Three larkspurs, halogeton, and western falsehellebore were examined for seasonal variation of their contained poisons. With the exception of low larkspur, greatest concentrations of the poisons were found in the leaves. Alkaloid concentration in tall larkspurs decreased with plant maturity. Cattle losses may be reduced if tall larkspurs are avoided during early vegetative growth. The alkaloid content of tall larkspurs was increased by treatment with 2,4,5-T and silvex. Only 2,4,5-T increased alkaloid content of western falsehellebore. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.