NITROGEN FERTILIZATION IN SOYBEAN UNDER LOW LATITUDE AND LOW NATURAL SOIL FERTILITY

Authors

  • Ricardo Universidade Federal do Tocantins
  • Joenes Universidade Federal do Tocantins
  • Aline Torquato Tavares Universidade Federal do Tocantins
  • Eláiny Universidade Federal do Tocantins
  • Rodrigo Universidade Federal do Tocantins
  • Flávio Universidade Federal de São Carlos
  • Aloísio Universidade Federal do Tocantins
  • Clovis Universidade Federal do Tocantins

DOI:

https://doi.org/10.20873/uftv9-12768

Abstract

In soybean, some studies have shown yield increase when nitrogen is provided through symbiotic fixation along with nitrogen fertilization. Thus, this study aimed to evaluate the effect of nitrogen fertilization on soybean cultivated at a low natural fertility area. Two experiments (field and pot) were conducted. A randomized block design was adopted, with 24 treatments and 3 replications. The treatments were arranged in a 2x12 factorial scheme, represented by two cultivars (TMG 1288RRTM and CD 251RRTM) and 12 combinations of nitrogen supply (CNS). The CNS used were: without inoculant and nitrogen; only inoculant; 20; 40 and 60 kg ha-1 of N + inoculant; 50; 100; 150; 200; 250; 300 and 350 kg ha-1 of N. The doses of N were divided into three applications: 20% applied at planting, 40% at early flowering and 40% at grain-filling. The nitrogen fertilization associated with seed inoculation did not result in significant gains for crop yield. The mineral nitrogen supply affected negatively the number and mass of nodules, and positively the root mass.

Author Biographies

Ricardo, Universidade Federal do Tocantins

Mestre em Produção Vegetal pela Universidade Federal do Tocantins

Joenes, Universidade Federal do Tocantins

Professor Doutor na Universidade Federal do Tocantins

Aline Torquato Tavares, Universidade Federal do Tocantins

Doutoranda em Produção Vegetal na Universidade Federal do Tocantins, departamento de Fitotecnia e melhoramento de olerícolas

Eláiny, Universidade Federal do Tocantins

Professora na Universidade Federal do Tocantins

Rodrigo, Universidade Federal do Tocantins

Professor Doutor na Universidade Federal do Tocantins

Flávio, Universidade Federal de São Carlos

Professor Titular da Universidade Federal de São Carlos - Campus Lagoa do Sino 

Aloísio, Universidade Federal do Tocantins

Professor Doutor na Universidade Federal do Tocantins

Clovis, Universidade Federal do Tocantins

Professor Doutor na Universidade Federal do Tocantins

Published

2022-05-11

How to Cite

Costa Bachega, R. C. ., Mucci Peluzio, J. ., Tavares, A. T., Alves Martins Oliveira, E. C. ., Ribeiro Fidélis, R., Afférri, F. S. ., … Maurilio Souza, C. . (2022). NITROGEN FERTILIZATION IN SOYBEAN UNDER LOW LATITUDE AND LOW NATURAL SOIL FERTILITY . DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 9(2), 1–11. https://doi.org/10.20873/uftv9-12768

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Section

Artigos

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