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Fruit trees "second flowering" how to prevent?
The annual growth and development cycle of fruit trees typically follows a pattern of spring budding, flowering, fruiting, and then entering dormancy in the fall. However, under certain unusual environmental conditions, some fruit trees may experience an abnormal phenomenon known as "second flowering" in autumn. This occurrence can significantly disrupt the normal growth of the tree and negatively impact the following year’s yield, making it a serious concern for fruit growers.
Why does this second flowering happen? It is primarily due to improper agricultural practices and inadequate management. In regions with clear seasonal changes, such as many parts of China, fruit trees generally follow a predictable cycle: they sprout in spring, flower, bear fruit, and then go dormant after shedding their leaves in late autumn. If any part of this cycle is disrupted—such as through disease, pest infestations, or environmental stress—the tree's growth pattern can become irregular.
For example, if pests or diseases cause premature leaf drop or damage to foliage in the fall, the tree may still receive sufficient sunlight and warmth to trigger new growth. In response, mature shoots and leaf buds that should have gone dormant may begin to regrow, leading to the appearance of flowers and new leaves—what is commonly referred to as "second flowering." This can occur on bare branches, entire trees, or even within a single orchard.
This phenomenon not only consumes valuable nutrients that could have been used for next season’s growth, but also leads to reduced yields and lower quality fruits in the following year. The early blooming of flowers and leaves weakens the tree, making it less productive and more vulnerable to further stress.
The primary causes of "second flowering" include the early loss of leaves due to pests or diseases, poor soil and water conditions, and atypical weather patterns such as unusually warm temperatures in late autumn. To prevent this issue, it is crucial for fruit growers to implement effective post-harvest care. This includes thorough pest and disease control, maintaining proper soil moisture and fertility, and ensuring that leaves remain healthy throughout the growing season. By doing so, farmers can reduce the risk of "second flowering" and maintain the long-term productivity of their orchards.