HERBICIDES AND DESICCATION TIMES ON BUCKWHEAT PRODUCTIVITY AND GERMINATION

Authors

  • Larissa Juliane Guimaraes UTFPR https://orcid.org/0000-0003-0450-1673
  • Daniel Pedro Brondani UTFPR-UNIVERSIDADE TECNOLOGICA DO PARANA
  • Vanderson Vieira Batista UTFPR-UNIVERSIDADE TECNOLOGICA DO PARANA
  • Paulo Fernando Adami UTFPR-UNIVERSIDADE TECNOLOGICA DO PARANA

DOI:

https://doi.org/10.28998/rca.v19i3.11610

Keywords:

Dehiscence, Ammonium Gluphosinate, Paraquat, Desiccation time

Abstract

Buckwheat (Fagopyrum esculentum) fits very well in the soybean (harvested in the 2nd fortnight of February) and wheat off-season (sown in the 2nd fortnight of May), standing out for being a rustic and short cycle plant that produces gluten-free flour. However, the crop presents uneven maturation and a natural dehiscence habit, which can result in production losses. In this context, this work aimed to evaluate herbicides and desiccation times on the buckwheat yield, productivity and germination components. The experimental design used was that of random blocks, with three replicates in a factorial scheme with split plots. Factor A was composed of 4 desiccation times (1st application with 70% of mature grains in the main stem and the others successively with three days of interval) and factor B was composed of two herbicides (ammonium glufosinate and paraquat).  Yield, mass of one thousand grains and number of grains per plant components did not differ between herbicides or desiccation times. Desiccation at 69 days after emergence with ammonium glufosinate showed the highest buckwheat productivity and germination rate. For herbicide paraquat, there was no difference in productivity between application at 66 and 69 days after emergence; however, at 69 DAE, the germination rate was lower (80%).

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Published

2021-12-20

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Section

Proteção de Plantas