Revista Brasileira De Herbicidas 2013; 12(2): 143-150
Canola desiccation at different stages of pods maturation
Canola has outstanding as a great winter crop option and nowadays occupies the fourth place among oil species in production. One of the major difficulties in canola cultivation is the harvest season, because its pods do not show maturation uniformity. A technique that may be used to facilitate the harvest is the use of desiccants. Therefore, this study aimed to evaluate desiccation effect, in distinct pods maturation in canola crop. The work was conducted in field conditions, in Terra Roxa County, Parana State, by using a randomized complete blocks design with four replications. Treatment consisted of paraquat application (2.5 L ha-1 of Gramoxone 200®), sprayed at different periods of crop development, from three percentages of maturate pods, 30, 45 and 75% (visual assessment), plus a check without desiccant herbicides. There were no significant differences for yield and mass of a thousand seeds. In relation to seeds moisture, significant differences were observed, with 75% of mature pods occurring with inferior moisture.
Keywords: antecipação da dessecação; canola; melhora na colheita
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