Effect of Folimat (800) (Organophosphate) and Icarose pesticides on Soil Fertility and Radish Growth

Abstract

Abstract Afield experiment was carried out to study the effect of two pesticides (Folimat and Icaros) on growth of radish plant and on agricultural soil. The experiment was conducted during November 2014- January 2015 at the Farm of the College of Agricultural Studies Shambat. Complete randomized design with three replicates was used in this material experiment. Three treatments were used for each of the two pesticides via control, recommended dose (1.92kg/ha) and 50%higher than the excessive dose (2.88kg/ha) for Folimat, but for Icaros 249.2 ml/ha (recommended dose) and 371.8 ml/ha (excessive dose) in addition to control to evaluate their effect on plant and soil. The measurements were taken on leaf area, root length, fresh weight and dry weight of radish plant. Soil samples were collected before sowing at depth 0- 30cm for analysis. Chemical measurements are total nitrogen %, phosphorus ppm, pH, ECe ds/m, soluble cations (Ca, Mg, Na, K) mg/L and soluble anions (CO3, HCO3, Cl, CaCO3) mg/L. The two pesticides applied one month after planting. The result showed that both chemicals affected positively radish growth at the recommended dose, but negatively at the excessive dose. Both pesticides reduced the measured soil characteristics.