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Details

Autor(en) / Beteiligte
Titel
Herbicide residues of pre-harvest burndown in cowpea bean ( Vigna unguiculata ) grains
Ist Teil von
  • Experimental agriculture, 2020-12, Vol.56 (6), p.781-793
Ort / Verlag
Cambridge: Cambridge University Press
Erscheinungsjahr
2020
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
  • Abstract Cowpea bean ( Vigna unguiculata ) is usually submitted to pre-harvest burndown with herbicides aiming to an early harvest. We aimed to quantify the residues of paraquat, diquat, glufosinate-ammonium and glyphosate in cowpea grains subjected to two timings of pre-harvest burndown. Three identical experiments were installed in Dourados (Lat. 22° S), Sinop (Lat. 11° S) and Teresina (Lat. 05° S), Brazil, comprising the pre-harvest burndown of cowpea bean with these herbicides, applied either with 50 or 75% of the pods dry and ready for harvest. As hotter and drier the location as slower the herbicide dissipation. Glyphosate should not be used for pre-harvest burndown of cowpea. Herbicide residues were above the maximum levels stated by the Brazilian legislation when applied with 50% dry pods. Burndown herbicides aiming to speed harvest should be applied with at least 75% dry pods in cowpea to ensure safe herbicide residue levels in grains.
Sprache
Englisch
Identifikatoren
ISSN: 0014-4797
eISSN: 1469-4441
DOI: 10.1017/S0014479720000290
Titel-ID: cdi_proquest_journals_2575744886

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