Abstract

Fertiactyl^® is a foliar fertilizer with the potential to minimize the phytotoxicity effects caused by glyphosate drift in eucalyptus plants. As the interactions of the glyphosate and Fertiactyl^® in tank mix on the plant behavior are not yet known, the objective was to evaluate the absorption and translocation of ¹⁴C-glyphosate, applied isolated and mixed in tank with Fertiactyl^®, in young eucalyptus plants (clone I-144, Eucalyptus urophylla x E. grandis). The addition of Fertiactyl^® to the mixture of ¹⁴C-glyphosate reduced the absorption by 94.3% in relation to the total absorbed at the end of the evaluation compared to plants treated only with ¹⁴C-glyphosate, i.e., Fertiactyl^® protected the eucalyptus plants of the glyphosate intoxication by drift. The translocation rates from the treated leaves to the rest of the shoots and roots were low (<2% of the total recovered) in both treatments, suggest that restricted translocation is a mechanism of natural tolerance to glyphosate in plants of clone I-144. It is concluded that Fertiactyl^®, mixed in the solution with glyphosate, protects young eucalyptus plants against glyphosate drift by reducing the amount of herbicide absorbed.

 抽象的

Fertiactyl ^®是一种叶面肥料，可最大程度地减少草甘膦漂移对桉树植物造成的植物毒性影响。由于草甘膦和 Fertiactyl ^®在罐中混合物中对植物行为的相互作用尚不清楚，因此目的是评估¹⁴ C-草甘膦（单独施用并与 Fertiactyl ^®混合在罐中）在幼年桉树中的吸收和易位（克隆 I-144，尾叶桉x E. grandis ）。与仅用¹⁴ C-草甘膦处理的植物相比，在¹⁴ C-草甘膦混合物中添加 Fertiactyl ^®后，相对于评估结束时的总吸收量，吸收量减少了 94.3%，即 Fertiactyl ^®保护了桉树植物漂移引起的草甘膦中毒。从处理过的叶子到其余芽和根的易位率较低（<2 id=35>® 与草甘膦混合在溶液中，通过减少吸收的除草剂量来保护幼小的桉树免受草甘膦漂移。