+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Role of Size and Nitrogen in Competition between Annual and Perennial Grasses



Role of Size and Nitrogen in Competition between Annual and Perennial Grasses



Invasive Plant Science and Management 6(1): 87-98



Differing life histories contribute to difficulties establishing perennial grasses on lands dominated by exotic annual grasses. In a greenhouse study, we investigated to what extent allowing the perennial grass bluebunch wheatgrass to emerge before the exotic annual grass downy brome would increase its competitive ability and whether modifying nitrogen (N) would affect competition. We conducted an addition-series factorial experiment. In three cohort treatments, the two species were seeded concurrently or bluebunch wheatgrass was at the two- or four-leaf stage when downy brome was planted. N treatments were low (ambient) or high (N added to maintain 10 mg kg?1 [0.1286 oz lb?1]). Larger bluebunch wheatgrass avoided suppression by downy brome regardless of N. Under concurrent sowing, doubling downy brome density decreased bluebunch wheatgrass biomass by 22.6%? ?2.38 SE. In contrast, when bluebunch wheatgrass had a four-leaf size advantage, the same increase in downy brome density decreased bluebunch wheatgrass biomass by 4.14%? ?2.3Larger bluebunch wheatgrass also suppressed downy brome more effectively, but N enrichment decreased the suppressive ability of bluebunch wheatgrass.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 036841777

Download citation: RISBibTeXText

DOI: 10.1614/ipsm-d-12-00035.1


Related references

Capture and allocation of nitrogen byQuercus douglasii seedlings in competition with annual and perennial grasses. Oecologia 87(4): 459-466, 1991

Capture and allocation of nitrogen by quercus douglasii seedlings in competition with annual and perennial grasses. Oecologia 87(4): 459-466, 1991

Replacement series studies of competition between tropical perennial and annual grasses and perennial grass mixtures in northern New South Wales. Crop and Pasture Science 60(6): 526-531, 2009

Competition between burro-weed and annual and perennial grasses for soil moisture. Proc. Amer. Forage and Grassl. Counc, 11-27. Bibl. 2, 1966

Competition between native perennial and exotic annual grasses: implications for an historical invasion. Ecology 85(5): 1273-1283, 2004

Competition for moisture among seedlings of annual and perennial grasses as influenced by root elongation at low temperature. Ecology 51: 3, 530-4. Bibl. 5, 1970

The effects of water and nitrogen supply on the competition between three perennial meadow grasses. Acta Oecologica, Oecologia Plantarum 4(1): 71-82, 1983

The effects of water and nitrogen supply on the competition between 3 perennial meadow grasses. Acta Oecologica Oecologia Plantarum 4(1): 71-82, 1983

Phenology and seedling competition affect regeneration of perennial grasses in California exotic annual grasslands. Ecological Society of America Annual Meeting Abstracts 88: 5, 2003

Differential nitrogen response of annual and perennial grasses. J. Range Mgmt, 17: 2, 67-8. bibl. 3, 1964

California perennial grasses are physiologically distinct from both Mediterranean annual and perennial grasses. Plant and Soil 345(1-2): 37-46, 2011

The growth response of two east african perennial grasses to defoliation nitrogen fertilizer and competition. Oikos 51(1): 25-30, 1988

The effect of soil nitrogen on competition between native and exotic perennial grasses from northern coastal California. Plant Ecology 186(1): 23-35, 2006

The effect of nitrogen, plant density and competition between Bromus sterilis and three perennial grasses: The implications for boundary strip management. Weed Research 35(5): 363-368, 1995

Plant and soil nitrogen dynamics in mediterranean grasslands: a comparison of annual and perennial grasses. Oecologia 85(1): 142-149, 1990