Imazapyr herbicide efficacy on floating macrophyte control and ecotoxicology for non-target organisms

Planta Daninha

C. Cruz¹  A.f. Silva¹  N.s. Shiogiri¹  N. Garlich¹  R.a. Pitelli¹ 

关键词: acute toxicology;    biomarkers;    aquatic plants management;    toxicidade aguda;    bioindicação;    manejo de plantas aquáticas;   

DOI  :  10.1590/S0100-83582015000100012

来源: SciELO

【 摘 要 】

the aims of this study were to determine imazapyr efficacy for floating macrophyte control and ecotoxicology for non-target organisms. For the floating macrophyte control efficacy tests were used the doses of 0,5; 1,0; 2,0; 2,5; 3,0; 3,5 and 4,0 L ha-1 and a control with 10 replicates. The acute toxicology for non-target organisms was estimated by lethal concentration 50% (LC50 and EC50). The floating macrophyte control efficacy was over 90%. Imazapyr was classified as moderately toxic for the following biomarkers: L. minor, H. eques, B. rerio, P. caudimaculatus, P. canaliculata, and P. mesopotamicus and lightly toxic for A. caroliniana. Thus, imazapyr herbicide is a tool with great potential to be used on floating macrophyte control (E. crassipes, P. stratiotes e S. molesta) in Brazil and this practice can be evaluated by the use of application biomarkers.

【 授权许可】

CC BY   
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