Infuence of nitrogen fertilization on yield of amaranth

Authors

  • Telma Regina Brambilla Centro Universitário de Maringá
  • Ana Paula Brambilla Constantino Universidade Estadual de Maringá
  • Pérsio Sandir D´Oliveira Centro Universitário de Maringá

DOI:

https://doi.org/10.5433/1679-0359.2008v29n4p761

Keywords:

Amaranthus, Mineral nutrition, Crop yield.

Abstract

This work was carried out to study the effect of nitrogen fertilization on grain amaranth yield, in Maringá, north of Paraná state. It was done in feld conditions, using a complete randomized design, with four treatments and three replicates. Seeds were sowed in lines, spaced each 0.5 m. Fertilization was done with NPK 10-10-10 (350 kg/ha). Fifteen days after germination there was left a population of 20 plants m-1. Thirty days after germination felds received nitrogen fertilizer (urea, 45% N), and doses were 0; 50; 100; 200 kg N ha-1. Plants were cut 114 days after germination, to measure the following parameters: plant height;  stem diameter;  fresh  and dry biomass yield of  stems  and  leaves;  and  seed yield. Plant height and grain production showed quadratic response. Stem diameter showed no differences. Biomass production  (fresh and dry)  showed  linear  response. Yield of amaranth grains answered positively  to nitrogen fertilization.

Author Biographies

Telma Regina Brambilla, Centro Universitário de Maringá

Produtora  Rural  e  Acadêmica  do  Curso  de  Tecnologia  em  Gestão  de  Agronegócio  no  CESUMAR,  Maringá. 

Ana Paula Brambilla Constantino, Universidade Estadual de Maringá

Acadêmica do Curso de Agronomia da Universidade Estadual de Maringá.

Pérsio Sandir D´Oliveira, Centro Universitário de Maringá

Engenheiro Agrônomo, Doutor, Professor e Orientador do presente trabalho. CESUMAR, Maringá.

Published

2008-08-30

How to Cite

Brambilla, T. R., Constantino, A. P. B., & D´Oliveira, P. S. (2008). Infuence of nitrogen fertilization on yield of amaranth. Semina: Ciências Agrárias, 29(4), 761–768. https://doi.org/10.5433/1679-0359.2008v29n4p761

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