Autor(es):
Galindo, Fernando Shintate ; Teixeira Filho, Marcelo Carvalho Minhoto ; Buzetti, Salatiér ; Santini, José Mateus Kondo ; Boleta, Eduardo Henrique Marcandalli ; Rodrigues, Willian Lima
Data: 2022
Identificador Persistente: http://hdl.handle.net/11449/221449
Origem: Oasisbr
Assunto(s): Biological nitrogen fixation; nitrogen sources; no-tillage system; Triticum aestivumL; urease inhibitor; Biological nitrogen fixation; Biological nitrogen fixation; nitrogen sources; nitrogen sources; no-tillage system; no-tillage system; Triticum aestivumL; Triticum aestivumL; urease inhibitor; urease inhibitor
Descrição
Made available in DSpace on 2022-04-28T19:28:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-08
New studies are needed to optimize the nitrogen (N) amount that can be applied to utilize the Azospirillum brasilense benefits. In addition, information regarding the interaction between the urease inhibitor and biological nitrogen fixation (BNF) and how they affect the macronutrients accumulation are also needed. We evaluate the effect of N sources and doses associated with A. brasilense regarding the macronutrients accumulation in straw and grains and wheat grain yield in tropical conditions. A randomized block experimental design was used with four replications in a 2×5 × 2 factorial arrangement as follows: two N sources (urea and urea with urease enzyme inhibitor NBPT; five N doses (0, 50, 100, 150, and 200kg ha−1) applied in topdressing; with and without A. brasilense inoculation. We found that an increase in N doses positively influenced the accumulation of macronutrients in straw and grains and the wheat grain yield. N sources have similar effects. Inoculation with A. brasilense increased accumulation of Mg and S in straw and P, Ca, and Mg in grains, regardless of the N dose. The inoculation with A. brasilense associated with 140kg ha−1 of N increased wheat grain yield. The inoculation can contribute in a more sustainable way to wheat nutrition and optimizing N fertilization.
Department of Plant Health Rural Engineering and Soils São Palo State University
