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Revista de la Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo

On-line version ISSN 1853-8665

Abstract

PAGNONCELLI JR., Fortunato De Bortolli et al. Volunteer soybean (Glycine max) interference in bean (Phaseolus vulgaris) crops: ethoxysulfuron and halosulfuron critical level of damage and selectivity. Rev. Fac. Cienc. Agrar., Univ. Nac. Cuyo [online]. 2023, vol.55, n.2, pp.108-119. ISSN 1853-8665.

This study aimed to determine the negative impact of volunteer soybean plants on bean crop yield and the tolerance of bean genotypes to the herbicides ethoxysulfuron and halosulfuron. To determine the impact of volunteer soybean plants on bean crops, a field experiment was developed, with sub-sub-plots, and four replications. The main plots contained two bean cultivars, while the sub-plots received two soybean sowing times (0 and 7 days after the beans had been sown), while the sub-sub-plots contained five soybean plant densities (0, 5, 10, 20, and 40 plants m -2). The tolerance of the bean genotypes was evaluated with two experiments in a completely randomized design with three replications. They were arranged in a 28 x 3 factorial design (bean genotypes x herbicide doses). Each soybean plant per m 2 reduced bean crop yield by 4%. The recommended doses of ethoxysulfuorn and halosulfuorn resulted in tolerance levels above 70% for all the studied bean genotypes.

Keywords : Competitive interference; Volunteer soybean; Tolerance; Herbicides.

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