Volatilization of 1,2‐dibromo‐3‐chloropropane (DBCP) from soils

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Abstract
The volatilization of the fumigant 1,2-dibromo-3-chloropropane (DBCP) from soils, as affected by the soil characteristics and application techniques, was studied in a laboratory experiment. The volatilization rate of DBCP applied in water was higher from sandy and silty loam soils than from clay soil. Water added after DBCP application acted as a soil cover, decreasing the volatilization rate. Results obtained with DBCP application in hexane to air-dry soils indicate that adsorption could be an important factor in reducing the volatilization losses. Diffusion coefficients were calculated from the volatilization parameters by using a simplified relationship between volatilization losses and diffusion through soil.