High temperature pump applications
The effective components of the tree fruit solution are top brassinolide and gibberellin A4+7. This is a specialized flower and fruit protection agent developed by Yunda Technology over many years, known for its unique efficacy. It was the first to replace traditional gibberellin A3 (commonly known as 920) with GA4+7 (gibberellin A4 and A7), which helps avoid issues such as excessive sugar accumulation and fruit malformation often seen when using 920 alone. The product also enhances the overall quality of fruits through comprehensive regulation.
During spring drought years, especially before and after the beginning of spring, spraying a 1500-fold dilution of the fruit solution across the entire tree, combined with orchard irrigation, can promote continued morphological differentiation of flower buds, support normal growth of new shoots, and ensure both the quantity and quality of flowers—reducing the occurrence of abnormal flowers.
Spraying Jinyun Da-120 once during the flower bud stage yields excellent results: stronger buds, improved pollen germination, better pollination, and reduced early physiological fruit drop. Spraying the same solution at a 1500-fold dilution within one week after flowering can further reduce the first physiological fruit drop. For un-pollinated or unfertilized fruits, the top brassinolide in the solution works synergistically with the gibberellins naturally produced by young fruits, while suppressing abscisic acid production. This "two-pronged approach" keeps abscisic acid levels low, ensuring balanced vegetative growth and maintaining fruit stability.
Applying the whole-tree spray at the start of the Gregorian calendar can significantly reduce the final physiological fruit drop. The mechanism is similar to that used during the first drop period, but here, the role of brassinolide becomes even more critical. It not only improves the fruit-setting ability of the remaining fruits but also enhances their quality.
After the physiological fruit drop, applying Jinyun Da-120 at a 1500-fold dilution continues to improve fruit quality. When combined with proper water management, fertilization, and pest control, the harvest of high-quality sugar oranges is just around the corner.
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