Abstract

Field trials were conducted for the management of whitefly in the cassava variety CO2 with environment – farmer friendly botanicals during 2006-2007 and 2007-2008 at farmer’s holdings of Attur Taluk, Salem District. Pooled data revealed that application of sweetflag rhizome Acorus calamus 10 D @ 25 kg/ha and NSKE 5% at 15 days interval recorded significant reduction in whitefly population from 7 to 1 per leaf on fifth day after treatment. This treatment recorded the lowest mosaic incidence of 9.10% with a tuber yield of 15.5 t/ha and benefit cost ratio of 2.80 compared to the untreated control which recorded 7 adults per leaf with a tuber yield of 11.92 t/ha

Keywords: Cassava, botanicals, Whitefly management