Causes of insects in chrysanthemum leaves. Methods for preventing and controlling insects in chrysanthemum leaves. As one of the traditional famous flowers in our country, Chrysanthemum is deeply loved by people. During the growth of chrysanthemum, the appearance of insects in the leaves has caused a headache for many flower friends. Why do chrysanthemum leaves have insects? This article will help you solve this mystery and provide effective prevention and control methods. Reasons why there are worms in chrysanthemum leaves 1. Chrysanthemum varieties: Different varieties of chrysanthemum have different resistance to pests and diseases, and some varieties are vulnerable to insect attacks.
2. Environmental factors: The humidity, temperature, light and other conditions in the growth environment of chrysanthemum have a great impact on the occurrence of pests and diseases. For example, too high humidity and suitable temperature are conducive to the reproduction of small insects.
3. Improper fertilization: Excessive application of nitrogen fertilizer will cause chrysanthemum leaves to grow too vigorously, reduce resistance, and be easily attacked by insects.
4. Untimely pruning: Untimely pruning of chrysanthemums may easily lead to the breeding of pests and diseases.
5. Infection of pests and diseases: During the growth process, if chrysanthemums are adjacent to plants with serious pests and diseases, they are easily infected. Methods to prevent and control small insects in chrysanthemum leaves 1. Choose chrysanthemum varieties that are resistant to insect pests: When purchasing chrysanthemums, choose varieties with strong insect resistance.
2. Control environmental factors: Maintain good ventilation, light transmission and drainage in the chrysanthemum growth environment, and avoid excessive humidity.
3. Reasonable fertilization: Reasonably apply nitrogen, phosphorus, potassium and other fertilizers according to the growth needs of chrysanthemums to avoid excessive application of nitrogen fertilizer.
4. Timely pruning: Regularly prune chrysanthemums to remove sick and weak branches and withered leaves to reduce the breeding opportunities of pests and diseases.
5. Use of pesticides to control: During the growth process of chrysanthemum, when pests and diseases are discovered, pesticides should be used in time to control them. Several pesticides are recommended as follows: (1) Imidacloprid: It has contact killing, stomach poisoning and fumigating effects, and has a good control effect on various pests of chrysanthemum.
(2) Beta-cypermethrin: It has contact killing, stomach poisoning, fumigating and penetrating effects, and has a good control effect on various pests of chrysanthemum.
(3) Abamectin: It has contact killing, gastric toxicity and systemic effects, and has good control effect on various pests of chrysanthemum.
6. Biological control: Use natural enemies, insects, microorganisms and other biological control to control pests and diseases and reduce the use of chemical pesticides.
There are many reasons for the existence of insects in chrysanthemum leaves, including factors such as variety, environment, fertilization, pruning, etc. In response to these problems, corresponding prevention and control measures can effectively reduce the occurrence of chrysanthemum pests and diseases. I hope this article will help you.