What are the main summer management measures for apple trees?
What are the main management tasks for apple trees in summer? Please guide. The main summer management tasks for apple trees include the following: 1. Fertilizer management. To meet the nutrient needs of apple trees in summer, topdressing should be done in time. Generally, in hot and rainy seasons, fertilizer should be applied in small amounts but multiple times. In summer, topdressing is also needed in the late stage of fruit growth. For young fruit trees, apply Dimijia fertilizer 0.2-0.5 kg per tree; for trees in full fruit stage, apply Dimijia fertilizer 1-1.5 kg per tree.
What are the main management tasks for apple trees in summer? Please guide.
The main summer management tasks for apple trees include the following:
1. Fertilizer management
To meet the nutrient needs of apple trees in summer, topdressing should be done in time. Generally, in hot and rainy seasons, fertilizer should be applied in small amounts but multiple times. In summer, topdressing is also needed in the late stage of fruit growth. For young fruit trees, apply Dimijia fertilizer 0.2-0.5 kg per tree; for trees in full fruit stage, apply Dimijia fertilizer 1-1.5 kg per tree.
2. Water management
The period when apple trees are most sensitive to water is the rapid shoot growth period from May to June. Therefore, based on the actual local conditions in Hancheng this year, irrigation should be carried out during the following periods: bud break, flowering, spring shoot growth, fruit enlargement, and late fruit enlargement.
3. Summer pruning
Summer pruning mainly compensates for the shortcomings of winter pruning, using the laws of nutrient and transport accumulation and consumption in the tree during the growing season to adjust the relationship between growth and fruiting.
a. Summer management. For young trees, in early to mid-June, when the tips of branches at all levels have grown to 40-45 cm, pinch the tips and remove 1-3 leaves.
b. Opening the angle. For scaffold branches with upright angles, bend the scaffold branches in May to June to open the angle.
c. Twisting shoots. In early to mid-June, when half of the lower-middle part of the new shoot has become woody, twist and injure the base of the new shoot to promote earlier flower bud formation.
d. Girdling. To better promote flower bud formation. In early to mid-May to June, girdle vigorous inner branches or auxiliary branches. The girdling width is 3-5 mm, narrower for thin branches and wider for thick ones.
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