The two year old pomelo orange seedlings have fallen leaves. Can a tree trunk survive?

The seedlings of the second year have lost their leaves, but the trunk is crisp and can survive, as long as the trunk is good.

Hello, as long as it is managed properly, it can survive, the reason for defoliation is insufficient nutrition, just apply more fertilizer.

The navel orange seedlings planted in Gannan can generally survive in half a month, and after surviving, it is required to apply water-soluble fertilizer and high nitrogen type once every half month, with thin manure water with Yanwo biological fungicide, and can also be applied to each plant under the tree tray after rain, and loosen the disc after application, so as to facilitate root absorption. After August, it is not advisable to apply water-soluble fertilizer and high nitrogen type to avoid pumping late autumn shoots.

In the second year, top dressing 3 times, and reapply spring, summer and autumn fertilizer. Spring fertilizer in early February, summer fertilizer in early to mid-May, and autumn fertilizer in mid to late July, respectively, each plant was applied with water-soluble fertilizer. After the autumn shoots are old and mature, expand the hole and reapply the base fertilizer, and you can use the root rooting agent and the Yanwo biological fungus agent.

In the third year, when young trees begin to bear fruit, phosphorus, potassium fertilizer and organic fertilizer should be applied to meet the needs of flower and fruit development. In early February, each plant was applied with germination fertilizer and Yanwo water-soluble fertilizer, and at the same time, from April to early August, topdressing was carried out every 20 days or so, mainly Yanwo potassium dihydrogen phosphate and Yanwo boron fertilizer. In early July, the plant applied strong fruit fertilizer to each plant with water-soluble fertilizer, and in autumn, the water-soluble fertilizer was applied to Yanwo, and gradually cultivated and managed according to the conventional fertilization method of adult trees.

Navel orange seedling grafting technology.

1. Wipe the shoots, when the new shoots are 2 3 cm long, select and leave 1 strong and tender shoots, and erase the rest of the tender shoots, and then wipe the tender shoots once every 10 days or so; After the tender (spring) shoots are ripe, when the buds are 3 5 cm long, select the new shoots (early summer shoots) with a strong apex, erase the rest of the tender shoots, and wipe the shoots once every 7 10 days until the shoots are mature in early summer; In early summer, when the shoots sprout and draw the shoots 3 5 cm long, select the apex strong shoots (late summer shoots), erase the rest of the young shoots, and wipe the shoots once every 7 10 days until the shoots are mature in late summer; In late summer, when the shoots sprout and shoot 3 5 cm long, at about 40 cm from the ground, select 3 sturdy shoots with the wrong growth position, erase the rest of the shoots, and then wipe the shoots once every 7 10 days until the 3 autumn shoots mature. In order to ensure that the shoots are thick and mature, the late autumn shoots are erased and not retained.

2. Remove the germination and tillering, and regularly erase the germination and tillering of the rootstock part to save nutrients.

3. Weeding, manual weeding in April to prevent injury to young and tender shoots when weeding with tools. In midsummer, weeds can be eradicated in combination with cultivated loose soil, and in autumn, glyphosate can be used to kill weeds (sprinkler head with plastic cover to prevent the liquid from spilling on the leaves).

4. Fertilization, sprinkle an appropriate amount of Yanwo water-soluble fertilizer in the spring shoot growth period, and sprinkle Yanwo water-soluble fertilizer in the summer shoot growth period and autumn shoot growth period at the same time, mixed with Yanwo biological agent, which will allow better absorption of nutrients. Fertilization should be carried out in combination with irrigation water when the weather is dry, so as to facilitate the dissolution and absorption of fertilizer.

5. Drought prevention and flood resistance, the dry season is not conducive to the germination of summer shoots or autumn shoots, and irrigation should be strengthened; During the rainy season, the water is deep and lasts for a long time, which will damage the root system, so drainage should be strengthened.

6. Disease prevention and insect control, strengthen the prevention and control of red spiders, leaf miners, aphids, butterflies, Spodoptera litura, and locusts; At the same time, the prevention and treatment of canker disease and anthrax should be strengthened.

Summary. 1. Fertilize young trees.

Juvenile grapefruit trees are mainly organic nitrogen fertilizers, such as human manure, well-rotted column fertilizer, cake fertilizer, combined with appropriate amounts of urea and other chemical fertilizers. Fertilization of young trees is mainly used to promote spring, summer and autumn shoots, accelerate the formation of canopy, and pay attention to regulating vegetative growth and reproductive growth, and enhance drought and frost resistance.

What is the reason for the grafting of old pomelo trees and new varieties of long-leaved oranges?

Hello, what is the reason for the grafting of old pomelo trees and new varieties of long-leaved orange buds and fine yellow?

There are several reasons for this. Iron deficiency. Because it is more acidic, it should be watered with water diluted with ferrous sulfate, once a month. 2.Lack of fertilizer digging. Failure to fertilize for a long time leads to hunger. 3.Not seeing the sun for a long time.

Do you need to fertilize just grafting? How much fertilizer to apply and what type of fertilizer is good.

Hello wanted.

1. Fertilizing young grapefruit trees is mainly based on organic nitrogen fertilizer, such as human manure, well-rotted column fertilizer, cake fertilizer, combined with an appropriate amount of urea and other hunger-reducing hidden fertilizers. Fertilization of young trees is mainly used to promote spring, summer and autumn shoots, accelerate the formation of canopy, and pay attention to regulating vegetative growth and reproductive growth, and enhance drought and frost resistance.

Summary. Orange and grapefruit grafting There are many advantages to grafting a grapefruit tree with an orange tree. Both pomelo trees and orange trees belong to the genus Citrus of the Rutaceae family, and grafting orange trees with grapefruit trees can make the orange trees and grapefruit tree rootstocks perfectly combined and return to normal growth as soon as possible.

And after grafting, the grafting interface needs to be waterproofed to avoid bacterial infection of the grafting interface. 1. Provide the right amount of water After grafting, you need to provide the right amount of water for the plant to help the plant recover its growth as soon as possible, and you need to pay attention to watering when providing water for the plant.

Precautions for grafting orange and grapefruit When grafting, it is necessary to ensure that the section of the inward side of the two can be tightly fitted together to avoid.

What is the reason for the grafting of old pomelo trees and new varieties of long-leaved oranges?

Hello, it's my honor to answer your questions, it will take a little time to sort out the answers, please be patient

Hello! But the new grapefruit tree grafted with long-leaved orange buds is a little stronger.

Orange and grapefruit grafting There are many advantages to grafting a grapefruit tree with an orange tree. Both pomelo trees and orange trees belong to the genus Citrus of the Rutaceae family, and grafting orange trees with grapefruit trees can make the orange trees and grapefruit tree rootstocks perfectly combined and return to normal growth as soon as possible. And after grafting, the grafting interface needs to be waterproofed to avoid bacteria infection at the grafting interface.

1. Provide an appropriate amount of water After grafting, it is necessary to provide an appropriate amount of water for the plant to help the plant recover its growth as soon as possible, and pay attention to watering 2Precautions for grafting orange and grapefruit When grafting, it is necessary to ensure that the section of the inward side of the two can be tightly attached to the celery to avoid it.