The impact of herbicide residues on selected tolerant and susceptible crop and pasture species
Authors: Brian Dzoma1, Nigel Wilhelm2 and Kym Zeppel1
1SARDI Loxton Research Centre, 2SARDI Waite Research Precinct
Funded By: Grains Research and Development Corporation (DAS00169)
Peer Review: Sjaan Davey (SARDI – Waite) and Brett Masters (Rural Solutions – Port Lincoln)
Project Title: Improving sustainable productivity and profitability of Mallee farming systems with a focus on soil improvements)
Key Words: herbicide residues, herbicide tolerance
Key Messages
- Conventional crop and pasture species can suffer significant damage from carryover herbicides
- Non-herbicide tolerant lentil varieties are susceptible to very low levels of imidazolinones and sulfonylurea herbicide residues
- Significant losses can occur in non-Clearfield wheat varieties grown in soils with low levels of carryover Intervix
- Field peas and vetch have zero tolerance to Lontrel herbicide residues
- To avoid crop damage and losses, minimum re-cropping intervals (months after application) should be observed, and growers should be wary of unusual or extreme weather conditions.