Butachlor Product Introduction
Butachlor is a selective pre-emergence herbicide. It is mainly used to control annual gramineous weeds and certain broad-leaved weeds in direct-seeded or transplanted rice fields. It also has selectivity for wheat, barley, sugar beets, cotton, peanuts, and Chinese cabbage crops. The effective dosage is 1.0-4.5 kg of active ingredient per hectare. It is generally used for pre-emergence soil surface treatment and can also be applied post-seedling in paddy fields, making it an important herbicide variety for rice fields.
I. Physicochemical Properties
Butachlor is an amber liquid with a boiling point of 196℃ (66.7kPa). It is poorly soluble in water but miscible with acetone, benzene, ethanol, ethyl acetate, and hexane. It decomposes at 275℃, is stable at pH 7-10, and stable to ultraviolet light.
II. Agent Characteristics
Butachlor is an amide-based selective systemic herbicide. The pure product is a pale yellow oily liquid with a slight aromatic odor. It is poorly soluble in water but easily soluble in various organic solvents. It is chemically stable at room temperature and under neutral or weakly alkaline conditions. It decomposes faster under strong acidic conditions and can be degraded in soil. It has low toxicity to humans and animals, but irritating effects on the skin and eyes, and high toxicity to fish. Butachlor is mainly absorbed by the young buds of weeds and then transported throughout the plant to take effect. It can be used both pre-emergence and at the seedling stage. After being absorbed by plants, it inhibits and destroys proteases in the body, affects protein formation, and inhibits the normal growth and development of young buds and roots of weeds, thereby causing the weeds to die. When used in clay loam and soil with high organic matter content, the agent can be absorbed by soil colloids, is not easily leached, and its effective period can reach 1-2 months.
III. Main Uses
As a selective pre-emergence herbicide, it is mainly used to control annual gramineous weeds and certain broad-leaved weeds in direct-seeded or transplanted rice fields. It also has selectivity for wheat, barley, sugar beets, cotton, peanuts, and Chinese cabbage crops. The effective dosage is 1.0-4.5 kg of active ingredient per hectare. It is generally used for pre-emergence soil surface treatment and can also be applied post-seedling in paddy fields, making it an important herbicide variety for rice fields.
IV. Control Objects
In dry fields, it needs to be applied under moist soil conditions. It can control annual gramineous weeds and certain dicotyledonous weeds such as barnyard grass, crabgrass, green foxtail, hair grass, duckweed, knotweed, and heterogeneous sand grass. It is suitable for weeding in vegetable fields of Chinese cabbage, bean vegetables, radishes, cabbage, solanaceous fruits, spinach, etc.
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