Mechanism and Method of Applying Whole Tree Fruit in Shatang Tang
The key active ingredient in the fruit protection agent developed by Yunda Technology is a combination of top brassinolide and gibberellin A4+7. This unique formulation has been specifically designed to protect flowers and fruits, offering superior efficacy through years of research. Unlike traditional applications that rely on GA3 (also known as 920), this product uses GA4 and GA7 (collectively referred to as GA4+7) to prevent excessive fruit drop and improve fruit quality. It effectively addresses issues such as fruit malformation and acid reflux caused by overuse of 920 in citrus crops like sugar oranges.
During dry spring seasons, applying a 1500-fold dilution of the fruit protection agent across the entire tree, combined with orchard irrigation, helps ensure proper flower bud differentiation, healthy shoot development, and improved flower quantity and quality—both normal and abnormal flowers are reduced. Spraying Jinyun Da-120 once during the flower bud stage can lead to remarkable results: stronger buds, better pollen germination, efficient pollination, and a significant reduction in the first physiological fruit drop.
Applying the 1500-fold diluted solution within a week after flowering also helps minimize the initial fruit drop, especially in cases where pollination and fertilization are inadequate. The top brassinolide in the formula works synergistically with naturally produced gibberellins in young fruits, while simultaneously suppressing abscisic acid production—an antagonistic effect. This dual action increases gibberellin levels and reduces abscisic acid, ensuring balanced vegetative growth and stable fruit development.
Spraying the whole tree at the start of the Gregorian calendar season significantly reduces the second physiological fruit drop. The protective mechanism is similar to the first phase, but here, brassinolide plays an even more critical role by enhancing fruit-setting ability and improving fruit quality.
After the physiological fruit drop, applying Jinyun Da-120 at a 1500-fold dilution continues to enhance fruit quality. When paired with standard water, fertilizer management, and pest control, this approach ensures a high-quality harvest of sugar oranges is just around the corner.
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