Absorption and translocation of glyphosate in glyphosate-resistant cotton as influenced by application method and growth stage

摘要

The influence of herbicide placement and plant growth stage on the absorption and translocation patterns of 14~C-glyphosate in glyphosate-resistant cotton was investi- gated. Plants at four growth stages were treated with 14C-glyphosate on a 5-cm~2 section of the stem, which simulated a postemergence - directed spray (PDS) appli- cation, or on the newest mature leaf, which simulated a postemergence (POST) application.