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Kochia scoparia oxalate content.

C W Dickie1, M L Gerlach, D W Hamar

  • 1College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Rocky Ford 81067.

Veterinary and Human Toxicology
|June 1, 1989
PubMed
Summary

Kochia scoparia plants can accumulate high levels of soluble oxalates, especially after heavy rainfall. These elevated oxalate concentrations pose a risk of chronic oxalate poisoning in cattle.

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Area of Science:

  • Agricultural Science
  • Plant Science
  • Veterinary Toxicology

Background:

  • Kochia scoparia (kochia) is a common forage plant.
  • Oxalate accumulation in plants can impact livestock health.
  • Environmental factors may influence kochia's oxalate content.

Purpose of the Study:

  • To quantify soluble and total oxalate concentrations in Kochia scoparia.
  • To assess the influence of growing season and environmental conditions on oxalate levels.
  • To determine the potential risk of oxalate poisoning in cattle.

Main Methods:

  • Kochia scoparia samples were collected over multiple growing seasons (1984-1987).
  • Plant samples were air-dried and hammer-milled.
  • Soluble and total oxalates were analyzed using established laboratory methods.

Main Results:

  • Oxalate concentrations varied by year and sample location.
  • Maximum soluble oxalate content reached 4.7% in 1986 Colorado kochia.
  • Maximum total oxalate content reached 11.4% in 1986 Colorado kochia, following heavy rainfall.

Conclusions:

  • Kochia scoparia can accumulate significant amounts of oxalates.
  • Heavy rainfall appears to correlate with higher oxalate concentrations.
  • High soluble oxalate levels in kochia may lead to chronic oxalate poisoning in cattle.

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