RELEASE OF BOUND ~(14)C-CHLORSULFURON AND/OR ITS DEGRADED PRODUCTS AND THE COMPONENTS OF RELEASED PRODUCTS A METHODOLOGICAL RESEARCH ON RESIDUAL CHLORSULFURON OF MAIZE RADICLE LENGTH BY SOIL BIOASSAY Genetic Transformation of Protoplasts from Peucedanum terebinthaceum and Regeneration of Herbicide resistant Plantlets STUDY ON THE RELEASE OF 14 C CHLORSULFURON BOUND RESIDUES The mechanism of protective action of R-28725 against the phytotoxicity of chlorsulfuron on maize STUDIES ON ~ (14 ) C-EXTRACTABLE RESIDUE, ~ (14 ) C-BOUND RESIDUE AND MINERALIZATION OF ~ 14 C-LABELED CHLORSULFURON IN SOILS