Ethephon is mainly applied by spraying the whole plant. For early and mid-term tobacco, it is usually applied on sunny days. 62.5-87.5 ml of 40% Ethephon solution can be used per mu, diluted with 50-100 grams of water for spraying. In about 3-4 days, the tobacco plants will gradually turn from green to yellow, which is similar to natural maturity.

Ethephon is a plant growth regulator that can promote plant growth and development as well as increase yield and quality. In wheat planting, Ethephon can be used to ripen wheat and harvest it earlier, which is beneficial to improve the quality and yield of wheat. At the same time, the use of Ethephon can also improve wheat's stress resistance and enhance its drought and disease resistance.

The mechanism of action of Prohexadione calcium
The mechanism of action of Prohexadione calcium in cotton fields is mainly reflected in its growth regulation and yield improvement of cotton.

Brassinolide is a plant growth regulator that promotes the growth and development of wheat, rice and corn, improving yield and quality. It can be used in key periods such as seed dressing, seedling stage, jointing stage, flowering stage and grain filling stage, and can be used in conjunction with other fertilizers or chemicals.