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Selectivity of nicosulfuron isolated or in tank mixture to glyphosate and sulfonylurea tolerant soybean

 

André Felipe Moreira Silva1*, Alfredo Junior Paiola Albrecht2, Vitor Wilson Damiao1, Ana Ligia Giraldeli1, Lucas Rafael de Marco1, Henrique Fabrício Placido1, Leandro Paiola Albrecht2, Ricardo Victoria Filho1

 

1 Department of Crop Science, University of Sao Paulo – “Luiz de Queiroz” College of Agriculture, Av. Pádua Dias, 11 – Agronomia, 13418–900 Piracicaba, Brazil

2 Department of Agronomic Sciences, Federal University of Paraná, Paraná, Brazil

Received: January 2, 2018

Accepted: May 29, 2018

*Corresponding address:

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Abstract

The aim of the present work was to evaluate the selectivity of nicosulfuron, alone and in combinations, applied in post-emergence (V4) of glyphosate and sulfonylurea tolerant (RR/STS) soybean. The experiments were conducted in 2015/16 and 2016/17, in Piracicaba – state of S�o Paulo (SP). In 2016/17, the experiment was also conducted in Palotina – state of Paraná (PR). The experiment was a randomized block design, with four repetitions and 16 treatments, with combinations of nicosulfuron, glyphosate, chlorimuron, sulfometuron and cloransulam, applied alone or in tank mixture. Crop injury and variables related to agronomic performance were evaluated. Data were subjected to analysis of variance and treatment means were compared by the Tukey test. The results obtained are significant in the positioning of herbicides in RR/STS soybean, since in the five experiments, all the treatments were selective, except for glyphosate + sulfometuron which reduced the yield of a cultivar (CD 2630 RR/STS) in the 2015/16 season.

 

 

Key words: ALS inhibitors, chlorimuron, cloransulam, Glycine max, glyphosate, herbicidetolerant crops, nicosulfuron, sulfometuron, tank mixture

 
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