Residual Effect of Malathion and Sevin Pesticides on Soil Fertility and Snake Cucumber Growth

Abstract

I acknowledge with gratitude the support, advice and encouragement provided by my supervisor Prof. Mohammed Osman Gafar throughout the project study. Also I would like to thank my friends for their help and support. My sincere thanks are extended to my colleagues and staff of the laboratory at the college for their help, kind gestures and friendly attitude during this study and thank for abdelateaf. And Special thanks warmly go to my brother Ahamed. An experiment was conducted at Shambat Agricultural Farm to study the effect of two pesticides Sevin and Malathion on soil and plant. Cucumber was planted on 2 November, 2012. Sevin and Malathion pesticides were added at different concentrations to evaluate their effect on the plant growth and soil. The measurement taken was plant height (cm), fresh and dry weight (gm), leaf area (cm2), and number of leaves per plant. The results revealed that both Sevin and Malathion Pesticides at all the concentrations dose gave negative effect on height, leaf area, weight and number of leaves per/ plant, compared with the control. Soil pH, total nitrogen %, phosphorus (ppm), soil particles size analysis (sand, silt and clay %), ECe dS/m, CEC cmol (+)kg- 1 and O.C %.The result revealed that both chemicals affected negatively the vegetable growth of Cucumber except the ECe of the saturation extract was increased (0.4dS/m before planting and 0.98dS/m)after planting. However, both chemicals increased soil salinity which in turn affected plant growth and soil yield.