Author/Authors :
Nisar, Muhammad Shahid University of Agriculture, DG Khan sub campus - College of Agriculture, Pakistan , Ahmed, Sohail University of Agriculture - Department of Agricultural Entomology, Pakistan , Rashid, Abdul University of Agriculture - Office of Research, Innovation and Commercialization, Pakistan , Ahmed, Mian Muhammad University of Agriculture, DG Khan sub campus - College of Agriculture, Pakistan
Abstract :
The present studies were conducted to determine the toxicity and effect on gallery formation in subterranean termites by 5, 10 and 15% aqueous, ethanol and acetone extracts of seeds of Piper nigrum L. at DG Khan, Punjab, Pakistan. Toxicity test consisted of releasing workers of Odontotermes sp. and Microtermes sp. in soil and following death of all workers to find out LT_{50}s. The length of tunnels made in soils treated with all seed extracts were compared with a control treatment. Results revealed that lowest LT_{50} was found in acetone extract. The shortest tunnel length was recorded in ethanol extract after 15 min of releasing workers in treated soils. The discussion is related to suitability of P. nigrum as termiticides for the species mentioned in this paper.
