The hidden costs of sulphonylurea herbicide use on micronutrient-poor soils


Research organisaton

Trial details

Researcher(s) P O', Keeffe and N Wilhelm
Year(s) 1991
Contributor South Australian Research and Development Institute
Trial location(s) Site 1, Eyre Peninsula, SA
Further information View external link
The hidden costs of sulphonylurea herbicide use on micronutrient-poor soils locations

To examine the interaction between herbicides and crop nutirition.

Key messages
  • A series of field experiments was conducted on the Eyre Peninsula to examine the effects of herbicides on the nutrition of treated crops.
  • Experiments investigating the effect of metsulfuron-methyl and chlorsulfuron on crop performance are reported here.
  • The parameters measured were shoot growth, tissue nutrient concentration and grain yield.
  • Application of metsulfuron-methyl to manganese-deficient barley and chlorsulfuron to zinc-deficient wheat crops caused yield penalties by intensifying the respective deficiencies.
  • Yields were not affected when the herbicides were applied to plots which were trace element adequate.
  • The consequences are that if adequate fertiliser regimes are not employed in the field, yield benefits due to weed control may be eroded by losses due to aggravated micronutrient deficiencies.
Lead research organisation N/A
Host research organisation South Australian Research and Development Institute
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners CSIRO


Crop type Barley
Treatment type(s)
  • Herbicide: Type
Trial type Experimental
Trial design Unknown

Eyre Peninsula 1991

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

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Trial last modified: 09-10-2019 10:22am AEST