Tolerance of cowpea cultivars to pre-emergence application of sulfentrazone
AUTOR(ES)
Ikeda, Fernanda Satie; Azevedo, Rebeca Conceição; Poltronieri, Fernando; Olibone, Ana Paula Encide; Cavalieri, Sidnei Douglas; Costa, Wanderson Bertotti da
FONTE
Rev. Ceres
DATA DE PUBLICAÇÃO
2021-02
RESUMO
ABSTRACT Improved methods of weed control are required to support expansion of large-scale cowpea cultivation in mid-west Brazil. With the aim of testing our hypothesis that the tolerance of cowpea cultivars to sulfentrazone is dose- and genotype-dependent, we assessed the effects of increasing doses (0, 250, 500 and 1,000 g ha-1 of sulfentrazone) on the cultivars BRS Imponente, BRS Novaera, BRS Tumucumaque and BRS Itaim. The phytotoxic effects of sulfentrazone varied according to the dose of herbicide applied, although the symptoms were mild and only observable at the initial stages of development and at the highest dose tested. No statistically significant interactions were detected between cultivars and doses, and there were no significant differences between doses regarding population density, plant height, yield components and grain yield. Our results demonstrate that sulfentrazone is highly selective and can be applied to the studied cultivars without affecting growth or yield.
Documentos Relacionados
- The use of pre-emergence herbicides in cassava decreases the need of manual weeding
- Efeito residual de herbicidas aplicados em pré-emergência em diferentes condições de restrição hídrica no solo na cultura da cana-de-açúcar
- Purification and Partial Characterization of a Dehydrin Involved in Chilling Tolerance during Seedling Emergence of Cowpea1
- Identification of cowpea genotypes for drought tolerance.
- Identification of cowpea genotypes for drought tolerance.