Insecticide For Vine Weevil

Many gardeners will be aware of the infestation of vine weevil they can cause, but may not realize the damage that this pest can do. A pest is an organism that causes losses or damages to a crop. Vine Weevil is a type of beetle that affects the succulent and vascular tissues in grape vines. The name “vine weevil” is used for two different species of beetles: Otiorhynchus sulcatus found in Europe and O. glabratus from North America.

Insecticide For Vine Weevil

Black vine weevils, Otiorhynchus sulcatus (F.) (Coleoptera: Curculionidae), are serious pests of container- and field-grown nursery crops. Management programs usually target the larval stage in container-grown plants and the adults in field-grown plants. We tested several new systemic insecticides for efficacy against black vine weevil in container-grown Sedum spp. and field-grown Taxus spp. In 2006 and 2007, clothianidin, dinotefuran, and chlorantraniliprole were applied as surface drenches to containerized Sedum plants, and suppression of larval densities and adult feeding were evaluated. Sedum leaf bioassays were used to further examine the influence of clothianidin, dinotefuran, and chlorantraniliprole on adult feeding. In 2006, pots were infested with adult black vine weevil 1 d after treating, and in 2007 pots were infested 1 or 43 d after treating. All three insecticides significantly reduced the numbers of larvae in 2006, but not in 2007, because of low numbers of larvae in the untreated control plants. Dinotefuran and clothianidin reduced feeding by adult black vine weevil on containerized Sedum plants, resulting in more blossoms, fewer damaged leaves, and a lower percentage of leaves damaged compared with control plants. In bioassays with detached leaves, all three insecticides reduced feeding compared with control plants. Efficacy and timing of clothianidin, imidacloprid, and acephate soil drenches and imidacloprid and acephate soil injections were evaluated for black vine weevil control over a 1-yr period in field-grown Taxus plants. All insecticide treatments significantly reduced the numbers of larvae in field-grown Taxus plants compared with control plants; and all but the spring acephate drench improved the appearance of the Taxus (foliar rating) plants compared with untreated plants. All of the tested insecticides showed potential for preventing infestations of black vine weevil larvae and reducing feeding by the adults in ornamental plants.

The vine weevil is an insect that feeds on and damages vines, which can cause significant damage to grapes and other plants. The best way to control vine weevils is to use an insecticide that is specifically designed for them.

Insecticides are chemicals that kill insects, and there are several different kinds of insecticides. Some insecticides are designed only for certain types of insects, while others will work on any type of bug.

The most common type of insecticide used against the vine weevil is an organophosphate. Organophosphates are usually sprayed on the plant, but they can also be applied in liquid form or as granules that are sprinkled onto the soil around the plant.

Organophosphate insecticides work by interfering with an insect’s nervous system, causing paralysis and eventually death if enough of it enters their bloodstreams through ingestion or physical contact with treated surfaces like leaves and stems.”

Insecticide For Vine Weevil

The vine weevil is a destructive pest of grapes, table and raisin grapes, and other fruits. It is also a pest of ornamental plants, such as fruit trees and shrubs. The adult weevil is about 3/8 inch long, black with a light-colored stripe down its back. The larvae are legless and white to cream colored with brown heads. Eggs are laid singly on leaves or stems near developing buds or flowers. The larvae feed inside the bud or flower where they can cause extensive damage before they pupate in the soil beneath the plant.

The adult weevil emerges from under ground in early spring when temperatures reach 50 degrees F (10 degrees C). They remain active until late fall when temperatures drop below 50 degrees F (10 degrees C). Adult weevils feed on foliage during daylight hours and mate soon after emerging from the soil. Females lay eggs singly on leaves or stems near developing buds or flowers where larvae hatch in about seven days. Larvae feed inside buds or flowers for about one week then burrow underground where they spend about two months feeding on roots before pupating in soil beneath host plants.

List Of Insecticide For Vine Weevil