Ethephon is a common plant growth regulator. It not only has the ripening effect on crops, but also improves the yield and quality of crops. What if Ethephon is used as a plant growth regulator for cotton?

Ethephon has the effects of promoting fruit ripening, stimulating wound flow, regulating gender conversion, etc. It is a high-quality and efficient plant growth regulator. Proper use of ethephon to promote cotton boll, can make bolls early 7-10 days, increase yield by 6.4% -10.2%, increase income per acre 26-40 yuan. But pay attention to the following points when using:

Ethylene is acidic, and it will rapidly decompose and fail in the presence of alkaline substances. Therefore, ethephon is strictly prohibited from being mixed with alkaline pesticides, and it cannot be diluted with alkaline water such as pit pond water. Ethylene can release ethylene gas at a pH of 3.8 or higher. After dilution with water, the pH value will change, so it should be used with it, otherwise it will affect the efficacy.

Ethephon on the market mainly consists of two kinds of water and oil. No matter which one is used, it should be checked for failure before use. A small amount of the original drug can be poured on the concrete floor, and the foaming is more effective. If the chemical solution produces a precipitate, it can be heated and shaken with warm water of 70-80 ° C, and the precipitate is dissolved and used again without affecting the efficacy.

It is necessary to choose cotton fields and summer cotton fields that are greedy, late-maturing, late-developing, and intercropping. It is not suitable for cotton fields with normal growth and development and premature aging, otherwise it will cause cotton to wither and lead to premature wilting. For the breeding of good varieties, it is generally not used, otherwise it will lead to a decrease in the germination rate of cotton.

Ethylene must be decomposed and released in the environment above 20 ° C to release ethylene, dry high temperature weather is conducive to improve the efficacy. Therefore, it is generally mastered that 20 days before the frost, 80% cotton hangs for 40-45 days, and when the maximum temperature is above 20 °C, it is sprayed. If it rains within 12 hours after spraying, it should be sprayed once. The specific time, Huanghuaihai area around October 5.

The cotton field that is late-maturing or cotton-growing, only one spray on the upper bell is too large, and can be sprayed twice. That is, the middle and lower cotton bolls of the cotton plant are sprayed in the middle and late September, and the top cotton boll is sprayed once more in the first half of October. Since the ethephon is absorbed and the transport is slow, it should be sprayed on the boll as much as possible. It should be noted that the bolled cotton bolls should be removed before spraying to avoid contamination of the liquid and reduce the quality of the cotton.

Generally, the cotton field is used with 100-150 g of raw liquid and about 60 kg of water, and is formulated into a 0.15%-0.25% liquid spray. For cotton fields that are heavily greedy or eager to vacate, the concentration can be increased, but generally does not exceed 0.3%.

More ethephon, please pay attention to pesticide network

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