What to do with the bamboo insects?
As a Zen plant with great ornamental value, Podocarpus often encounters pests during its maintenance process. This paper focuses on the two typical pests of bamboo locust and scale insect, and provides a comprehensive analysis from identification characteristics to systematic control plans to help bamboo friends scientifically protect the health of green plants. Common pest types of Podocarpus 1. Bamboo locust pest control Bamboo locust is the "number one killer" of Podocarpus. Its larvae are 3- 5 cm long and are greenish green, while the adults turn to yellow-brown. The insect destroys by gnawing bamboo leaves and bamboo shoots. A single female locust can lay more than 200 eggs, and can eat the entire leaf within 3 days of the outbreak period. 2. Scale insect infestation processing White scale insects the size of rice grains often gather on the back of leaves, and the honey dew secreted can cause coal pollution disease. Data shows that in an environment with a temperature of 25 ° C + a humidity of 70%, the insect population density increases by 300% every week, and a hierarchical management strategy is needed. In the four-step physical removal stage of pest management, bamboo locusts are physically removed using a soft bristle brush, and scale insects are wiped leaf by leaf with a 75% alcohol cotton sheet. It is recommended to operate in the early morning. At this time, the activity of the insect body is slow and the removal efficiency is increased by 40%. The pesticide is accurately applied to bamboo locusts. Select 800 times of 90% trichlorfon solution, focusing on spraying the back of the leaves; use 1000 times of 40% methoate emulsifiable concentrate for scale insects. Add 0.1% washing powder to enhance adhesion, optimize environmental management once a week for 3 consecutive weeks to maintain environmental ventilation, and control the air humidity to ≤65% in summer. Spray the leaves with garlic extract (1:10 ratio) every month to form a natural protective layer, biological control and introduce natural enemies such as ladybugs and laceflies, and put 3-5 animals per square meter to establish an ecological protection system. Planting insect repellent plants such as mint and rosemary around bamboo bushes can reduce the recurrence rate of pests by 85% through the three-dimensional protection system of "prevention + management + maintenance." It is recommended to conduct a bamboo pole knocking inspection every month (the echo of healthy bamboo poles is crisp), combined with potassium dihydrogen phosphate foliar fertilizer to enhance resistance, so that the Podocarpa bamboo always maintains its straight and straight Zen charm.