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Your search for keyword(s) "agroforestry" resulted in 2 record(s).
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- Title: Direct impacts of sheep upon Douglas-fir trees in two agrosilvopastoral systems
- Journal: Agroforestry Systems
- Authors: S. H. Sharrow, W. H. Carlson, W. H. Emmingham, and D. P. Lavender
- Date: 1992
- Summary: This study sought to describe the nature, extent, and timing of sheep impacts upon well-established young Douglas-fir (Pseudotsuga menziesii) trees planted in two patterns of sheep/pasture/conifer agroforest in western Oregon. Results showed that trees over 1-2 m tall rarely have terminal leaders browsed by sheep. No sheep browsing of tree terminal leaders was observed after 1985. Sheep removed the terminal leaders from only 3 to 9% of trees each year during 1983-1985. Most browsing of terminals occurred in the summer when other forages had become mature and were relat ...
- Agrovoc Control Words: Riparian zones, Rangelands, Wildlife
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- Title: Effects of grazing by sheep on the quantity and quality of forage available to big game in Oregon's coast range
- Journal: Journal of Range Management
- Authors: B. D. Rhodes, and S. H. Sharrow
- Date: 1990
- Summary: Rhodes and Sharrow looked at the effects of sheep grazing on the vegetation in Oregon's Coastal Range and the viability of wildlife forage. Two bands of ewes were grazed in 5 different sections, one grazed twice, randomly for two seasons. This grazing reduced the overall forage by 40%, but increased the quality of forage for wintering wildlife. Grazing during the growing season removes the mature growth of the plant which in turn makes the plant increase the amount of nutrients it releases. Rhodes and Sharrow state that most wildlife species chose forage, not based on plant quantity, but ...
- Agrovoc Control Words: Riparian zones, Rangelands, Wildlife
- View more details about this article
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