Uptake and Translocation of 2-<i>sec</i>-Butylphenyl <i>N</i>-Methylcarbamate (BPMC) in Cucumber and Komatsuna Plants

Abstract

Cucumber (Cucumis sativus L.) and komatsuna (Brassica raga L.) grown in soils applied with BPMC took up BPMC through roots and BPMC was transloaated to other plant portions. In cucumber, greater part of BPMC remained in root portion and the translocation rate to stems, leaves and fruits wasgenerally low. On the other hand, the distribution of BPMC in komatsuna was seemingly uniform. The amounts of BPMC taken up by two crops were different with the formulations of BPMC and the soil types. Uptake of BPMC by the crops was a little higher in fine granule than dust. The crops grown in alluvial soil took up greater amount of BPMC than those grown in volcanic ash soil, and the reason might be attributable to the low organic matter content in the alluvial soil. Rate of disappearance of BPMC in potted soil was faster in dust than fine granule, and BPMC moved from the surface layer to the lower layer of soil. Ratio of soil-bound residues of BPMC was higher in the soil applied with fine granule than dust.