If one of your Agaves die from weevils, DON’T use its surviving pups in your landscape. East Africa Agricultural and Forestry Journal, 35(3):278-285. Snout weevils are beetles about ½ inch (12 mm) in … Eventually, the plant falls over and dies. In outdoor landscapes, add-ing copious amounts (up to 25%) of pumice will improve drainage and soil structure. If you feel the need to control them, you can use the same recommendations as for controlling mealy bugs. Control of insect pests in crop plants and stored food grains using plant saponins: A review. The control of the sisal weevil … 4) Weevils. ... beetles, weevils, leafhoppers, worms and moths. Weevils. The recommended treatment is to remove any yuccas that are infected. A close relative of the agave weevil attacks yucca as well as agave plants. Plant bugs ( Caulotops and other species) are small insects that occasionally build up in large numbers and damage agave plants by feeding on leaves, resulting in light yellow scars or spots. Yucca weevils can only be controlled by keeping the plant in its optimal conditions of dry soil, full sun and good air flow. The leaves begin to turn yellow and die, and a putrid smell emanates from the infected trunk. Mary and Gary Irish had a good suggestion in their outstanding book, Agave, Yuccas and Related Plants: A Gardeners Guide (2000, Timber Press). Curculionidae, Coleoptera) in sisal in Tanzania. IV-Field trials with insecticides in bulbil nurseries. Agave Snout Weevil (Scyphophorus acupunctatus) ... and yucca successfully in heavy clay soils. The agave snout weevil is also a serious pest where blue agave is grown commercially for tequila and in foreign countries where agaves have been introduced as landscape plants. Instead, try to locate pups or bulbils from an Agave that successfully flowered and may have had some genetic resistance to weevils and likely passed that The product may be … The white grub-like larvae tunnel under the bark which can girdle and therefore kill the plant and also tunnel in the tip killing the growing plant. These are best applied on the lower trunk of the plants and around the base of the plant to kill the weevils as they climb. Control - Many materials are registered and effective at controlling thrips. BioAdvanced Tree & Shrub Protect & Feed is unfortunately not formulated to control Yucca and/or Agave weevils. Hopkinson D; Materu MEA, 1970c. Sandy soils should be avoided because they will drain very The Yucca Weevil (Scyphophorus acupunctatus) mainly attacks the cane of the yucca plant. Symptoms - Damage by the `Yucca Weevil', Scyphophrus acupunctatus, is most extensive in the cane. Control of Root Weevils on Plants. This insect bores in and opens the trunk to bacterial infection. However, we do offer a spray product called BioAdvanced 3 in 1 Insect Disease & Mite Control that will control any type of weevil. Thrips are tiny, skinny insects that feed on yucca leaves, causing them to curl. Adult root weevils can be controlled with sprays of several kinds of pyrethroid insecticides such as permethrin, bifenthrin, cyfluthrin, or cyhalothrin. Control of agave snout weevil is difficult, and infestations can be prevented by maintaining healthy plants and destroying infested plants. A similar species also colonizes yuccas. Control mealybugs by treating the plant with insecticidal soap. In a healthy plant, thrips won't do too much damage. The control of the sisal weevil (Scyphophorus interstitialis Gyll. On plants extensive in the cane and yucca successfully in heavy clay soils, and infestations can be by... 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