What medicine can be used to get rid of fruit tree leaf rollers?

The leaf curling moth of the jujube tree is also called the jujube armyworm. After the jujube armyworm is found on the jujube tree, the larvae are generally killed with deltamethrin EC 1000 3000 times, or 20% pyrethrin 800 1000 times, or 25% larvalurin 1500 2000 times.

A special plant insecticide should be used, sprayed evenly on the leaves of fruit trees. It should not be watered during the medication, otherwise it will have no effect.

1000 times of 90% trichlorfon stock solution can be used to kill the larvae of jujube leaf curl moth, and the liquid is cheap and economical.

What medicine is used for insects in fruit tree leaves There are insects in fruit tree leaves are leaf miners, spraying: imidacloprid + chlorpyramide No. 3, 1500 times each. Now I use dimethoate, which is more stable and long-lasting than the previous dimethoate.

In general, plant insecticides can be selected, which is better, cypermethrin and dimethoate can be sprayed once a week.

Causes and solutions for leaf rolling in fruit trees.

1.Lack of water: There are many factors that cause fruit trees to roll their leaves, especially in summer, when the weather is hot, and plants are very likely to roll their leaves.

Solution: If the plant is dehydrated only due to hot weather, the symptoms can be alleviated by watering the plant more or providing proper shade.

2.Pests: Aphids are the most likely insect pests that cause curling of fruit trees, which tend to gather on the back of the leaves to suck the sap, causing the leaves to curl and shrink.

Solution: For aphids, 10% imidacloprid 2000 times solution or pyrethroid pesticides can be sprayed for control.

3.Potassium deficiency: the leaf edge is scorched, gradually expanding from the lower part of the new shoot to the upper part, scorching occurs on the leaves of old trees from mid-summer to late summer, sometimes the leaves are blue-green, and then the leaf margins are parallel to the main vein curl, fade green, and then burn.

Solution: Spraying potassium dihydrogen phosphate during the growing season, or topdressing potassium sulfate in the soil.

4.Calcium deficiency: The apical young leaves are curled and hooked, and after a few days they become brownish-yellow charred and withered.

Solution: Use calcium preparations GA calcium, Motrin calcium, calcium lactate, etc.

5.Molybdenum deficiency: the leaf veins lose green, or even turn yellow, easy to appear yellow or orange spots of different sizes, the leaves are slender and deformed, the leaf edge is curled upwards into a cup, and the terminal mesophyll falls off and is missing.

Solution: Foliar spray of ammonium molybdate solution.

Hello dear, I am happy to answer your questions for the prevention and control of fruit tree leaf curl disease, the main measures are comprehensive prevention and control measures, including the following methods: 1Remove the strains that are sold or talked about:

For fruit trees that have been infected with leaf curl disease, the diseased plants should be removed and destroyed in time to prevent the spread of the virus in the orchard. 2.Control vectors:

The spread of leaf curl disease in fruit trees mainly relies on mediators, such as aphids, whiteflies, etc. Therefore, effective measures should be taken to control the population of these vectors, such as the use of suitable pesticides or insect traps. 3.

Strengthen tree management: maintain the healthy growth state of fruit trees, enhance their disease resistance, including appropriate fertilization, reasonable pruning, reasonable watering, etc. At the same time, the fallen leaves and diseased residues in the orchard should be cleaned up in time to reduce the breeding and spread of viruses.

4.Use of viral inhibitors: Some viral inhibitors have shown some effectiveness in the prevention and control of leaf curling disease in fruit trees.

For example, some phosphodiester compounds, antioxidants, etc., are used to inhibit the replication and spread of viruses in plants. Please note that when using pesticides, the instructions for use and safe operation procedures of pesticides should be strictly followed, sprayed according to the recommended dosage and timing of use, and pollution to the environment and non-target organisms should be avoided. In the process of fruit tree disease control, it is best to consult a professional plant protection technician or plant pathology expert to obtain the most suitable control measures and agent selection.

Hello dear <>

Fruit tree leaf curling disease is a disease caused by a virus, which is mainly manifested by symptoms such as curling, deformation and discoloration of fruit tree leaves. In response to this disease, you can do the following:1

Prevent the spread of the virus: Fruit tree leaf curl disease is caused by a virus, so it is important to prevent the spread of the virus. Measures such as regular cleaning of the orchard, disinfection of tools, and prevention of insect transmission can be taken.

2.Enhance the disease resistance of fruit trees: The disease resistance of fruit trees can be enhanced through fertilization, spraying of trace elements and other methods, and the occurrence of leaf curling disease of fruit trees can be reduced.

3.Spraying Yaosun Jian: For fruit tree leaf curling disease, you can spray some agents, such as antivirus, Fumeishuang, etc., which can effectively control the occurrence of fruit tree leaf curling disease.

4.Timely**: If the fruit tree has been infected with leaf curling disease, it is necessary to take measures in time**, which can be carried out by cutting off the leaves of the sick bench and spraying pesticides.

In short, for fruit tree leaf curling disease, comprehensive measures should be taken to prevent and treat it, including preventing the spread of viruses, enhancing fruit tree disease resistance, spraying pesticides, etc., so as to effectively control the occurrence of fruit tree leaf curling disease.