SciELO - Scientific Electronic Library Online

 
vol.87Causes of equine abortion, stillbirth, and perinatal mortality in BrazilInfluence of Meloidogyne incognita race 1 on the development of clones of Coffea canephora, variety “Jequitibá Incaper 8122” author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Arquivos do Instituto Biológico

Print version ISSN 0020-3653On-line version ISSN 1808-1657

Abstract

SILVA, André Felipe Moreira et al. Herbicide management in glyphosate and sulfonylurea-tolerant soybeans. Arq. Inst. Biol. [online]. 2020, vol.87, e0372019.  Epub Oct 19, 2020. ISSN 1808-1657.  https://doi.org/10.1590/1808-1657000372019.

There is little information on the efficacy and selectivity of sulfonylureas, isolated and in association with glyphosate, in glyphosate and sulfonylurea-tolerant soybeans. Thus, the present study aims to evaluate the efficacy of weed control and selectivity of sulfonylureas, isolated and in association with glyphosate, at post-emergence (V4) of RR2/STS soybean. The experiments were conducted in the in areas located in Piracicaba City, São Paulo State (SP), Brazil (experiment I) and Palotina City, Paraná State (PR), Brazil (experiment II). Treatments were composed of application of the herbicides sulfometuron, chlorimuron, halosulfuron, ethoxysulfuron and glyphosate, isolated and in association, in the BMX Garra RR2/STS cultivar. Experiment I was conducted focusing on the evaluation of the efficacy of weed control; whereas experiment II focused mainly on the evaluation of herbicide selectivity. The experimental design was the randomized complete block, with four replications. Crop injury, weed control, and variables related to agronomic performance were evaluated. Data were submitted to analysis of variance, and the means of the treatments were compared with the Tukey test. Sulfonylureas in association with glyphosate were effective in weed control and selective for the BMX Garra RR2/STS soybean cultivar. The sulfometuron + chlorimuron + glyphosate association presented phytotoxic potential for the BMX Garra RR2/STS cultivar.

Keywords : Glycine max; STS; weed control; herbicides selectivity; agronomic performance.

        · abstract in Portuguese     · text in English     · English ( pdf )