Weeds are the enemy of nutritional competition in the crop planting process, so many growers have tried to clear it. Herbicides are a good partner for growers at this time, but what are the characteristics and differences of herbicides? What issues should you pay attention to during the use of herbicides?
Summary of common herbicide properties:
1. Butachlor (Marsett, chlorpyrifos, chlorpyrifos)
Selective pre-emergence; bud and root absorption, effective for weeds before and before the second leaf stage; no effect on post-crop crops; grass weeds, some sedge weeds and some broad-leaved weeds; The melon weeds can be applied 1 to 2 days before the seedling or before transplanting; the effect on the cattle is poor.
2. Metolachlor (Dur, Dürr, Methotrexate, Rice Enthus)
Selective pre-emergence soil treatment agent; bud sheath (monocotyledon) or bud, radicle (dicotyledon) absorption; peanut, soybean, vegetable, corn, sugar cane, melon and other dry crops weeding; soil moisture must be maintained after medicine ;
3. Dimethoprim (Shi Tianbu, weeding, amine nitriceps)
Inhibition of meristematic cell division. Does not affect the germination of weed seeds. In the process of germination of weed seeds, the shoots, stems and roots act after absorption; in soybeans, corn, cotton, tobacco, peanuts and various vegetables and orchards, we control annual grass weeds and some broadleaf weeds; The effect of controlling monocotyledon weeds is better than that of dicotyledon; it is applied after watering;
4. Jingjing kills (fine flurazepam)
Selective stem and leaf treatment agent for systemic absorption; grass weed; stem and leaf absorption, and hydrolysis to acid; broadleaf crop; grass weed; slow speed; effective period of up to 45 days; The herbicidal effect is good when the humidity is high;
5. Efficient cover grass (high-efficiency flupirtine, fine-grass, high-efficiency fluorofluoro)
Systemic selective herbicides; stem and leaf treatment; long residual period; effective in summer 1 week, 20 days in winter; broadleaf crop fields; grass weeds; broadleaf weeds and sedge weeds Invalid; stop taking medicine 60 days before harvest;
6. Jinghecao Ke (Quigoling, Hecao Ke)
Systemic selective herbicide; 2 days, the new leaves turn yellow; 1 to 2 hours even if it rains, it does not affect the herbicidal effect; broadleaf crops; grass weeds; melons, soybeans, peanuts and vegetable fields; Ineffective for sedge weeds and broadleaf weeds;
7. Weiba (éª é©¬, éª çµ, high oxazoline)
Selective endocytosis post-emergence herbicide; flexible application period (weed from one leaf to the end of tillering), safe for crops, no residue for post-mortem; melons, vegetables, ornamental plants, orchards, tea gardens, medicinal plants Gramineous weeds;
8. Killing grass (killing grass, straw, straw, and rice)
Selective herbicides with systemic absorption; bud and root absorption; absorption of the drug after seed germination; significant effect before the second leaf stage of valerian, significant decline in the three-leaf stage; rice, vegetables, barley, rape, Purple cloud weeding. The use of melon is generally used before sowing.
Vegetable field weeding 10 "Attention":
1. Pay attention to using medicine before the seedlings
2. Pay attention to make the soil smooth and humid
3. Pay attention to timely medication
4. Pay attention to evenly spraying pesticides
5. Pay attention to reducing the amount of medication in the facility cultivation area.
6. Pay attention to the alternating medication
7. Pay attention to timely covering
8. Pay attention to the selection of herbicides with short duration.
9. Pay attention to the dosage
10. Pay attention to medication time
Food additives are substances added to food. Some additives have been used for centuries. With the advent of processed foods in the second half of the twentieth century, many more additives have been introduced, of both natural and artificial origin.
The advantages of food additives are these followed:
1. Improve the appearance of food.
2. Keep and enhance the nutrition value of food.
3. Increase the variety and conveniences of food.
4. Miantain freshness and prolong shelf life.
5. Provide leavening or control acidity and alkalinity.
Food Additives,Natural Food Additives,Food Additives Preservatives
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