Reduced annual ryegrass seed set by desiccation and swathing of canola

Document Type

Conference Proceeding

Publication Date

1-2013

Conference Title

2013 Society for Engineering in Agriculture Conference: Innovative Agricultural Technologies for a Sustainable Future

Place of Publication

Barton, ACT

ISBN

9781922107114

Keywords

Seed products, Herbicide-resistant crops, Canola, Field experiments

Disciplines

Agricultural Science | Agronomy and Crop Sciences | Weed Science

Abstract

Two field studies were conducted at Mt Barker in 2010 and 2011 to investigate techniques to reduce annual ryegrass seed set. Both experiments included swathing with a commercially available sprayer kit attached and desiccation of the standing crop. Results in 2010 showed, on average, desiccation with diquat reduced the viable ryegrass seed production by 65% and, on average, desiccation or spraying on the swather with glyphosate reduced the viable ryegrass seed production by 45% while spraying paraquat on the swather reduced the viable ryegrass seed production by 80%. The 2011 results showed swathing with above 2.4 L/ha of glyphosate at either 30% or 60% seed colour change of the canola reduced ryegrass seed viability by an average of 43% compared to the average of the nil and swathing alone while desiccation with above 2.4 L/ha of glyphosate at either 30% or 60% seed colour change of the canola reduced ryegrass seed viability by an average of 73% compared to the average of the nil and swathing alone. Spraying on the swather with paraquat reduced the viable ryegrass seed production by 69%.

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Digital Object Identifier (DOI)

https://doi.org/10.3316/informit.874876455035479