Swathing or direct harvesting canola with desiccation can reduce ryegrass seed set
Document Type
Conference Proceeding
Publication Date
1-2011
Conference Title
2011 Society for Engineering in Agriculture Conference: Diverse Challenges, Innovative Solutions
Place of Publication
Barton, ACT
ISBN
9780858259904
Keywords
weeds, control, research
Disciplines
Agricultural Science | Agronomy and Crop Sciences | Weed Science
Abstract
The aim of this study was to test the techniques of desiccation and swathing of canola on viable annual ryegrass weed seed numbers at harvest. Less viable ryegrass seed at harvest means less weed in the following crops and this may reduce the development of herbicide resistance. Desiccation with 3 L/ha of diquat (Reglone ) at 80% canola seed colour change reduced annual ryegrass seed set by 78% at Katanning. Desiccation at 90% seed colour change reduced annual ryegrass seed set by 50% at Mt Barker. Unfortunately diquat at 3 L/ha is currently cost prohibitive. Swathing reduced the remaining in-field viable ryegrass seed set by 98% at Mt Barker where the ryegrass was very tall, however 57% of the ryegrass seed in the swaths was viable. At Katanning only 10% of the ryegrass seed in the swaths was viable. The yield of the swathed treatments was lower than direct harvesting with or without desiccation at Katanning but was not significantly different at Mt Barker, which was swathed relatively late.
Recommended Citation
Riethmuller, G., Hashem, A., & Borger, C. (2011). Swathing or direct harvesting canola with desiccation can reduce ryegrass seed set. In 2011 Society for Engineering in Agriculture Conference: Diverse Challenges, Innovative Solutions. Engineers Australia. https://search.informit.org/doi/10.3316/informit.808498550822781
