Prevention and Rescue measures of three Major Drug damage to Cotton
1. Strict operation and effective prevention. When using all kinds of drugs mentioned above, cotton must be used rationally in accordance with the operation rules (including drug type, concentration, method and time, etc.), so that it can not only give full play to its efficacy, but also reduce the cost and prevent drug damage.
2. Timely "rescue" and eliminate "dangerous situation". After the occurrence of drug damage, a large amount of water can be sprayed on the leaves for leaching, and irrigation, drainage and washing medicine can be used in the soil, or safety agents can be used to neutralize and detoxify. If Bordeaux liquid is misused, 0.5%-1% lime milk can be sprayed due to drug damage caused by copper ions; medicine buckets sprayed with herbicides should be specially used or thoroughly washed with soapy water before they can be used in cotton fields. When spraying herbicides, a non-spraying safety belt with a width of 50 to 100 meters should be reserved with adjacent cotton fields.
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2019 New cotton varieties: high-yielding cotton seeds, a new high-yield insect-resistant cotton variety has been cultivated in Anhui.
The Cotton Research Institute of the Chinese Academy of Agricultural Sciences recently developed a new cotton variety (Zhongmiansuo 53) in Hefei that can increase production by 20%. It can produce more than 50 peaches per plant and yield 751 jin of seed cotton per mu, twice as much as ordinary cotton, and has stronger insect resistance. At present, China Cotton Institute 53 has been listed as a subsidized variety of cotton in Anhui Province in 2007. At the same time, Zhongmiansuo 53 is also a bivalent transgenic insect-resistant cotton.
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Remedial measures for Drug damage of Cotton
First, elution. Most chemicals are not resistant to water scouring. If you find that the medicine is not used properly, you can immediately wash the stems and leaves repeatedly with a sprayer filled with water, so as to flush away the chemicals left on the surface of the cotton plant and reduce the drug damage; when flushing, the air pressure of the sprayer should be sufficient and the amount of water sprayed should be large. For the cotton fields with soil application and the drug damage caused by some herbicides, the soil can be irrigated immediately and the residual chemicals can be leached into the deep soil. Second, fattening. In general, fertilizer or foliar spraying should be applied to the symptoms such as leaf spot, leaf margin scorching, plant yellowing and so on.
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