Pests of Dichondra chinensis and their control

Horseshoe beetle encounters scarab beetles and moths

The leaves of the turf grass of the Chinese horsetail are relatively tender and have a high juice content. They are generally severely attacked by the larvae of beetles, grubs, and the larvae of armyworms. When beetles and armyworms are found on the horsetail, the insects can be controlled by taking advantage of their phototaxis and chemotaxis during the adult emergence period, using black light, poison bait, and poisonous weeds to lure and kill them, thereby reducing their egg-laying capacity. To treat the larvae and grubs of scarab beetles, you can use 1000 times diluted 50% phoxim and spray the lawn of the horsetail. For the armyworms and larvae of noctuid moths, spray 1000 times diluted 40% omethoate for prevention and control. Repeat the spraying once on the second day after spraying for the best effect. You can also consider using the insecticide chlorpyrifos.

Dioscorea paniculata

The grass borer is a serious pest to the lawn of the Chinese knotweed, eating the grass roots and stems, cutting off the plant's water supply, causing the stems and leaves to turn yellow and eventually die. When the grass borer appears in the horsetail, it can be killed with a black light, lured and killed with a sweet and sour liquid, or sprayed with 1000 times diluted 40% Lorsban.

Dioscorea paniculata encounters cutworm

Cutworms are pests that feed on young stems and leaves, preventing the lawn from growing normally. In severe cases, they can cause the death of entire plants. When the Chinese horsetail is attacked by cutworms, it can be sprayed with 50% diazinon emulsifiable concentrate or 25% carbaryl wettable powder.

The sharp-headed locust

The pointed-headed grasshopper mainly chews leaves and tender stems. When the outbreak is serious, all the stems and leaves of the Chinese horsetail will be eaten. The damage is most serious from June to August every year. When the pointed-headed grasshopper harms the horseshoe grass, you can use 0.5 kg of dichlorodiphenyltrichloroethane or DDT added to 500 kg of water to spray it, or you can concentrate manpower to kill it in the morning.