What are the commonly used plant growth regulators for cotton?
Commonly used plant growth regulators for cotton include Ethephon, Thidiazuron (TDZ), Gibberellic Acid (GA3), Sodium 1-Naphthyl Acetic Acid, Mepiquat chloride, and Uniconazole. These regulators play different roles in different stages of cotton growth.
Ethephon: Mainly used to accelerate ripening and promote plant maturity. After Ethephon enters the plant body, it will release ethylene depending on the pH value of the plant tissue, promote maturity, inhibit elongation growth, promote organ shedding, and induce flower bud differentiation.
Thidiazuron (TDZ):
Used as a defoliant, it is absorbed by cotton leaves and promotes the formation of a natural abscission layer between stems, leaves and petioles to cause leaf fall. The defoliation effect is affected by factors such as temperature and air humidity.
Gibberellic Acid (GA3): Promotes cell division and growth, and reduces bud and bell shedding. Gibberellic acid enters the plant body through leaves, twigs, flowers, seeds or fruits, and is transmitted to the active growth sites to act.
Sodium 1-Naphthyl Acetic Acid: Prevents cotton buds and bolls from falling off, and has drought and waterlogging resistance. NAA can promote fruit enlargement and early maturity, and has a certain effect on controlling cotton growth and increasing yield.
Mepiquat chloride:
Inhibits vegetative growth, promotes reproductive growth, and controls plant height and internodes. Mepiquat is safe and plays an important regulatory role in the growth of cotton.
Uniconazole:
Delays plant growth, inhibits stem elongation, shortens internodes, promotes tillering, and improves stress resistance.
Diethyl aminoethyl hexanoate (DA-6):
It has a regulating and promoting effect on cotton. It can increase the content of chlorophyll, protein, and nucleic acid in the plant; increase the photosynthetic rate, enhance the plant's absorption of water and fertilizer, and regulate the water balance in the plant, thereby improving the plant's drought and cold resistance.
S-abscisic Acid (S-ABA):
This product can enhance plant photosynthesis, promote root development and the synthesis and accumulation of nutrients, and has a certain effect on improving quality and increasing yield.
Sodium Nitrophenolates (Atonik):
Atonik is characterized by accelerating the rooting speed of cotton, promoting growth and fruiting. It is generally better to use it in the seedling and late stages of cotton, which can promote early growth and prevent early aging in the late stage.
Brassinolide:
It can improve seed vitality, promote root development, regulate plant robust growth, improve fertilizer utilization, enhance crop resistance, and increase fruiting rate. This product can be mixed with other regulators or used alone to relieve drug damage or as an auxiliary drug for preventing and controlling diseases.
The use methods and effects of these regulators vary depending on specific conditions and need to be selected and used according to actual conditions.
Ethephon: Mainly used to accelerate ripening and promote plant maturity. After Ethephon enters the plant body, it will release ethylene depending on the pH value of the plant tissue, promote maturity, inhibit elongation growth, promote organ shedding, and induce flower bud differentiation.
Thidiazuron (TDZ):
Used as a defoliant, it is absorbed by cotton leaves and promotes the formation of a natural abscission layer between stems, leaves and petioles to cause leaf fall. The defoliation effect is affected by factors such as temperature and air humidity.
Gibberellic Acid (GA3): Promotes cell division and growth, and reduces bud and bell shedding. Gibberellic acid enters the plant body through leaves, twigs, flowers, seeds or fruits, and is transmitted to the active growth sites to act.
Sodium 1-Naphthyl Acetic Acid: Prevents cotton buds and bolls from falling off, and has drought and waterlogging resistance. NAA can promote fruit enlargement and early maturity, and has a certain effect on controlling cotton growth and increasing yield.
Mepiquat chloride:
Inhibits vegetative growth, promotes reproductive growth, and controls plant height and internodes. Mepiquat is safe and plays an important regulatory role in the growth of cotton.
Uniconazole:
Delays plant growth, inhibits stem elongation, shortens internodes, promotes tillering, and improves stress resistance.
Diethyl aminoethyl hexanoate (DA-6):
It has a regulating and promoting effect on cotton. It can increase the content of chlorophyll, protein, and nucleic acid in the plant; increase the photosynthetic rate, enhance the plant's absorption of water and fertilizer, and regulate the water balance in the plant, thereby improving the plant's drought and cold resistance.
S-abscisic Acid (S-ABA):
This product can enhance plant photosynthesis, promote root development and the synthesis and accumulation of nutrients, and has a certain effect on improving quality and increasing yield.
Sodium Nitrophenolates (Atonik):
Atonik is characterized by accelerating the rooting speed of cotton, promoting growth and fruiting. It is generally better to use it in the seedling and late stages of cotton, which can promote early growth and prevent early aging in the late stage.
Brassinolide:
It can improve seed vitality, promote root development, regulate plant robust growth, improve fertilizer utilization, enhance crop resistance, and increase fruiting rate. This product can be mixed with other regulators or used alone to relieve drug damage or as an auxiliary drug for preventing and controlling diseases.
The use methods and effects of these regulators vary depending on specific conditions and need to be selected and used according to actual conditions.
