Mechanism of participation of molybdenum and cobalt in nitrogen fixation in legumes (Source: Agroestrategias consultores).Rhizobia are bacteria present in the root nodules of leguminous plants, they do not independently fix nitrogen in the same way as the plant does, so it is the interaction between the two that causes nitrogen fixation. These bacteria need oxygen to produce nitrogen fixation, but on the other hand, nitrogenase, the enzyme that catalyses the main reaction of nitrogen fixation, is inactivated by oxygen. Leghemoglobin is a regulatory protein present in the nodules that controls the oxygen concentration levels inside the root nodule (Garcia, 2011). Cobalt is involved in the structure of vitamin B12, which is necessary for the synthesis of leghemoglobin, thus indirectly determining optimal nodule activity in the plant (Golo et al., 2009). Increasing Co. supply increases rhizobial growth, nitrogen fixation, coenzyme B12 content and leghemoglobin formation in the rhizobia. Soil acidity is directly involved in the solubility and absorption of cobalt by the plant. As both elements (Mo and Co) are directly linked to nitrogen fixation and absorption, their deficiency has a strong influence on crop yields. As part of our portfolio of solutions, we are looking for a formulation that not only provides molybdenum and cobalt in a nutritional form, but also, thanks to the presence of bioelicitor molecules, strengthens the plant and therefore improves the absorption of these nutrients. BIOKELAT® CO-MO is a biostimulant complexed with soluble cobalt and molybdenum that is rapidly absorbed and translocated by seeds and plant tissue, especially indicated as a biological nitrogen fixer and as a fruit ripening retardant.
- Zambrano Zambrano, J. G., & Jurado Olivo, E. A. (2020). Efecto de aplicaciones foliares de molibdeno sobre el uso eficiente de nitrógeno y rendimiento en maíz amarillo duro (Bachelor's thesis, Calceta: ESPAM MFL).
- García, S. C. (2011). Bacterias simbióticas fijadoras de nitrógeno. Cuadernos del Tomás, (3), 173-186.
- Golo, A. L., Kappes, C., Carvalho, M. A. C. D., & Yamashita, O. M. (2009). Qualidade das sementes de soja com a aplicação de diferentes doses de molibdênio e cobalto. Revista Brasileira de Sementes, 31(1), 40-49.
- Urbano Terrón, P. (1992). Tratado de fitotecnia general. Mundi-Prensa Libros.