Q: Chen Shengwen, Lu Jizhen, Suiyang County: Wheat is in the 3 to 4 leaf stage. There are many grassy weeds in the 2 to 3 leaf stage in the field. However, the grass has not yet reached the same level. After a rain in these two days, weeding can be used. Agent control? In wheat fields, there are broad-leaved weeds such as broccoli and wild geranium. How can we prevent them?
Answer: For field grass weeds, we can use isoproturon mixed with clodinafop-propargyl or oxazoline clodinafop-propargyl, or wait until the weeds are basically out and select the oxazolysoxime and alginine Ester, oxazoline clodinafop and other drugs control. There should be no low temperature frost weather within 1 week after the application of isoproturon, otherwise it may cause freezing phytotoxicity.
Pre-winter control of wheat in the wheat field, you can use chlorofluoroacetate, 2 A 4 chlorine and other drugs. In recent years, C. falciparum in small wheat fields in central and southern Jiangsu Province may have strong resistance to tribenuron and other drugs, resulting in decreased control efficiency. In areas where tribensulfuron and other drug control effects are not ideal, fluoxypyracetic acid should be used. 2 A 4 chlorine and other drugs control. The control of wild barnyardgrass should catch the "green stem period" medication before weeding in winter before the weeds. To the weed "red stem period", the plant surface has more waxiness, higher degree of lignification, and poor drug application. In wheat fields with a small amount of geranium, appropriate increments of chlorofluoropyracetic acid and other drugs have certain control effects; in the case of large-scale wheat fields, vetoxamone and its compounding agent, pyridine can be used. Amine and other drugs to prevent.
The Dow Corning Company's preference is 7.5% for furfural oxime water dispersible granules, for agriculturists to see agricultura, Japanese apia and many other grass weeds and leeks, cows, and geraniums. Broad-leaved weeds have good control effect, and can be used in the low-temperature period, and have a certain degree of soil sealing treatment effect. The above-mentioned fields can be considered for using this medicine. Sulfoxamine has poor control effects against weeds such as pigweed, alfalfa grass and bluegrass. These fields with more weeds should not be used, or other drugs should be used as the herbicide for the fields.
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