T/WLCIA 3-2025 Active Group standards

T/WLCIA 3-2025 Wusheng Daya Citrus Flower and Fruit Management Technical Regulations

T/WLCIA 3-2025

Publish Date: 2025-01-02 Implement Date: 2025-01-02 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/WLCIA 3-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2025-01-02

Implement Date: 2025-01-02

Scope

Scope: This document specifies the key technical points for the management of flowers and fruits of Wusheng Daya citrus trees. This document is applicable to the management of flower and fruit management techniques for Wusheng Daya citrus trees; Main technical content: 4.1.1 For fruit trees with few flowers or no flowering, control the application of nitrogen fertilizer, and increase the application of phosphorus-rich fertilizer in the early stage of bud differentiation. 4.1.2 Moderate water control, downward pruning, branch rubbing, and root pruning can be carried out after the autumn shoots mature to alleviate growth vigor. 4.1.3 For vigorous trees, spray regulators 1-3 times during the physiological bud differentiation period. 4.1.4 For trees with many fruits this year, conduct appropriate fruit thinning and apply sufficient autumn and winter fertilizers; for trees with few fruits this year, prune them moderately. 4.2.1 For fruit trees with few fruits, shorten some flower-bearing branches during winter pruning to reduce the number of flowers next year. 4.2.2 During the bud differentiation stage from September to December, control the premature and excessive flowering of young trees and the excessive flowering of fruiting trees by spraying gibberellic acid (100 mg/L–200 mg/L) twice or three times. 4.2.3 For trees with excessive flowering, shorten flower branches before budburst to remove excessive and dense flower buds. 4.2.4 Remove deformed flowers, diseased and pest-infested flowers, or shake off flowers appropriately. 4.2.5 To improve flower quality during the bud differentiation stage, spray liquid boron fertilizer combined with kinetin once. Fruit retention: Generally, there is no need for fruit retention for Daya citrus trees. Under special circumstances, appropriate spraying of boron fertilizer, potassium dihydrogen phosphate, or fruit retention regulators can be used during flower drop and early fruit stages. Specific fruit retention t