Teixeira, I., Botton, M.I., & Enimar, L.A. 2002 Avaliaco de inseticidas visando ao controle de Eurhizococcus brasiliensis (Hempel) (Hemiptera: Margarodidae) em novos plantios de videira. [Insecticide evaluation for Eurhizococcus brasiliensis (Hemiptera: Margarodidae) control on new vineyards.]. Neotropical Entomology 31(3): 457-461.

Notes: The ground pearl, Eurhizococcus brasiliensis (Hempel), is a parthenogenetic univoltine soil scale, which attacks roots of grapes (Vitis sp.) causing plant death. Infested areas became restricted to cultivation of grapes and other temperate fruits. Neonicotinoid insecticides imidacloprid and thiamethoxan were evaluated for soil application seeking new alternatives for pest control on young plants (one year old). Imidacloprid was diluted using one liter of water per plant while thiamethoxan was applied directly to the soil using granular formulation. A single application in November provided a control higher than 80%, similar to the standard compound vamidothion (90 ml/100 L, three times a year). The dose of 0.14 g/plant of imidacloprid and thiamethoxan was enough to protect young plants for one season. These results show the possibility of controlling E. brasiliensis with neonicotinoid insecticides and hence implant new vineyards in infested areas.