Onion crop yield submitted to water and nitrogen levels by drip system

Authors

  • Renato Carvalho Vilas Boas Universidade Federal de Lavras
  • Janice Guedes de Carvalho Universidade Federal de Lavras
  • Geraldo Magela Pereira Universidade Federal de Lavras
  • Rovilson José de Souza Universidade Federal de Lavras
  • Gustavo Boscolo Nogueira da Gama Universidade Federal de Lavras
  • Henrique Hudari Garcia Universidade Federal de Lavras
  • Rodrigo Soares Ambrósio de Araujo Universidade Federal de Lavras

DOI:

https://doi.org/10.5433/1679-0359.2014v35n2p633

Keywords:

Allium cepa L., Trickle irrigation, Nitrogen fertilization, Mineral nutrition.

Abstract

The aim this work was evaluate the effects of water and nitrogen (N) levels, supplied by drip system, on yield and water use efficiency of onion crop (Allium cepa L.). The experiment was carried at the experimental area of DEG/UFLA, in a randomized block statistical design was used, in a factorial scheme 4 x 4, with three replicates. Four irrigation depths based on Class A evaporation tanks (50, 100, 150 and 200%) and four N doses (0, 60, 120 and 180 kg ha-1) were supplied through irrigation water (fertigation). It can be concluded that higher yields (total bulbs and of marketable bulbs) and higher average marketable bulbs mass were obtained with the irrigation depth of 512.7 mm (100% Class A) and 180 kg ha-1 of N. Water use efficiency decreased linearly as irrigation depths increased and N rate decreased.

Author Biographies

Renato Carvalho Vilas Boas, Universidade Federal de Lavras

Pesquisador, Universidade Federal de Lavras, UFLA, Lavras, MG.

Janice Guedes de Carvalho, Universidade Federal de Lavras

Profª da UFLA, Lavras, MG.

Geraldo Magela Pereira, Universidade Federal de Lavras

Prof. da UFLA, Lavras, MG.

Rovilson José de Souza, Universidade Federal de Lavras

Prof. da UFLA, Lavras, MG.

Gustavo Boscolo Nogueira da Gama, Universidade Federal de Lavras

Discente da UFLA, Lavras, MG.

Henrique Hudari Garcia, Universidade Federal de Lavras

Discente da UFLA, Lavras, MG.

Rodrigo Soares Ambrósio de Araujo, Universidade Federal de Lavras

Discente da UFLA, Lavras, MG.

Published

2014-04-28

How to Cite

Vilas Boas, R. C., Carvalho, J. G. de, Pereira, G. M., Souza, R. J. de, Gama, G. B. N. da, Garcia, H. H., & Araujo, R. S. A. de. (2014). Onion crop yield submitted to water and nitrogen levels by drip system. Semina: Ciências Agrárias, 35(2), 633–646. https://doi.org/10.5433/1679-0359.2014v35n2p633

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