Guirado, N., Ambrosano, E.J., Arévalo, R.A., Rossi, F., Mendes, P.C.D., & Ambrosano, G.M.B. 2003 Controle da cochonilha escama-farinha em citros com o uso de óleos em pulverização. [Control of snow scale in citrus tree with the use of oil in pulverization.].. Laranja 24(2): 329-335.

Notes: The citrus snow scale Unaspis citri is a specific pest of citrus. This pest causes yield losses by sucking the plant sap and by the toxic action of its prick; in cases of intense attack, it provokes trunk bark scaling causing the death of the plant. The control of this pest was has been carried out by the application of insecticides mixed with mineral oil. The efficacy of neem oil extracted from seeds of Azadirachta indica, applied alone or in combination with mineral oil (Triona) to control this scale was determined. The treatments comprised 0.5 or 1% mineral oil and 0.5 or 1% neem oil. Treatment based on 1% mineral oil + 1% vegetal oil neem was the most effective.