How to prevent early flowering in mango? These methods are worth mastering
1. The mango leaf-cutting weevil is widely distributed. Adult beetles feed on young mango leaves, causing the leaves to dry up; or the female beetles lay eggs on the young leaves and bite the young leaves off at the base, affecting plant growth. Control methods: ① During the growth period of young shoots, pick up the bitten-off fallen leaves from affected plants once every 3 days, dry them in the sun and burn them to kill the larvae;...
Mango is an evergreen fruit tree that consumes large amounts of water and nutrients. If it encounters long-term dry weather, combined with improper water and fertilizer management, once the accumulated temperature is sufficient, flower bud differentiation will be rapid, and early flowering will occur, making it vulnerable to damage from low-temperature cold and overcast weather; the flowers cannot be pollinated, the fruit-setting rate is low, resulting in reduced yield or total crop failure. So how do you prevent early flowering in mango?I. Pruning branches: After harvesting the fruit, cut off old, weak, damaged, diseased, dense, shaded and crossing branches, and also cut off the remaining fruit stalks, then carry out a thorough orchard cleanup. This can promote the sprouting of new branches and ventilation and light penetration, reduce nutrient consumption and pest and disease damage, and can also delay flower bud sprouting and control early flowering.
II. Apply sufficient fertilizer: Mango flowering and fruiting consume large amounts of nutrients, so after harvesting the fruit, apply heavy fertilizer. The fertilization amount should account for about 80% of the annual total, to meet the needs of restoring growth and expanding the canopy. Mainly nitrogen, phosphorus and potassium, applied in ring-shaped trenches dug along the outer edge of the canopy projection. Apply 40-60 kg each of compost, barnyard manure and farmyard manure per tree, or 7-10 kg of compound fertilizer, and cover with soil after application.
III. Prevent drought damage: Mango dislikes drought and fears waterlogging. This year, severe drought occurred continuously in summer and autumn, flower bud differentiation was rapid, and buds and flowers emerged and bloomed early. To prevent drought damage, plow and loosen the surface soil of the orchard to reduce water loss. The autumn and winter drought lasts a long time, so water thoroughly (irrigate if conditions permit) 1-2 times each month. At the same time, dig drainage and irrigation ditches around the orchard to prevent waterlogging from heavy rain and rainstorms. Build up soil at the base of the fruit trees so that accumulated water drains away quickly. Before winter arrives, spray pesticide 1-2 times to prevent pest and disease damage.
IV. Top grafting to change varieties: For those varieties that grow and develop rapidly under long-term high-temperature weather and are prone to early flowering, adopt top grafting to change varieties. Change the entire tree to excellent late-maturing varieties, so that flowering and pollination are delayed, avoiding the damage of low-temperature cold and rain in early spring.
V. Regulate the flowering period: Remove early-emerged inflorescences so that the tree re-emerges buds and blooms. To a certain extent, this can delay the flowering period and avoid cold and overcast damage. That is, when the inflorescence emerges 8-10 cm, remove the flowers. However, before mid-February, flower removal can only be carried out 1-2 times. If flowers are removed too many times, the flowering vigor will be weak and the pollination ability will be lost.
VI. Chemical flower control: When flower buds appear, spray with 350-fold paclobutrazol solution or 1000-fold ethephon solution, spraying once every 12-15 days, for 2-3 consecutive sprays, to achieve the flower control effect.