Pests and diseases often severely weaken the tree, and the leaves fall off early. The fruit surface affects the quality of the fruit after being damaged by pests and diseases. In recent years, fruit farmers have adopted bagging techniques, but improper bagging can cause many diseases. Therefore, how to bag and ensure the quality of the bagged apple is one of the keys to fruit yield.
First, the first time before germination to flowering
In the spring season, the spring shoots grow very fast, and the germs are most likely to invade the young shoots. As the temperature rises, powdery mildew, root rot and various aphids and mites begin to move. The diseased shoots should be cut off in time, and 10% imidacloprid WP can be sprayed to control insects such as cotton aphid and mites. You can spray the "tree general" + Bordeaux liquid in the whole garden to kill the winter pests and insects and keep warm.
Second, the flowering period is best without medicine
Apple flowering period is more sensitive to pesticides, and it is generally impossible to spray chemical agents during flowering period to avoid phytotoxicity. In order to control the falling flowers and fruit, the production advocates artificial bee, increase the pollination rate and promote the results.
Third, after the flower medication
For pests and diseases that may cause harm during flowering, such as apple powdery mildew, flower rot, mildew, scale insects, and mites, timely measures should be taken after flowering. 80% tebuconazole wettable powder can be used to control most high-grade fungal diseases such as leaf spot, black spot and anthracnose; for insects such as scale insects and mites, 40% omethoate can be used for prevention and control.
Fourth, spray before bagging
Spraying before bagging is a critical period. At this time, the young fruit is depilated, and a large number of wounds are produced after the fluff falls off, which brings opportunities for the invasion of anthracnose, ring disease and other pathogens. Therefore, 1 to 2 days before bagging, the whole garden will spray the fungicide and insecticide once to prevent pests such as rotten fruit disease, cotton bollworm and cockroaches. The medicament includes 70% methyl thiophanate 800 times solution, 12% high osmosis killing emulsifiable concentrate and the like. Do not use organic phosphorus and Bordeaux mixture to prevent fruit rust.
5. After spraying the bag, spray the leaf
After bagging, the leaves should be carefully protected to make the fruit large, high quality and colorful. Early defoliation, powdery mildew, red-and-white spider, aphid, and leaf miner are the main enemies that endanger the leaves. Therefore, after bagging, spray "fruit and fruit" to + foliar fertilizer + fungicide + insecticide to prevent The threat of pests and diseases, supplementing nutrition and promoting fruit enlargement.
Sixth, after taking the bag
Many fruit growers have a habit of thinking that it is not necessary to carry out fruit protection after picking up the bag, which is the most easily overlooked period. After picking up the bag, the fruit is exposed, and the fruit grows on the tree for 20 to 30 days. The pathogen will invade the wound caused by the slight friction between the branches or leaves and the fruit, causing pests and diseases on the fruit surface. Should pay close attention to the time to spray "new high fat film" + insecticide + fungicide + foliar fertilizer, disease prevention and pest control, reduce the occurrence of bitter pox disease, prevent cracking fruit, protect the fruit color bright.
Seven, after the fruit picking
With the end of fruit harvesting, the leaves fall off, the fruit trees begin to enter dormancy, and the pests are also looking for wintering places for wintering, and this is also the weakest link in their life history. At this time, the work of Qingyuan cannot be relaxed. For apple rot disease, ring rot disease, ulcer disease and other branches and diseases, after the disease spots are scraped off, apply "protection tree generals" to seal and disinfect. The litter, the fruit and the fruit in the orchard are treated in a concentrated manner, and then the “tree guard general†+ stone sulphur mixture is sprayed once, and the anti-freeze is kept warm so that the fruit trees can survive the winter.
In short, in the whole year of fruit tree management, each period of medication is critical, and one of the links is not well grasped, and the management of the next link is very laborious. Therefore, fruit farmers should strengthen all aspects of bagging apple management, improve fruit commodity, and buy a good price. (Yunnan Agricultural University Plant Protection College Li Ting)
First, the first time before germination to flowering
In the spring season, the spring shoots grow very fast, and the germs are most likely to invade the young shoots. As the temperature rises, powdery mildew, root rot and various aphids and mites begin to move. The diseased shoots should be cut off in time, and 10% imidacloprid WP can be sprayed to control insects such as cotton aphid and mites. You can spray the "tree general" + Bordeaux liquid in the whole garden to kill the winter pests and insects and keep warm.
Second, the flowering period is best without medicine
Apple flowering period is more sensitive to pesticides, and it is generally impossible to spray chemical agents during flowering period to avoid phytotoxicity. In order to control the falling flowers and fruit, the production advocates artificial bee, increase the pollination rate and promote the results.
Third, after the flower medication
For pests and diseases that may cause harm during flowering, such as apple powdery mildew, flower rot, mildew, scale insects, and mites, timely measures should be taken after flowering. 80% tebuconazole wettable powder can be used to control most high-grade fungal diseases such as leaf spot, black spot and anthracnose; for insects such as scale insects and mites, 40% omethoate can be used for prevention and control.
Fourth, spray before bagging
Spraying before bagging is a critical period. At this time, the young fruit is depilated, and a large number of wounds are produced after the fluff falls off, which brings opportunities for the invasion of anthracnose, ring disease and other pathogens. Therefore, 1 to 2 days before bagging, the whole garden will spray the fungicide and insecticide once to prevent pests such as rotten fruit disease, cotton bollworm and cockroaches. The medicament includes 70% methyl thiophanate 800 times solution, 12% high osmosis killing emulsifiable concentrate and the like. Do not use organic phosphorus and Bordeaux mixture to prevent fruit rust.
5. After spraying the bag, spray the leaf
After bagging, the leaves should be carefully protected to make the fruit large, high quality and colorful. Early defoliation, powdery mildew, red-and-white spider, aphid, and leaf miner are the main enemies that endanger the leaves. Therefore, after bagging, spray "fruit and fruit" to + foliar fertilizer + fungicide + insecticide to prevent The threat of pests and diseases, supplementing nutrition and promoting fruit enlargement.
Sixth, after taking the bag
Many fruit growers have a habit of thinking that it is not necessary to carry out fruit protection after picking up the bag, which is the most easily overlooked period. After picking up the bag, the fruit is exposed, and the fruit grows on the tree for 20 to 30 days. The pathogen will invade the wound caused by the slight friction between the branches or leaves and the fruit, causing pests and diseases on the fruit surface. Should pay close attention to the time to spray "new high fat film" + insecticide + fungicide + foliar fertilizer, disease prevention and pest control, reduce the occurrence of bitter pox disease, prevent cracking fruit, protect the fruit color bright.
Seven, after the fruit picking
With the end of fruit harvesting, the leaves fall off, the fruit trees begin to enter dormancy, and the pests are also looking for wintering places for wintering, and this is also the weakest link in their life history. At this time, the work of Qingyuan cannot be relaxed. For apple rot disease, ring rot disease, ulcer disease and other branches and diseases, after the disease spots are scraped off, apply "protection tree generals" to seal and disinfect. The litter, the fruit and the fruit in the orchard are treated in a concentrated manner, and then the “tree guard general†+ stone sulphur mixture is sprayed once, and the anti-freeze is kept warm so that the fruit trees can survive the winter.
In short, in the whole year of fruit tree management, each period of medication is critical, and one of the links is not well grasped, and the management of the next link is very laborious. Therefore, fruit farmers should strengthen all aspects of bagging apple management, improve fruit commodity, and buy a good price. (Yunnan Agricultural University Plant Protection College Li Ting)
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