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Nitrogen Uptake by Perennial and Invasive Annual Grass Seedlings: Nitrogen Form Effects

Citation

Douglas A Johnson, Margaret G Redinbaugh, Thomas A Monaco, Thomas A Jones, and Charles T MacKown, Nitrogen Uptake by Perennial and Invasive Annual Grass Seedlings: Nitrogen Form Effects: .

Summary

Invasive annual cheatgrass (Bromus tectorum L.) and medusahead wildrye [Taeniatherum caput-medusae (L.) Nevski ssp. asperum (Simonk.) Melderis] have decreased livestock productivity and biological diversity and increased the frequency of wildfire on rangelands in the western United States. On disturbed sites, squirreltail (Elymus sp.), a short-lived North American perennial, appears to compete against invasive exotic annuals when available soil N and nitrification are reduced. We tested the hypothesis that differences in N uptake activity could account for this phenomenon. North American seedlings of perennial bluebunch wheatgrass [Pseudoroegneria spicata (Pursh) �. Löve], four populations of squirreltail, and two invasive exotic [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS export <br> On - Tue May 10 11:00:50 CDT 2011

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Title Citation Nitrogen Uptake by Perennial and Invasive Annual Grass Seedlings: Nitrogen Form Effects

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