Publication Date
3-1994
Series Number
Miscellaneous Publication 14/94
Publisher
Department of Agriculture Western Australia
City
Perth
ISSN
0725-847X
Abstract
Alternative strategies to control ryegrass in wheat lupin rotations are worth approximately 15 dollars per hectare for each 50% reduction achieved in plant or seed numbers. This figure has been calculated for circumstances similar to those found at Wongan Hills, and it holds in all cases where ryegrass is still under control using standard herbicides.
Farmers should adopt any ryegrass strategy in addition to that normally practised, so long as the cost to control ratio is less than $15/ha/50% kill. This applies even where good control is being achieved using grass selective herbicides, regardless of the number of previous applications of these herbicides, and regardless of the level of alternative control which is already being applied.
The types of alternative control considered in this analysis are anything additional to normal practice in a wheat lupin rotation. This includes such possibilities as seed harvesting, burning, high crop seeding rates, early tickle cultivation, and delaying of seeding for more complete control by tillage. But in making a decision regarding any of these practices care must be taken to account for the entire cost of the practice as well as its effectiveness.
Number of Pages
14
Keywords
Ryegrass; Weed strategy, Wheat; Lupin; Weed control; Alternative weed control; Herbicide resistance; Farm economics
Disciplines
Agribusiness | Agricultural Economics | Agricultural Science | Agronomy and Crop Sciences | Biosecurity | Natural Resource Economics | Weed Science
Recommended Citation
Diggle, A J,
Gill, G S,
and
Holmes, J E.
(1994), Delaying the development of herbicide resistant ryegrass by using alternative weed control strategies. Department of Agriculture Western Australia, Perth. Report Miscellaneous Publication 14/94.
https://library.dpird.wa.gov.au/bs_publishedrpts/60
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