Elm bonsai, as a common choice for indoor and outdoor decoration, is loved by gardening enthusiasts for its beautiful tree shape and easy pruning characteristics. However, it is also prone to pest and disease attacks during maintenance, especially pest infestations. This article will introduce the pest control methods for Elm bonsai in detail to help enthusiasts effectively prevent and control pests and ensure the healthy growth of Elm bonsai.
Know the common pests of Elm BonsaiBefore pest control, it is first necessary to understand the common pests of Elm bonsai, such as spider mites, scale insects, aphids, etc. These pests absorb the sap from Elm leaves, causing them to turn yellow and wither, and in severe cases, even leading to the death of the entire Elm tree.
Physical control methods1. Clean maintenance: Regularly clean the leaves and branches of the Elm bonsai, removing eggs and pests.
2. Prune diseased branches: If diseased branches or branches severely affected by pests are found, prune and destroy them in time to prevent the spread of the disease.
Chemical control methods1. Choose the right insecticide: There are many insecticides available on the market, such as pymetrozine and pyrethroids. When choosing an insecticide, attention should be paid to its safety to avoid harming the Elm.
2. Application method: Dilute the insecticide according to the proportions indicated in the instructions, and spray it evenly on the Elm leaves and branches with a sprayer. Be careful not to spray it directly on the Elm roots when spraying to avoid root burn.
3. Control cycle: Depending on the severity of the pest infestation and the effectiveness of the insecticide, it is generally sprayed once every 7-10 days, with 2-3 consecutive applications.
Biological control methods1. Use natural enemies: Introduce predatory insects such as ladybugs and green lacewings to help control pests.
2. Use biological pesticides: Biological pesticides are relatively safe for Elm bonsai, such as Bacillus thuringiensis and Beauveria bassiana.
Preventive measures1. Maintain ventilation: Keep the Elm bonsai well-ventilated to reduce the occurrence of diseases and pests.
2. Reasonable fertilization: Fertilize properly to avoid over-fertilization, which can lead to excessive growth of Elm and increase the occurrence of diseases and pests.
3. Observe maintenance: Regularly observe the growth of Elm bonsai, and take action in time if pests are found.
Pest control for Elm bonsai requires a comprehensive use of physical, chemical, and biological control methods, while also strengthening daily maintenance to prevent the occurrence of diseases and pests. By using the above methods, you can effectively control the pests of Elm bonsai and ensure its healthy growth.
References:
[1] Zhang Wei, Li Ming. Plant Pest and Disease Control Technology [M]. Beijing: China Agricultural Press, 2018.
[2] Wang Lihua, Liu Qiang. Manual of Bonsai Disease and Pest Control [M]. Beijing: China Forestry Publishing House, 2016.