What about the worms of Luohan pine?

Podocarpus, also known as money pine, Chinese fir, is an evergreen coniferous tree, ornamental value is very high, can be used as furniture, appliances, farm tools, etc., but during the planting period, will give birth to various insects, then how to do Podocarpus insects?

1. Red Spider

Disease performance: Podocarpus by red spider damage, leaves fade, chlorophyll is destroyed, the surface appears dense small yellow spots, small yellow spots, and gradually atrophy, yellowing, withered, serious when falling off, losing its ornamental value.

Prevention and control methods: red spiders often hide in branches, leaves of the back or when the film dense place, pull the net hidden, artificial capture is easier.

If chemical agents are used to remove the treatment, 20% dicofol emulsion can be used, 800-1000 times water can be added to make a solution spray, this drug has a good killing effect on adults, nymph and eggs. 50% dichlorvos emulsion can also be added to 1000-1500 times water to make a solution for spraying.

2. Scale insects

Disease performance: damage surface is very wide, sucking stem and leaf juice, resulting in poor plant growth, and even induced coal pollution disease, resulting in large areas of leaf damage. Its high incidence period is earlier than red spider, often in early spring when that has been a large number of breeding.

Prevention and control methods: When the number is small, brush can be used to drive away. In addition, it can also be used to kill 800-1000 times of liquid spray. Furadan mixed with certain amount of culture soil has preventive effect, but the effect is only 3 months.

3. New leaf aphid

The new leaf aphid is a common pest on podocarpus. Its body is reddish brown or reddish purple and oval. It is about 1.3 mm long and 0.6 mm wide, and its ventral tube is truncated and located on a brown cone. cauda papilliform, prominent ventral. Adult and adult aphids swarm on the tender shoots and the back of tender leaves to suck sap, making the tender shoots grow poorly, the leaves become smaller, the leaves are yellow, and the tree is weak. The new leaf aphid of Podocarpus podocarpus overwinters with eggs on branches, and the overwintering eggs hatch into nymph aphids in April of the next year, and gather on new shoots to harm them. The breeding peak period is reached in May and June, and the harm is the most serious. After July, due to high temperature, the population density decreases obviously, and the population rises again after autumn cool. Female aphids and male aphids are produced in October, and they lay eggs after mating, and then overwintering with these eggs.

Control methods: Podocarpus has not yet sprouted in early spring, spray 1-3 degrees of Bomei stone sulfur mixture solution, kill overwintering eggs. In late April, when overwintering eggs are finished and aphids begin to harm, spray 50% aphimicarb WP 600-800 times solution or 25% quick kill 1000-1500 times solution.