Management Points in Early May
Pest management
1. Cut off the tip of powdery mildew and leaf roller moth, concentrated burning. 2. Scrape rot, rosy ring disease, and rough skin disease. 3. Add Zn fertilizer to the lobular tree and spray 0.1%~0.2% zinc sulfate solution on the tree. 4. Spray calcium fertilizer. 5. Control spraying of 10% imidacloprid WP 2000 times solution to control tumors and jaundice. 6. Control lepidoptera pests such as leaf miners and leaf leaf insects by spraying 25% Diflubenzuron No. 3 Suspension 2000 times solution or BT emulsion. 7. Control spraying of 70% thiophanate-methyl WP wettable powder 1000 times, or 80% carbendazim 1500-2000 dilution, or 10% polyoxorubicin (Polaroid) 1200 times, or 50% fluocinate 1200 times, or 1.5% polyoxin 300 ~ 500 times.
Tree Management - Thinning
Distance method: Take the fruit based on the distance between the remaining fruits. The general type of apple, large fruit is 25 to 30 cm to leave 1 fruit, medium and small fruit is 20 to 25 cm to leave 1 fruit.
Fruit-to-fruit ratio method: Based on the number of new shoots sprouted at the time of fruit thinning, one fruit per 5-8 shoots (including long, medium, and short shoots) according to variety, tree vigor, etc. In the case of better management conditions and robust growth, large fruit such as the Marshals, Fuji and other varieties, shoot-to-fruit ratio of 8:1; medium and small fruit, such as the Golden Crown, Guoguang and other varieties, the shoot-to-fruit ratio is 5: 1.
The amount of fruit left behind is influenced by factors such as variety, age, vigor, and fertilizer and water conditions. It is necessary to be flexible in production according to actual conditions. In general, large fruits have less left, and small fruits have more left. Natural drops are more serious and less likely to fall. Some strong trees stay adequate, and weak trees have less stay. Fertilizer and water conditions can stay longer, and vice versa. In a tree, stay on the strong branch and stay on the weak branch. To do it because of the tree, due to a reasonable load. The big fruit types such as Fuji, Marshal, and Jonah are left with 1 fruit per plant.
Mid-May Management Points
Pest management
1. Scrape rot, rosy ring disease, and rough skin disease. 2. Control red spiders and leaf miners by spraying 30% mothfloxacin 2000 times, or 1.8% zhapoline 4000 times, to cure other pests. 3. Spray calcium fertilizer, iron fertilizer to prevent calcium deficiency and yellow leaf disease. 4. Spray 70% thiophanate-methyl wettable powder 1000 times, or 80% carbendazim 1500-2000 dilution, or 10% polyoxoamphenicol (Polaroid) 1200 times liquid to prevent ring veins and anthrax disease.
Under the tree management
1. Timely irrigation. 2. Cultivated grass.
Tree Management
1. The Marshal is a key ring for the third time. 2. Set the fruit: set the standard short branch red star class, Fuji, etc. by the dry week (cm) squared times 0.2 fruit. 3. Summer cut: remove upright new shoots, too dense branches, competition shooter, and more than twisting the tip. 4. In addition to sprouting trees. 5. Exfoliate the circumcision trees in late April. After uncuffed excision of the excretory materials, use a plastic cloth strip to strip the mouth. 6. For the second circumcision of the young saplings circumcision in late April.
Management Points in Late May
Pest management
1. Scrap cure rot and ringworm disease. 2. Control spraying of 10% imidacloprid wettable powder 2000 times, or 48% of Lost 1000 times. 3. Control lepidoptera pests such as leaf miners and leaf leaf insects, spray 25% diflubenzuron 3x suspension 2000 times solution or BT emulsion, etc. 4. Control fruit and leaf diseases, spray 80% of Dasong M-45 WP 800 times. 5. Spray calcium fertilizer, iron fertilizer to prevent calcium deficiency and yellow leaf disease.
Tree Management
1. The Marshal is a series of key rings carved for the fourth time. 2. For the Marshal and Fuji varieties, fruit bagging after spraying the fruit and fruit: For varieties that are susceptible to fruit rust, bagging should be carried out 10 days after flowering. The sooner the better. Early and mid-maturing varieties can be bagged 10-15 days after flowering; for the new red stars and other physiological heavy fruit varieties in June should be carried out after the physiological fruit drop. Red Fuji and other late-maturing varieties can be set from 15 days after flowering until late June. It is best to finish the plant from early May to the end of May. Bagging should be carried out at 9 to 12 o'clock in the morning and at 3 to 7 o'clock in the afternoon. Do not carry it out in the morning when the dew does not dry, the fruit temperature is low, and the noon light is strong and the fruit temperature is high. After spraying, the liquid cannot be bagged when it is not dry and it is raining. 3. The tree is tied up. 4. Fuji varieties and trees that have not been girdled or engraved in the first half of May. During this period, the first girdling or ring carving will be carried out.
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