Application of Plant Growth Regulators on Solanaceous Vegetables
1) Gibberellic Acid (GA3)
Spraying eggplant leaves with 10-50 mg/L Gibberellic Acid once during flowering can promote fruit setting and increase yield; spraying tomato flowers with 10-50 mg/L Gibberellic Acid once during flowering can promote fruit setting and prevent hollow fruits.
2) Chlormequat Chloride and Chlormequat
Spraying tomatoes with 500-600 mg/L Chlormequat Chloride at the 3-4 leaf stage can cultivate dwarf and strong seedlings and improve the survival rate after transplanting; 0.3% Chlormequat Chloride can also be used for seed coating, which has a certain effect on cultivating strong tomato seedlings and increasing stress resistance; during the tomato seedling stage, after transplanting, and during the initial flowering stage, spraying the entire plant with 100-150 mg/L Chlormequat can moderately dwarf the plant, promote root growth, promote early flowering and fruiting, and improve cold resistance.
3) DCPTA
Spraying tomatoes with 20-30 mg/L DCPTA twice during budding and flowering can prevent flower and fruit drop.
4) Anti-dropping agent
Dipping or spraying tomato flowers with 20-30 mg/L anti-dropping agent during the peak flowering period has a significant effect on fruit preservation and yield increase, especially when applied to the 3rd-5th flower of the inflorescence; spraying eggplant flowers with 20-30 mg/L anti-dropping agent during flowering can prevent flower drop and increase early yield; spraying chili peppers with 20-30 mg/L anti-dropping agent during the initial flowering period can preserve flowers and fruits and increase yield.
5) 2,4-D
Dipping or spraying tomato flowers with 20-30 mg/L 2,4-D during flowering can increase the fruit setting rate of tomatoes; spraying or dipping eggplant flowers with 25-50 mg/L 2,4-D during flowering can increase yield. 6) 1-Naphthyl Acetic Acid (NAA)
During the transition between spring and summer, when low or high temperatures easily cause tomato flowers to drop, spraying the flowers with 10-25 mg/L Naphthyl Acetic Acid can prevent flower drop. Avoid over-spraying or spraying on the growing points. During the flowering period of chili peppers, spraying with 50 mg/L Naphthyl Acetic Acid can effectively increase chili pepper yield. Naphthyl Acetic Acid can also be mixed with dry soil and paper scraps to create a medicated soil, which is then mixed with potatoes (200-300 mg per 1 kg of potatoes) to inhibit potato sprouting during storage.
7) Ethephon
To bring tomatoes to market earlier, when the tomato fruits have grown and are whitish-yellow, spray the plants or apply 1000-2000 mg/L Ethephon to the fruits. This can accelerate fruit ripening. Alternatively, green tomatoes can be picked and immersed in an 800-1000 mg/L solution for about 1 minute, then removed and placed at 20-25°C, which also promotes ripening.
8) Sodium Nitrophenolates (Atonik)
Potato tubers can be soaked in a 6000-fold dilution of Sodium Nitrophenolates (Atonik) for 5-12 hours before cutting and planting; during the growth and flowering stages of tomatoes, spraying with a 6000-fold dilution of Sodium Nitrophenolates (Atonik) 1-2 times is beneficial for plant growth.
9) Cytokinins
30 days after eggplant transplanting, spray with a 600-fold dilution, spraying once every 10 days for a total of 3 times. This can protect flowers and fruits, promote early maturity, and increase yield by about 30%. For tomatoes, starting from the 4-leaf stage, spray with a 400-450-fold dilution, spraying once every 10 days for a total of 5 times. This can protect flowers and fruits, increase yield by more than 25%, and also reduce leaf mold and mosaic disease. Before planting potatoes, soak the tubers in a 100-fold dilution for 12 hours, and during the growing season, spray with a 600-fold dilution three times consecutively to increase yield by more than 25%.
Spraying eggplant leaves with 10-50 mg/L Gibberellic Acid once during flowering can promote fruit setting and increase yield; spraying tomato flowers with 10-50 mg/L Gibberellic Acid once during flowering can promote fruit setting and prevent hollow fruits.
2) Chlormequat Chloride and Chlormequat
Spraying tomatoes with 500-600 mg/L Chlormequat Chloride at the 3-4 leaf stage can cultivate dwarf and strong seedlings and improve the survival rate after transplanting; 0.3% Chlormequat Chloride can also be used for seed coating, which has a certain effect on cultivating strong tomato seedlings and increasing stress resistance; during the tomato seedling stage, after transplanting, and during the initial flowering stage, spraying the entire plant with 100-150 mg/L Chlormequat can moderately dwarf the plant, promote root growth, promote early flowering and fruiting, and improve cold resistance.
3) DCPTA
Spraying tomatoes with 20-30 mg/L DCPTA twice during budding and flowering can prevent flower and fruit drop.
4) Anti-dropping agent
Dipping or spraying tomato flowers with 20-30 mg/L anti-dropping agent during the peak flowering period has a significant effect on fruit preservation and yield increase, especially when applied to the 3rd-5th flower of the inflorescence; spraying eggplant flowers with 20-30 mg/L anti-dropping agent during flowering can prevent flower drop and increase early yield; spraying chili peppers with 20-30 mg/L anti-dropping agent during the initial flowering period can preserve flowers and fruits and increase yield.
5) 2,4-D
Dipping or spraying tomato flowers with 20-30 mg/L 2,4-D during flowering can increase the fruit setting rate of tomatoes; spraying or dipping eggplant flowers with 25-50 mg/L 2,4-D during flowering can increase yield. 6) 1-Naphthyl Acetic Acid (NAA)
During the transition between spring and summer, when low or high temperatures easily cause tomato flowers to drop, spraying the flowers with 10-25 mg/L Naphthyl Acetic Acid can prevent flower drop. Avoid over-spraying or spraying on the growing points. During the flowering period of chili peppers, spraying with 50 mg/L Naphthyl Acetic Acid can effectively increase chili pepper yield. Naphthyl Acetic Acid can also be mixed with dry soil and paper scraps to create a medicated soil, which is then mixed with potatoes (200-300 mg per 1 kg of potatoes) to inhibit potato sprouting during storage.
7) Ethephon
To bring tomatoes to market earlier, when the tomato fruits have grown and are whitish-yellow, spray the plants or apply 1000-2000 mg/L Ethephon to the fruits. This can accelerate fruit ripening. Alternatively, green tomatoes can be picked and immersed in an 800-1000 mg/L solution for about 1 minute, then removed and placed at 20-25°C, which also promotes ripening.
8) Sodium Nitrophenolates (Atonik)
Potato tubers can be soaked in a 6000-fold dilution of Sodium Nitrophenolates (Atonik) for 5-12 hours before cutting and planting; during the growth and flowering stages of tomatoes, spraying with a 6000-fold dilution of Sodium Nitrophenolates (Atonik) 1-2 times is beneficial for plant growth.
9) Cytokinins
30 days after eggplant transplanting, spray with a 600-fold dilution, spraying once every 10 days for a total of 3 times. This can protect flowers and fruits, promote early maturity, and increase yield by about 30%. For tomatoes, starting from the 4-leaf stage, spray with a 400-450-fold dilution, spraying once every 10 days for a total of 5 times. This can protect flowers and fruits, increase yield by more than 25%, and also reduce leaf mold and mosaic disease. Before planting potatoes, soak the tubers in a 100-fold dilution for 12 hours, and during the growing season, spray with a 600-fold dilution three times consecutively to increase yield by more than 25%.
