Causes of mango flowering but not fruiting and its control methods

Mango is a kind of fruit that many people like, the market demand is large, the economic benefit is high, so the planting people are also more, many growers often encounter the phenomenon that mango plants only bloom but not bear fruit. What was going on? Let's learn about it together with Xiaobian.

1. The reason why mango only blooms and does not bear fruit

1. Improper management

In the flowering and fruiting period of mango, it is the period when the plant needs the most nutrients. If there is no reasonable combination of fertilizer, the content, type and time of the fertilizer will affect the flowering and fruiting of the fruit tree, resulting in the fruit setting rate underground. The growth strength of the tree body, the management of the two canopy leaves in the early stage, the branches in the shoot control period, and the lack of aging and tidiness of the leaves will have an impact.

2. Climatic factors

In the flowering period and flowering period of mango trees, the weather is good or bad is very critical, because the pollen is extremely sensitive to low temperature weather at this time, and the normal germination of mango pollen will be affected by the influence of low temperature and rainy days, which will reduce the pollination rate of mango and cause poor fruit setting of mango. If there is too much rain at this stage, the pollen will be washed away, and the activity of insects in rainy season will decrease, which will also affect the effective pollination of plants, resulting in poor pollination and reduced fruit setting rate.

3. Impact of diseases and insect pests

Before mango flowering to flowering stage, it is the peak period of various diseases and insect pests, and also the period of most pesticide spraying. At this stage, the diseases easily infected by mango plants include anthracnose, powdery mildew, stalk rot, bacterial angular spot, bituminous coal disease, gum disease, etc., while the most common pests are thrips and flat-billed leafhopper. They will continue to harm the buds and tender plants, and more harm the flowers. The damaged buds will slowly turn black until they wither and tear off. The harmful fruits will also appear spots, affecting the fruit set rate and fruit quality.

II. Control methods

1. Strengthen management

Mango in the early stage to control the application of nitrogen fertilizer, not partial application of nitrogen fertilizer, lest branches and leaves excessive growth, absorb too much nutrients, resulting in low flowering and fruit setting rate. However, excessive growth of branches and leaves will also lead to poor permeability, affecting photosynthesis. When humidity is high, diseases and insect pests will also be caused. At this time, it is necessary to prune in time, cut off dead branches, diseased branches, thin branches, excessive branches, etc., so as to make branches reasonably distributed, increase the accumulation of nutrients in effective branches, facilitate germination and differentiation, and improve fruit setting rate.

2. Water management

Mango flowering in rainy weather, after the rain to shake flowers in time, rain drops and rotten flowers shake off, avoid flower rot, at the same time timely spray chemicals, sterilization, repair wounds, reduce the incidence of flower rot, but also can supplement polysaccharides, polypeptides and other nutrients, strong flowers and flowers.

3. Pest control

After the rain, the dead leaves, diseased flowers and diseased fruits in the garden should be removed in time, so as to reduce the infection source and reduce the base number of germs. Meanwhile, spraying 150-300 times of Liangguo An +500 times of soil fertility +600 times of Wofengsu can repair the wound caused by wind and rain, cut off the invasion route of germs, and supplement high-energy substances for the tree body, which is beneficial to the restoration of tree vigor. When disease occurs, it is necessary to prescribe the right medicine and prevent it in time to avoid further expansion of diseases and insect pests.

The above is the mango only flowering does not bear fruit reasons and control methods introduced, I hope to help you, want to know more about the relevant knowledge, please pay attention to us.