Common Pests of Saxifraga and Their Control Methods

Common pests of saxifrage: mealybugs

Pest symptoms

Females and larvae cluster on the underside of leaves, sucking the sap. The male insects have wings and can fly.

The leaves that have been sucked by the sucker look like they have spider webs. The leaves are shriveled and dry, with only some veins left, which looks very ugly. Mealybugs have white sticky powder on their bodies, which can contaminate the leaf surface and induce other diseases.

Prevention and treatment methods

When purchasing, introducing, transporting, or giving away Saxifrage, careful inspections must be carried out to prevent the introduction of insects to prevent their spread.

Choose the most suitable potting medium and disinfect it scientifically. For example, composting soil and other organic matter must be fully fermented and sterilized at high temperature or with chemicals to kill insect eggs or reproductive mothers.

During the peak hatching period of nymphs, spray or root irrigate with 1000 to 1500 times dilution of 40% Suposu EC or 700 to 800 times dilution of 25% Aikas EC.

Common pests of saxifrage: whiteflies

Pest symptoms

Adult nymphs suck the juice of leaves, fruits and young branches. The affected leaves develop green yellow-white spots. As the damage worsens, the spots expand into patches, and then the entire leaf turns pale and falls off early. The flavor quality of the affected fruit is reduced, and young fruits often fall off when the damage is serious. Excreting honeydew can induce sooty mold disease.

Prevention and treatment methods

Early stage pests: When whiteflies occur sporadically, start spraying 1500 times diluted 20% cypermethrin wettable powder or 1000 times diluted 25% acaricide emulsifiable concentrate, 3000-4000 times diluted 2.5% pyrethroid emulsifiable concentrate, 2000-3000 times diluted 20% cypermethrin emulsifiable concentrate, 1500 times diluted 10% imidacloprid wettable powder, once every 10 days or so, and carry out prevention and control 2-3 times in a row.

Pests during the growth period: spray 50% Daofengsan EC 1500-2000 times diluted, 80% DDT EC or 40% Dimethoate EC or 50% Phosphamidon EC, 50% Malathion EC, 50%