Molybdenum mixed with glyphosate and alone via foliar spray in no-tillage common bean grown on corn stover

• Published in: Revista Ceres 2014-02, Vol.61 (1), p.62-69
• Main Authors: Gessimar Nunes Camelo, Geraldo Antonio de Andrade Araújo, Renildes Lucio Ferreira Fontes, Luiz Antonio dos Santos Dias, José Eustáquio de Souza Carneiro, Jamir de Moraes de Lisboa Júnior, José Damato Neto
• Format: Article
• Language: English
• Subjects: adubação molíbdica; herbicida; Phaseolus vulgaris L
• ISSN: 2177-3491
• DOI: 10.1590/S0034-737X2014000100008

The effect of molybdenum (Mo) on common bean grown in desiccated corn stover in a no-tillage system was evaluated under two application modes: Mo mixed with the desiccant glyphosate and Mo direct spray to the bean leaves. The treatments (four replicates) were assigned to a completely randomized block design in a split-plot arrangement with the application of Mo (0, 100, 200, 400 and 800 g ha-1) mixed with glyphosate in the main plots and Mo foliar spray (0 and 100 g ha-1) in the sub-plots. The field experiments were carried out in 2009 and 2010 in the municipality of Coimbra, Minas Gerais State, with the common bean cultivar Ouro Vermelho. Mo mixed with glyphosate had neither an effect on common bean yield nor on the Mo and N contents in leaves, however it increased the Mo and N contents in seeds. Application of Mo via foliar spray increased Mo content in leaves and Mo and N contents in seeds. The reapplication of molybdenum with glyphosate for desiccation in subsequent crops caused a cumulative effect of Mo content in bean seeds.