In December, the mango was basically dormant, and began to enter the physiological differentiation of flower buds, mainly in low temperature and dry weather, which is very beneficial to the differentiation of mango flower buds. After picking the branches, the flower buds have a strong ability to re-draw, but because of the low temperature, it is not good for flowering and pollination, and it is difficult to fertilize. Set fruit. Mango management in December is the prerequisite and guarantee for increasing mango production and quality in the coming year. So how is mango managed in December?
1.Twist branches
Twisting of the vigorous branch in the vigorous tree can be performed from the beginning of this month to the middle of this month to promote flower bud differentiation of the branch. Use both hands to pinch the base of the branch to be twisted. The lower finger plays a fixed role. The upper finger twists the branch 180 °, causing its skin and wood to crack and hang or hang down.
2. Qingyuan
Within this month, weeds and litter in the garden can be cleared out of the garden and burned or buried in the soil when turning over the soil to reduce the source of pests and diseases in the following year.
3. The trunk is painted white
In order to prevent pests from laying eggs on the trunk for wintering and reducing the source of disease, the trunk can be whitened at the end of this month. The method is to apply the whitening agent evenly to the base of the trunk or branch.
There are two kinds of whitening agents: one is 10% lime water, and the other is Bordeaux pulp (0.5kg copper sulfate, 3kg lime, 20kg water) at 1: 6: 40. The first formula can be used for young trees and orchards with less disease and pests, and the old formula for diseased old orchards can be used.
4. Do antifreeze treatment
For frost and cold damage, especially in high altitude areas, anti-freezing treatment should be carried out by whitening the trunk, covering with plastic, covering with grass, etc.
5, remove early flowers
If the temperature is high this month, some poorly managed weak trees, old trees or trees with incorrect tipping periods will grow inflorescences prematurely. At this time, when they grow to 5-10cm, the inflorescences will be wiped from the base. , Promote lateral buds to re-differentiate flower buds, can postpone flowering 15-45 days.
Because the flowers formed in the current period basically do not set fruit and produce yield, it is recommended that for a small number of branches that have become flowering trees, no treatment should be performed, and it is more suitable to make a second batch of fruit in the later stage.
6, pest control
In the middle of this month, a pest control was conducted in conjunction with the clearing of the garden. The type of medication depends on the source of the visible insects, with emphasis on the prevention and treatment of scale insects and bacterial horny spot disease.
7.Control water and nitrogen
In the late-maturing area, because the mangoes were not managed by the shoots, the shoots had a larger number of hairpins, and the speed of hairbrushing was relatively fast. Because the temperature conditions in December are still suitable for mango tapping and root activities in the late-growing mango area, if irrigation in this period will cause the root system to absorb water and increase fertilizer, it will easily lead to long shoots or break dormancy, and the phenomenon of "rushing tips" will occur. Therefore, at this stage, water supply should be avoided, and nitrogen fertilizer supply should be controlled to promote the delayed or stopped growth of the germinated shoot tips, stay in a dormant state, and enter the physiological differentiation of flower buds.
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