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What are the key cultivation techniques for young pomegranate trees?
Pomegranates like sunlight, tolerate drought and poor soil, bear fruit early, and are easy to manage, making them an important economic tree species for mountain development. During the young stage, the following cultivation measures should be carried out well: 1. Select good varieties and strong seedlings. 1. Choose superior varieties for planting. Pomegranates can be divided into three categories: sweet, sour, and sweet-sour. Unless there are special needs, cultivation should focus mainly on sweet pomegranates...
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Key Technical Points for High-Yield Fertilization Management of Pear Trees
About one month before pear fruit ripens, the growth rate accelerates, which is called the fruit expansion stage. Topdressing at this time can improve photosynthetic efficiency, promote nutrient accumulation, and benefit fruit expansion and flower bud differentiation. This topdressing can both increase the yield of the current year and lay the foundation for fruiting in the following year. 525 Shandong Fruit Network The fertilization period is generally at the fruit...
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Detailed Explanation of Early Spring Management Techniques for Pear Trees
1. Dig planting holes or planting trenches. ① For pear orchards with colored varieties spaced more than 3 m apart, planting holes can be dug; centering on the planting hole, dig a circular or square planting pit 1 m deep and 1 m wide, placing the topsoil and subsoil separately on either side of the hole. ② For pear orchards with spacing below 2 m, planting trenches must be dug, with a trench depth of 1 m, ...
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Key Points of Simplified Pruning Technique for Pear Trees Trained to a Modified Central Leader Form
For pear trees trained to a modified central leader form, the trunk height is 60-70 cm, the tree height is 3.5 m, and 4-5 larger scaffold branches are borne on the middle and lower parts of the central leader. The spacing between scaffold branches is about 20 cm. The basal angle of the scaffold branches is 60 degrees. The waist angle is 30-50 degrees. The tip angle is upright; the scaffold branches extend in a single axis. On them are borne small and medium fruiting shoots or fruiting branch groups; the ratio of scaffold branch to trunk is controlled...
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Correct Fertilization Methods and Technical Key Points for Pear Trees
I. Fertilizer amount. Generally speaking, producing 100 kg of pear fruit requires 0.47 kg of pure nitrogen, 0.23 kg of pure phosphorus, and 0.48 kg of pure potassium, with a nitrogen, phosphorus, and potassium ratio of 1:0.5:1. If calculated at a yield of 2500 kg of pears per mu, then each mu requires 11.75 kg of nitrogen, 5.75 kg of phosphorus, and 12 kg of potassium. In actual production, it can be based on...
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What is the difference between pruning methods for pear trees and apple trees
Post-bloom management of pear trees is a critical period in the whole year's management. Whether the comprehensive management measures during this period are appropriate directly affects the fruit set rate and fruit quality. The key points of pear tree management during this period are: 1. Pollination Pear flowers generally open after 8 o'clock in the morning. Flowers that open on the same day can be pollinated, and pollination is best 1 to 2 days after the flowers open...
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Control Methods for Pear Aphid Pests on Pear Trees
Pear aphid, also known as pear two-branched aphid or pear leaf-curling aphid, commonly called "greasy bug," occurs in pear-growing areas throughout the country and is one of the major pests of pear trees. When damage is severe, it causes early defoliation, affecting both the current year's yield and flower bud differentiation. This insect belongs to the order Homoptera, family Aphididae. 1. Damage symptoms: Adults and nymphs gather in colonies on buds, leaves, and tender shoots to suck...
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What are the control methods for potassium deficiency in pear trees
Villagers reported that in a pear orchard in a mountain village, some pear tree branches were found to have shortened internodes, smaller leaves that were yellow-green in color, with leaf margins curling upward, browning, and scorching; in severe cases, the entire tree's leaves were like this, resembling fire damage, and it was even more severe on trees in poor, thin soil with exposed roots, affecting tree vigor and yield. Many fruit growers could not figure out...
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What species of aphids harm pear trees?
The aphids that harm pear trees are mainly 3 species: the pear two-tailed aphid, the pear yellow powdery aphid, and the Chinese pear original-tail aphid. These 3 aphids harm only pear trees; the two-tailed aphid and the yellow powdery aphid occur commonly and severely, while the original-tail aphid rarely occurs and causes lighter damage. Their morphological differences are as follows: (1) Pear two-tailed aphid: ① The wingless viviparous female aphid is 2 mm long, green or dark green...
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Pest and Disease Control Methods for Pear Trees Before Bagging in Early Spring
The period before and after bud break in early spring is when diseases and pests begin their activity, and once the pear orchard is bagged, spraying becomes considerably more difficult. Therefore, pest and disease control before bagging is the key to pest and disease management in bagged pear orchards. During this period, the focus should be on strengthening control of the pear psylla (Psylla pyrisuga), pear aphid, and red spider mite, among others. (1) Strengthen soil, fertilizer, and water...
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