; when the humidity is high, the growth of vegetables is inhibited.
4. Gore (1) Formulation and mechanism of action 24% EC. Contact killing selective soil treatment herbicides with post-emergence stem and leaf treatment. The weeds are absorbed by the shoots and roots of the weeds, and the weeds can be absorbed on the foliage, but they do not conduct in the plant and are not easily accessible. Due to this feature, it will not have residues in the vegetables. Even if it is used improperly, it will cause phytotoxicity to certain crops, and it will only be localized and easy to recover. It has special effects on the weeds and early weeds of weeds. It has a broad spectrum of herbicides and has no toxic effects on the soil. (2) Suitable for vegetable transplanting and leafy vegetables, Liliaceae, root vegetables, yam vegetables, pre-transplant fruit vegetables, transplanted vegetables, and some special vegetables. (3) Controlling the target species, Qianjin, Matang, Setaria viridis, Goosegrass, Hardgrass, Aegiceras corniculatus, Lamb grass, Poa camphora, Teff, Wild oats, Bromegrass, Heterophylla, Broken melon , sedge sedges, festival dishes, iron leeks, mason sons, drunk sod, scallions, caravans, sour models, cocklebur, purslane, mallow, yak, wild geranium, wild watermelon seedlings, Artemisia, amaranth, Lebanese, ragweed, flat storage, mother-in-law, curb blue vegetables, solanum nigrum, ramie, street food, sausage, lacquer, grass, grass, toed grass, grasshopper, duck tongue grass, There are more than 100 kinds of weeds such as Dingcao. The soil treatment had poor effects on the fanciful effect. The prevention of herbicides should be based on leaf spray. (4) Application technology Every 667m2 use 36-60 ml, add water 60-120 kg vegetable spray before transplanting. Liliaceae, root vegetables, and dioscorea vegetables were sprayed with water spray before sowing. Garlic is sprayed during the needle period. If it is sprayed after 3 leaves of garlic, the amount of water added should be reduced to 20-30 kg. (5) Comparing with other grasshoppers in the same category; using both pre-emergence and post-emergence applications; applying more types of vegetables; no residue in vegetables, no need to mix soil; Or long-term rain and clear, may have short-term burns on soybeans, can be restored later, do not poison the soil. (6) Problems in weeding under light conditions. After the application of beans and vegetables in the event of heavy rain or long rain became clear, easy to cause contact damage to legumes and vegetables. The effect of weeds on caryophyllaceae is poor.
5. Esocaconazole (soroxanone) (1) Formulation and mechanism of action 25% EC. Contact killing selective soil treatment herbicides. At high doses, there is post-emergence foliar action. The roots, buds, and leaves of weeds can all be absorbed and poorly conducted; weeding can be achieved under light conditions. (2) Suitable for vegetable transplanting and leafy vegetables; Liliaceae, root vegetables, Dioscorea vegetables; Transplanted fruit vegetables; Transplanted vegetables; Live beans. (3) Controlling objects such as cockroach, gold, Guan Tang, goosegrass, heterotype sedge, broken mesosa, stewed dish, stewed dish, mussels, scallops, duck tongue grass, lotus root, lebanon, lacquer, iron Leeks, shamrocks, split-leaf morning cows, cloves, etc. It is not effective against Caryophyllaceae weeds. (4) Application technology Add 125-128 kg of water to 667m2 per 667m2 of water before transplanting vegetables; 60kg of water before planting of lily plants and root vegetables. (5) Comparing with other similar grasshoppers, it can be used both before and after shoots, and there are no residues in vegetables. Can be applied on legumes. Do not poison the soil. (6) The problem of weeding under light conditions is not effective against Caryophyllaceae weeds.
6. Drought (B. Ethyloxy) (1) Formulation and mechanism of action 42% EC. Selective soil treatment herbicides. Absorbed by weed grass and roots, it has a strong post-emergence herbicide action. (2) Suitable for transplanting vegetables, leafy vegetables, liliaceae, root vegetables, yam vegetables, and fruit vegetables before transplanting. (3) In addition to controlling the weeds that Gore can remove, the control subjects can also control weeds in the family of carnations. (4) Application technology Spray 70-120 ml per 667m2 with 60-120 kg of water before transplanting vegetables. Liliaceae, root vegetables, and dioscorea vegetables were sprayed with water spray before sowing. Garlic is sprayed during the needle period. If it is sprayed after 3 leaves of garlic, the amount of water added should be reduced to 20-30 kg. (5) Comparing with other similar grasshoppers, it can be used both before and after shoots, and there are no residues in vegetables. Can control the weeds of carnations. Do not poison the soil. (6) Problems Because it contains Goul, it should not be applied to legumes.
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