-
What are the control methods for iron deficiency chlorosis in jujube trees?
Distribution and harm: Yellow leaf disease occurs in many jujube-growing areas, among which iron deficiency chlorosis is relatively common and is a physiological disease. It can cause tree decline, affect jujube yield, and in severe cases can cause tree death. 1. Symptoms: Mild iron deficiency
-
Four common grafting methods for jujube tree cultivation
1) Single-bud bark grafting: From May to September, when the rootstock begins to slip bark, grafting can be done every day. Choose sour jujube rootstock under 5 years old with a diameter of about 1.5 cm; use lignified, disease-free and pest-free growing shoots as scions. 2) Subcutaneous grafting: From spring when the rootstock
-
Detailed Explanation of Summer Pruning Methods and Techniques for Jujube Trees
Traditional jujube orchard management is relatively extensive, and summer pruning is generally not carried out, resulting in disordered tree shape and small angles of scaffold branches. Although the tree is tall, ventilation and light penetration are poor, and yield is low. Summer pruning of jujube trees not only facilitates ventilation and light penetration, but also regulates tree nutrition and increases fruit set
-
What are some practical methods to increase the fruit-setting rate of jujube trees?
For jujube trees to be high-yielding, fruit setting is the most critical. Management depends on technique; for fruit setting, find the patterns. The flowering period must be seized firmly, and the secrets must be kept firmly in mind. 1. Flowering period The flowering period of jujube trees is relatively long, generally 35 days, that is, from May 25 to June 30. The flowering period is divided into the early flowering stage, full flowering stage, and late flowering stage. Around June 8
-
Control Methods for Green Leaf Bug in Jujube Tree Cultivation
The green leaf bug, also known as the alfalfa plant bug, can damage a variety of economic crops such as fruit trees, vegetables, cotton, and alfalfa. In 2001, the green leaf bug occurred on a large scale in the Cangzhou jujube region and severely damaged the fruit, which was rare in history. According to a survey from June 16 to 18 (the peak period of the second generation of the green leaf bug)
-
Detailed Explanation of Control Methods for Apple Alternaria Leaf Spot
Apple alternaria leaf spot is an important disease of apple. This disease can cause early defoliation of apple trees, weaken tree vigor, and not only affect the yield of the current year, but also affect flower bud formation and reduce the yield of the following year. 1. Symptoms It mainly damages young leaves, especially young leaves within 20d. Onset
-
What are the control methods for apple boron deficiency?
Apple boron deficiency is a physiological disorder caused by boron deficiency, and in the past two years it has shown a worsening trend on early-maturing apple varieties such as American No. 8 and Gala, and late-maturing varieties such as Qinguan. 1. Symptoms: The main symptoms on the fruit can be divided into three types: dry spot type, corky type and rusty spot
-
What are the control methods for apple Phytophthora fruit rot?
This spring, the temperature in my area was lower than usual and there was more rain than usual, causing severe outbreaks of apple Phytophthora fruit rot. Apple Phytophthora fruit rot, also known as apple Phytophthora disease, can harm apple fruit; the skin of affected fruit first looks as if scalded by hot water, then turns brown, and the flesh rots. It can also attack the tree
-
What are the control methods for the mango green stinging caterpillar?
1. Taxonomic status The mango green stinging caterpillar, also known as the brown-edged green stinging caterpillar [Parasa consocia Walker], belongs taxonomically to the order Lepidoptera, family Limacodidae. 2. Hosts and damage characteristics Its hosts are relatively widespread, damaging mango, banana, citrus, peach, plum, plum, persimmon, Chinese chestnut, cherry, apple, pear
-
Control Methods for Mango Sooty Mold and Algal Leaf Spot
(1) Mango sooty mold: 1. Symptoms: This disease mainly occurs on leaves and fruit. A layer of black fuzzy material covers the surface of leaves and fruit, resembling soot, hence the name sooty mold. In severe cases, the entire leaf and fruit are covered by mycelium (soot). This type of
条件筛选