Application technology of chemical herbicides in vineyard

Application technology of chemical herbicides in vineyard

Trifluralin. It is a commonly used selective pre-bud soil treatment agent in orchard, which dies after being absorbed by the coleoptile and Hypocotyl of weeds, but has no effect on unearthed weeds. It is effective on broad-leaved weeds of Gramineae and some small seeds, and the effective period is as long as 75 ~ 80 days. Low toxicity to humans and animals, low toxicity to birds and high toxicity to fish. Easy to volatilize, easy to photolysis, very little water soluble, not easy to move in the soil layer. Before weeds are unearthed in the vineyard, 7m2 uses 48% EC 150 ~ 200ml mixed with water 30kg, soil surface spray after light ploughing, and then suppression, the effect is good when the soil moisture is good.

Pendimethalin. It is a herbicide for soil treatment before seed germination. it can be used to weed in vineyards, corn, soybeans, peanuts, cotton, direct seeding upland rice, potatoes, tobacco, vegetables and other crop fields. Weed buds absorb agents and bind to tubulin to inhibit plant cell mitosis and kill weeds. It has a good effect on annual Gramineae weeds, some broad-leaved weeds and sedges, such as barnyard grass, Equisetum equisetum, Euphorbia angustifolia, Portulaca oleracea, amaranth, quinoa, abutilon, Solanum nigrum, shredded rice grass, special-shaped sedge and so on. It has no effect on broad-leaved weeds with large seeds and poor effect on perennial weeds. It has strong adsorption in soil and no leaching, and the effect lasts for 45 ~ 60 days. Low toxicity to humans, animals, birds and bees. The vineyard should be watered before the weeds are unearthed, or after it rains, every 666. 7m2 30kg with 33% pendimethalin EC 100 ~ 150ml and topsoil spray. After application, the weeding effect is better in case of rain. It is easier to use than trifluralin, does not need concrete, saves labor and time, but has a shorter effective period.

Ethoxyfluoxane. It is a post-budding stem and leaf treatment agent. The herbicide has the advantages of wide spectrum, long lasting period, high activity, better effect when the light is good, and high resistance to leaching. Low toxicity. It can be used in combination with a variety of herbicides to expand the herbicide spectrum and improve the efficacy. It can not only seal and kill many kinds of weeds, but also get twice the result with half the effort; it can be treated before and after sprouting, so it is convenient to use. Control paspalum grass, sesame, abutilon, field mustard monocotyledon and broad-leaved weeds, special effect on purslane. After sprouting, the vineyard was sprayed evenly with 24% ethoxyfluoxane 40 ~ 50ml and water 30kg every 666.7m2. More than 2-year-old vineyards were mixed with pendimethalin while the moisture was sprayed, and the seedlings were planted with directional spray in the same year.

Glyphosate. It is an internal absorption and conduction type, chronic, broad-spectrum and inactive herbicide, which is absorbed through stems and leaves and transmitted to various parts of the plant, interfering with the synthesis of proteins and leading to plant death. Control annual and perennial weeds in monocotyledons and dicotyledons. When applying, it is forbidden for the mist to drift to the non-target plant to cause drug damage. After entering the plant for 6 ~ 7 days, most of the glyphosate was metabolized and decomposed. After entering the soil, it was combined with potassium and sodium, and then decomposed. There was no residue in the soil, and the decomposition was non-toxic. 7m2 with 41% glyphosate isopropylamine salt 200g mixed with water 30kg, directional spray.