Technique of grafting and propagation of mango trees

Mango is the main fruit tree in our country, having both economic value and shady landscape value. The demand for this plant is still great.
Here, I would like to introduce farmers to mango grafting techniques for your reference.

Making a rootstock nursery: Choose sandy soil, favorable irrigation. Plow and smooth the land. Clear weeds, combine into beds 1m wide, 20cm high, furrows 25-30cm wide. Seeds are obtained from local varieties of mangoes, preferably with the seeds. Remove the outer bark and peel off the seed coat. Sow each seed in turn on the bed surface 2-3cm apart, then dredge the soil in the trench to cover the seeds, about 3cm thick. Finally, make the canopy of the canopy to cover the sun and rain for each nursery bed and water it regularly to keep it moist. About 20-30 days later, depending on the weather, the seeds germinate and remove the plastic net covering the bed. When the tree is about 20cm tall, the buds on the top turn green, proceed to the throne immediately (uproot each plant and plant it in the potting medium). Mango is a multi-embryonic tree, 1 seed is sown for 3-5 seedlings. So it is necessary to take the throne in order, old, hard, strong trees take the throne first, young, weak and soft trees take the throne later. Note: As soon as the tree’s buds have just turned green (old locs), don’t let the tree grow a second time to take the throne. Pull the plant onto the pot gently, avoiding breaking the roots. Peeled seeds can be purchased from specialized mango seed establishments in the South, to sow seeds for the rapid multiplication of large numbers of seedlings. Newly born mango orchard. Photo: H. Tien. Electing a rootstock tree: Choose a 12 x 14 black poly bag with a drainage hole at the bottom. The potting medium consists of small soil, mixed with micro-organic fertilizer, quantitative, 1m3 of soil + 120-150kg of microbial organic fertilizer. Close the growing medium 2cm from the mouth of the pot, gently pluck each rootstock planted in the middle of the pot, then cover the pot with soil to cover the roots, then arrange each pot next to each other on a high, drained bed. Fertilize, water to keep moisture and prevent pests for the nursery, until the tree is about 1m tall, then proceed to transplant. Mango seed garden and vegetative sowing beds for grafting. Photo: H.Tien. Choose a hybrid: Depending on market demand or seed production contract with partners, to conduct grafting from Australian, Thai, 4-season or Yen Chau mango varieties, etc. The mother plant is free from pests and diseases, with good fruit and good quality. And only use grafted eyes on branches that grow across the canopy downwards, do not take branches, branches, and branches that grow loosely to water the canopy. Seedlings are collected, need to be cut into segments/sections with 3-4 leaf nodes/sleeping eyes. And also take only the branches of the same color as the cake. Do not take branches that are too old. It is best to take the old bud, after grafting, the seed will sprout quickly. Note: After the cuttings are cut, they need to be tied into bundles, with the roots and tops in the same direction, then wrapped in a damp cotton cloth, stored in a cool place, to gradually graft in 1-2 days. Mango trees after grafting. Photo: H.Tien. Joint technique: It is best to apply the technique of grafting branches. The season to conduct, should start from February-March or July-November of the lunar calendar. 25-30 days before transplanting, it is necessary to increase fertilizing for healthy, resinous and well-functioning rootstocks, increasing the compatibility between the grafted eyes and the rootstock. How to combine: On the rootstock, cut off the top to the point where the stem has a cake color (about 40cm long), but need to leave some leaves for photosynthesis. After using a specialized knife to cut the bevel from the root up, open a grafted mouth with a length of 2.5-3.0cm, a wide cutting angle of 25-30 degrees. On the base of the seedling, also cut open a similar graft, but in the opposite direction and the angle of the cut is 65-60 degrees wide. Apply the grafts of the grafted branch and the rootstock to each other, both stretch and combine the twisted nylon strip like a rope and wrap 5-6 times tightly around the graft, finally flatten the grafted nylon strip. , cover the entire stem and graft, so that rain and air do not penetrate inside. After transplanting about 20-30 days depending on the season, the seed eyes will sprout. Care of seedlings after grafting: About 2 months after grafting, the sprouts are 15-25 long, the buds have turned green, can be released from the garden. During this time, it is necessary to water enough moisture, fertilize NPK balance, thoroughly remove the wild sprouts that grow outside the graft. Timely monitoring and control of some pests and diseases such as anthracnose, leaf spot, mango planthopper.