Efficiency and assimilation of nitrogen in bean plants through foliar application of zinc and molybdenum nano fertilizer

Abstract

Fertilization with nanoparticles offers alternatives to improve the efficiency of nutrient absorption in a sustainable way in crops. The objective of this work was to study the influence of foliar application of zinc-molybdenum nanofertilizer (Nano ZnMo) on nitrogen (N) use efficiency (NUE), as well as on yield parameters and N assimilation in green bean plants cv. “Strike”. Three doses of Nano ZnMo (0, 4 and 8 ppm) were applied foliar in combination with four doses of N in the form of NH4NO3 in nutrient solution (0, 3, 6 and 12 mM). The treatment that obtained the greatest increase in total biomass was the combination of 6 mM N + 4 ppm Nano ZnMo, with an increase of 11.6% compared to the treatment without application of Nano ZnMo. The treatment that registered the highest yield was the combination of 3 mM of N + 4 ppm of Nano ZnMo with an increase of 39.3% compared to the treatment without foliar application of Nano ZnMo (3 mM of N). The utilization coefficients (NUtE) and NUE were favored with the foliar application of Nano ZnMo at 4 ppm in combination with 3 and 6 mM of N in nutrient solution. These treatments made it possible to reduce the dose of N fertilization without compromising production. Therefore, the foliar adhesion of Nano ZnMo makes it possible to improve the efficiency of nutrient absorption and sustainably increase crop productivity.

Nitrato de zinc más quitosano favorece la asimilación de carbono y el rendimiento en frijol (Phaseolus vulgaris L.)

“…La enzima Nitrato reductasa (NR) es la enzima que se encarga de transformar el nitrato de las plantas en nitrito para posteriormente ser asimilado y convertido a metabolitos nitrogenados, por lo que su reacción puede M a n u s c r i t o a c e p t a d o ser inducida a la aplicación de nitrato (Maldonado, 2013). En cuanto a la variable NR, diversos estudios indican incrementos de 110 % al aplicar sulfato de Zn foliar en plantas de haba o incrementos de hasta 22 veces al aplicar 4 y 8 mg kg -1 de un nanofertilizante a base de Zn y Mo (Mohamed et al, 2016;Ramírez-Estrada et al, 2022). La aplicación foliar de Zn aumenta la actividad NR, ya que este micronutriente actúa de manera indirecta sobre la asimilación de nitrógeno debido al que juega un papel fundamental para el desarrollo y en la síntesis de proteínas en las plantas (Hemantaranjan & Trivedi, 2015).…”