Adubação foliar com níquel e molibdênio no feijoeiro comum cv. Ouro Vermelho

Abstract

Foliar fertilization with nickel and molybdenum in common bean cv. 'Ouro Vermelho'The objective of this work was to assess the effect of foliar application with nickel (Ni) and molybdenum (Mo) on components of yield, growth and mineral composition of common bean cv. 'Ouro Vermelho'. The experiment was arranged in a randomized block design with four replications in a 5 x 2factorial scheme consisted of rates of Ni (0, 15, 30, ), and Mo (0 and 80 g ha -1) applied in the leaves 25 days after seeding. The elements were applied in the form of Ni chloride hexahydrate and ammonium molybdate. The foliar application of Ni did not change the foliar contents of N, P, K, Fe, Mo and Ni, but increased the content of N, Ni and the crude protein in the seed. The application of Mo decreased the foliar contents of P, Fe and Ni, but increased the foliar content of Mo and the content of N, Mo and crude protein in the seed. It was found that the foliar application of Ni and Mo did not affect the seed weight, the number of beans per pod, the number of pod per plant and the dry weight of the root system. The application of Mo increased in 21.62% the number of nodules.

Chickpea production and soil chemical attributes after phosphorus and molybdenum fertilization

“…Such results indicate greater mineral nutritional balance with molybdenum in cultivation of chickpea, after fertilization, especially since it is a nutrient responsible for an increase in activity of the enzymes nitrogenase and nitrate reductase, which are involved in biological fixation and assimilation of N, increasing the production of photoassimilates and the accumulation of shoot biomass. In the edible bean crop, leaf application of molybdenum also had a positive effect on shoot dry matter and productivity, which can be attributed to greater enzyme activity that strengthens nitrate assimilation by plants (Nascimento et al, 2009;Lopes et al, 2014;Lopes et al, 2016).…”

Alternativas na fertilização de feijão visando a reduzir a aplicação de N-ureia1

“…O molibdênio é considerado elemento essencial para as plantas, por ser componente das enzimas nitrato redutase e nitrogenase (Lopes et al 2014). Existem evidências de que o molibdênio gera incrementos na produtividade e na nodulação do feijão e de outras culturas (Rocha et al 2011, Rossi et al 2012, Lopes et al 2014.…”

<b>Split application of molybdic fertilizer at the reproductive stage of common bean increases the molybdenum content in seed

“…Thus, yield can be enhanced up to 300% compared with common bean plants that were fertilized neither with Mo nor with an N side dressing (Amane, Vieira, Novais, & Araújo, 1999). Aside from these benefits, common bean seeds harvested from plants fertilized with Mo are heavier (Araújo, Araújo, Rocha, & Carneiro, 2009) and exhibit better quality (Leite, Araújo, Miranda, Vieira, & Pires, 2009) as well as greater protein concentration (Lopes et al, 2014 Despite the advantages of using Mo fertilizer on the common bean, many farmers have no access to this technology, either because they are not familiar with it or because there is no molybdic fertilizer available locally. One low-cost strategy to solve this problem would be to provide farmers with Mo-rich seeds.…”