Evaluation of different plant products against rice weevil Sitophilus oryzae on paddy

Abstract

The experiment was carried out during the year 2018-19 at the Biological control Laboratory and P.G. Research Laboratory, Department of Agricultural Entomology, N. M. College of Agriculture, Navsari Agricultural University, Navsari.Pooled data on the effect of botanicals on seed damage by Sitophilus oryzae showed that the neem leaf powder 5 per cent (2.47%), custard apple leaf powder 5 per cent (5.24%) and nilgiri leaf powder 5 per cent (6.99%) were found most effective treatments against rice weevil as it recorded less seed damage. While, the significant minimum weight loss was observed in the seed treated with neem leaf powder at 5 per cent (0.68%) followed by custard apple leaf powder 5 per cent (2.16%) and nilgiri leaf powder 5 per cent (4.22%). The significant highest mean per cent mortality was observed in neem leaf powder (87.08%) and it was followed by custard apple leaf powder (81.25%) and nilgiri leaf powder (61.25%).