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Year 2002 Remove constraint 2002: 2002 Authors Ralphs, M.H. Remove constraint Ralphs, M.H.: Ralphs, M.H.
Displaying items 1 - 10 of 11 start over

1. Clipping and precipitation influences on locoweed vigor, mortality, and toxicity

Description:
Includes references
Author:
Ralphs, M.H. , Gardner, D.R. , Graham, J.D. , Greathouse, G. , Knight, A.P.
Subject:
height , plant characteristics , Oxytropis sericea , poisonous plants , vigor , mortality , stems , leaf area , precipitation , drought , indolizidine alkaloids , chemical constituents of plants , swainsonine , New Mexico , Utah , Colorado
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

2. Conditioning taste aversions to locoweed (Oxytropis sericea) in horses

Description:
Includes references
Author:
Pfister, J.A. , Stegelmeier, B.L. , Cheney, C.D. , Ralphs, M.H. , Gardner, D.R.
Subject:
horses , Oxytropis sericea , feeding preferences , rangelands , lithium chloride , apomorphine , palatability , feeds , grazing , conditioned behavior
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

3. Development of STS and CAPS markers for identification of three tall larkspurs (Delphinium spp.)

Description:
Includes references
Author:
Li, X. , Gardner, D.R. , Ralphs, M.H. , Wang, R.R.C.
Subject:
Delphinium , genetic markers , nucleotide sequences , interspecific hybridization , random amplified polymorphic DNA technique , species differences
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

4. Distribution of locoweed toxin swainsonine in populations of Oxytropis lambertii

Description:
Includes references
Author:
Ralphs, M.H. , Welsh, S.L. , Gardner, D.R.
Subject:
swainsonine , geographical distribution , poisonous plants , endophytes
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

5. Ecological relationships between poisonous plants and rangeland condition: a review

Description:
Includes references
Author:
Ralphs, M.H.
Subject:
range management , rangelands , Delphinium , Astragalus , Oxytropis , Lupinus , Zigadenus , plant communities , overgrazing , avoidance conditioning
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

6. Genetic variation within and among 22 accessions of three tall larkspur species (Delphinium spp.) based on RAPD markers

Description:
Includes references
Author:
Li, X. , Ralphs, M.H. , Gardner, D.R. , Wang, R.R.C.
Subject:
genetic variation , Delphinium barbeyi , Delphinium glaucum , Delphinium occidentale , random amplified polymorphic DNA technique , genetic markers , poisonous plants , phylogeny , molecular systematics
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

7. Larkspur poisoning: toxicology and alkaloid structure-activity relationships

Description:
Includes references
Author:
Panter, K.E. , Manners, G.D. , Stegelmeier, B.L. , Lee, S. , Gardner, D.R. , Ralphs, M.H. , Pfister, J.A. , James, J.F.
Subject:
Delphinium glaucum , Delphinium barbeyi , Delphinium occidentale , phytotoxins , structure-activity relationships , poisoning , terpenoids , alkaloids , cattle , toxicity , rangelands , chemical constituents of plants , poisonous plants , literature reviews , meta-analysis , Western United States
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

8. Management of three toxic Delphinium species based on alkaloid concentrations

Description:
Includes references
Author:
Pfister, J.A. , Ralphs, M.H. , Gardner, D.R. , Stegelmeier, B.L. , Manners, G.D. , Panter, K.E. , Lee, S.T.
Subject:
Delphinium glaucum , Delphinium barbeyi , Delphinium occidentale , growing season , phytotoxins , grazing , cattle , flowering
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

9. Population cycles of broom snakeweed in the Colorado Plateau and Snake River Plains

Description:
Includes references
Author:
Ralphs, M.H. , Sanders, K.D.
Subject:
Gutierrezia sarothrae , leaf area , plant density , precipitation , drought , poisonous plants , population dynamics , age structure , grasses , shrubs , Agropyron desertorum , plant competition , Hilaria , invasive species , Utah , Idaho
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002

10. Prior feeding practices do not influence locoweed consumption

Description:
Includes references
Author:
Ralphs, M.H. , Greathouse, G. , Knight, A.P. , Doherty, D. , Graham, J.D. , Stegelmeier, B.L. , James, L.F.
Subject:
diet , beef cows , winter , Oxytropis sericea , spring , feeding preferences , prairies , poisonous plants , indolizidine alkaloids , alfalfa , hay , swainsonine , Colorado , New Mexico
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2002