Ravindra Kr. Sharma, O.P. Singh, Randhir Kumar & S.N.P. Singh
Entomology Research Laboratory,
B.R.A.B.U., Muzaffarpur-842001 (India)
Received 07th Dec. 2008, Revised 10th Feb. 2009
Abstract : A plant product Eichhornia leaf powder showed remarkable effect on the mortality, survival and growth of R. dominica in stored rice. To find the effect of Eichhronia leaf powder, on the larval development of R. dominica larvae were picked up after carefully breaking the grain with help of a soft brush. Ten Larvae were transferred to the glass tube of 6′ x 2′ sizes. Four doses (0. 5 g, 1g, 1.5g and 2 g) of leaf powder was used for such treatment. Simultaneously three replicates un-treated grain (rice) was established as control. All experiments were carried out on equal degree of ventilation. The observation on larval development was quite effective in reducing the number of larvae and delayed emergence.