Five precautions for using regulators in cotton fields
1. Pay attention to the scope of application. Cotton fields suitable for plant growth regulators must have good water and fertilizer conditions, and the cotton must show a tendency to excessive growth or already be growing excessively. They must not be used in cotton fields where the climate is dry and irrigation is not possible, where growth is weak, or where growth is inhibited by pests and diseases. 2. Pay attention to the application period. Mepiquat chloride generally...
I. Pay attention to the scope of application. Cotton fields suitable for plant growth regulators must have good water and fertilizer conditions, and the cotton must show a tendency to excessive growth or already be growing excessively. They must not be used in cotton fields where the climate is dry and irrigation is not possible, where growth is weak, or where growth is inhibited by pests and diseases.
II. Pay attention to the application period. Mepiquat chloride is generally applied from full squaring to early flowering, and chlormequat chloride is applied at the flowering stage, from late June to early July.
III. Pay attention to the dosage. If the dosage is too large, the cotton plants will be inhibited too severely and self-shade, and especially when chlormequat chloride is excessive, the bolls will become small and deformed, the boll shells will thicken, and maturity will be delayed with reduced yield; if the dosage is too small, it will not achieve the inhibitory effect. Dosage per mu: mepiquat chloride 2 grams, mixed with 30 kg of water; chlormequat chloride 30 ppm solution 30 kg, sprayed evenly on the top of the cotton plants and the tips of the fruiting branches.
IV. Pay attention to strengthening management. After using growth regulators in cotton fields, management must be strengthened, with attention to watering and fertilizing, so as to promote below and control above. Prevent the situation where, because the cotton leaves are dark green after application, no additional fertilizer is applied, no watering is done, and management is relaxed, causing premature decline and reduced yield.
V. Pay attention not to misuse them. Prevent labels from being removed and lost, using chlormequat chloride as a pesticide and causing losses, or using pesticides as growth regulators so that they have no effect.