Fruit drop inducement
If the weather is too dry, or if it continuously rains, the photosynthetic function of the leaves will be weakened, which is an important factor causing the fruit drop.
Tree vigor is weak in roots, poor in tree vigor, and lacks in ability to support the roots, especially in the absence of many yellow and magnesium leaves. The photosynthetic nutrients provided by the leaves are limited, and the fruit is not sufficiently nutritious.
In addition, the bacteria induced by cracking and rotting fruit can exacerbate fruit drop.
Precaution
According to the practical experience of a large number of farmers in the citrus area, continuous application of micro-compensation of Bili for 1 to 2 times before turning citrus color helps greatly in preventing and reducing yellow pedicel fruit drop or pre-harvest fruit drop. Even if the tree vigor is better, it is necessary to spray fertilizer in a timely manner, because the micro-filling of Bili can add magnesium and trace elements on a one-time basis, helping to maintain the green health of the leaves, and continuously supplying the nutrients needed for fruit enlargement and color transformation through the photosynthesis source. , reduce the fruit before harvest.
For the orchards with poor tree vigor and few leaves, in addition to spraying micro-filling Bili, it is also recommended to flush the roots with a small amount of 15 kg of calcium + 5 kg of supplementary energy and 200 trees with 50 pounds of water per tree. Calcium supplements the roots and strengthens the tree, which is beneficial to citrus coloring. Can not be sprinkled with fertilizer can be applied to spread the force 2 2 / tree, balance supplement calcium, magnesium, zinc and boron, to promote root tree, reduce fruit drop. In the rainy days, it is recommended to spray pesticides in time to prevent and control pests and diseases and reduce the rot and fruit loss caused by bacteria.
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