Detailed Explanation of Key Technical Points for Flower and Fruit Management in Mango Orchards
(1) Use of plant growth regulators: When using plant growth regulators, the specified concentration, method of application and timing must be followed, and plant growth regulators that have not been approved, registered and produced by the state should not be used. For plant growth regulators used to control shoots and promote flowering, the recommended concentration is ethephon 200-3...
(1) Use of plant growth regulators:
When using plant growth regulators, the specified concentration, method of application and timing must be followed, and plant growth regulators that have not been approved, registered and produced by the state should not be used.
For plant growth regulators used to control shoots and promote flowering, the recommended concentration is ethephon 200-300 mg/L. For 15% paclobutrazol, apply 6-8 g per sq m of canopy soil, or spray on leaves at 800-1000 mg/L.
For plant growth regulators used to preserve flowers and fruits, the recommended concentrations are: gibberellin 50-100 mg/L, naphthaleneacetic acid 40-50 mg/L.
When plant growth regulators are sprayed on leaves, neutral laundry powder, surfactants, etc. should be added to improve efficacy.
Use of plant growth regulators should be stopped 1 month before harvest.
(2) Pruning and flower and fruit thinning:
For trees with a flowering rate of more than 80% of the terminal shoots, retain inflorescences on 70% of the terminal shoots and remove the remaining inflorescences from the base; for larger inflorescences, cut off 1/3-1/2 of the lateral flower branches from the base.
From after flower drop to the fruit development period, cut off flower branches that do not bear fruit as well as branches and leaves that hinder fruit growth; cut off spring and summer shoots that emerge during the young fruit stage.
Within 15-30 days after flower drop, retain 2-4 fruits per inflorescence, and thin out deformed fruits, diseased and insect-damaged fruits, and excessively dense fruits to reduce the number of empty bags after bagging.