Archived
This content is available here strictly for research, reference, and/or recordkeeping and as such it may not be fully accessible. If you work or study at University of Kentucky and would like to request an accessible version, please use the SensusAccess Document Converter.
Publication Date
1989
Location
Nice France
Description
Annual medics improve production and quality of herbage in winter and are naturalised in inland eastern Australia to lat. 24° S. In southern inland Queensland (lat. 24 to 29 °S, mean annual rain 500 to 800 mm with two-thirds in summer), productivity of the summer-growing grass pasture is limited by rainfall and soil N in summer, and by low temperature and frost in winter. Thus, I tested medic as a self-regenerating winter forage component. Because rainfall is highly variable in our region, I also used rainfall over the past 120 years to estimate the production of medics and so provide a broader view of their adaptation and productivity. To help investigate medic adaptation in marginal areas, this paper derives regression models for predicting both yields ( dry matter and seed) and N-fixation of medic from winter rainfall.
Citation
Clarkson, N M., "Regression Models to Assess Adapatation of Annual Medics (Medicago spp.) in Semi-Arid Subtropical Australia" (1989). IGC Proceedings (1985-2023). 22.
(URL: https://uknowledge.uky.edu/igc/1989/session13b/22)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Regression Models to Assess Adapatation of Annual Medics (Medicago spp.) in Semi-Arid Subtropical Australia
Nice France
Annual medics improve production and quality of herbage in winter and are naturalised in inland eastern Australia to lat. 24° S. In southern inland Queensland (lat. 24 to 29 °S, mean annual rain 500 to 800 mm with two-thirds in summer), productivity of the summer-growing grass pasture is limited by rainfall and soil N in summer, and by low temperature and frost in winter. Thus, I tested medic as a self-regenerating winter forage component. Because rainfall is highly variable in our region, I also used rainfall over the past 120 years to estimate the production of medics and so provide a broader view of their adaptation and productivity. To help investigate medic adaptation in marginal areas, this paper derives regression models for predicting both yields ( dry matter and seed) and N-fixation of medic from winter rainfall.
