According to the classification standard of pesticide toxicity in China, quizalofop-p-ethyl is a low toxicity herbicide. Quizalofop-p-ethyl is an improved product after removing inactive optical isomers in the process of synthesizing gramoke. The action mechanism and herbicidal spectrum of quizalofop-p-ethyl are similar to those of quizalofop-ethyl. Through the absorption of weed stems and leaves, it conducts upward and downward in the plant, accumulates at the top and intermediate meristem, inhibits the synthesis of cellular fatty acids and makes the weed necrosis. Quizalofop-p-ethyl is a highly selective new dry field stem and leaf treatment agent. It has a high selectivity between gramineous weeds and dicotyledonous crops, and has a good control effect on gramineous weeds in broad-leaved crop fields. The action speed of quizalofop-p-ethyl is faster, the efficacy is more stable, and it is not easy to be affected by environmental conditions such as rain, temperature and humidity. Quizalofop-p-ethyl is a new type of dry field stem and leaf treatment agent with optical activity. It is not easy to be affected by environmental conditions such as drought and temperature. It has the advantages of high efficiency, low toxicity and safety. It has a short degradation half-life in soil and does not affect the next crop. It has a high selectivity between gramineous weeds and dicotyledonous crops, and has a good control effect on gramineous weeds in broad-leaved crop fields. Absorbed by weed stems and leaves. Quizalofop-p-ethyl is mainly used to control annual and perennial gramineous weeds of broad-leaved crops, such as barnyardgrass, Dogtail grass, wild oats, arm grass, tendon grass, bromegrass, Qianjin, autumn grass, thrush grass, bermudagrass, reed, creeping ice grass, etc. it is not effective for broad-leaved weeds. Quizalofop-p-ethyl is an arylphenoxypropionic acid herbicide with selectivity, internal absorption and conduction, stem and leaf treatment and low toxicity. As a selective post bud herbicide, the leaves absorb and conduct, accumulate at the top, destroy the internode meristem, lose the regeneration ability, stop growth and wither. There is a high selectivity between gramineous weeds and dicotyledonous crops. The stems and leaves can complete the absorption of chemicals in a few hours and move to the upper and lower parts of the plant. The medicament can spread all over the plant within 24 hours to make the annual weed necrotic. After the annual weed is treated, the new leaves turn yellow and stop growing in 2-3 days, the stems and leaves become bad and dead in 4-7 days, and the whole plant withers and dies in 10 days. After the perennial weed is treated, the drug is rapidly transmitted to the underground rhizome tissue, making it lose its regeneration ability. Quizalofop-p-ethyl is mainly used in soybean, cotton, peanut, sugar beet, tomato, cabbage, grape and other crop fields to control annual and perennial gramineous weeds such as barnyardgrass, horse Tang, beef tendon grass, kanmai Niang, Dogtail grass, wild oats, bermudagrass, reed and white grass. The annual grass weeds were eliminated. When weeds were 3 to 6 pieces of leaves, 40 to 60 ml of 5% EC was applied to each acre. Spray treatment was carried out on the water of 40 to 50 kg of water. In order to control perennial grasses, weeds of 4-6 leaves per plant were treated with 5% EC to 130 ml – 200 milliliters per mu and 40 to 50 kg of water were sprayed with stem and leaf. Quizalofop-p-ethyl is ineffective against broad-leaved weeds. In the field, it is often mixed with monocotyledonous and dicotyledonous weeds. It should be considered to be mixed with herbicides to control broad-leaved weeds according to the types of weeds. Before mixing, its miscibility should be understood, and it is not allowed to be mixed with antagonistic and toxic drugs.
Post time: Dec-07-2021