Your search for keyword(s) "sideoats grama" resulted in 6 record(s).

Title: Seed production in sideoats grama populations with different grazing histories: Journal: Journal of Range Management; Authors: S. E. Smith, R. Mosher, and D. Fendenheim; Date: 2000; Summary: Long-term grazing may alter plant characteristics and this study was initiated to determine if seed production of sideoats grama (Bouteloua curtipendula var. caespitosa) differed between sites with or without a long history of livestock grazing in southern Arizona. Ramets were harvested from sideoats grama plants at a grazed and ungrazed site and grown in a greenhouse where they were exposed to simulated grazing treatments for two seasons. Plants originating in the grazed pasture had lower seed production, due to a reduced number of seeds per spike, ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Variation in response to defoliation between populations of Bouteloua curtipendula var. caespitosa (Poaceae) with different livestock grazing histories: Journal: American Journal of Botany; Authors: S. E. Smith; Date: 1998; Summary: Sideoats grama (Bouteloua curtipendula var. caespitosa) plants, grown from plant communities with similar composition that did or did not have a long history of cattle grazing, were defoliated every 14, 28, or 56 days to determine whether previous exposure to grazing affected plant response to herbivory. Plants grown from populations that had been previously exposed to grazing had lower mortality than plants grown from ungrazed populations, indicating that grazing history influenced plant herbivory tolerance. Plant height and leaf growth angle were n ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Effects of cattle trampling and mechanical seedbed preparation on grass seedling emergence: Journal: Journal of Range Management; Authors: V. K. Winkel, and B. A. Roundy; Date: 1991; Summary: Winkel and Roundy measured seedling densities, cover and species composition of native plants in plots exposed to mechanical seedbed preparation techniques (root plowing, land imprinting and ripping) prior to seed application and light or heavy cattle trampling (after seed application). Emergence of planted seedlings and native plants was strongly influenced by precipitation patterns and climactic conditions, which may be more important than seedbed preparation techniques in some years. However, in general, seedling emergence for most species was greatest in plots that were exposed to heavy ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Effects of seedbed preparation and cattle trampling on burial of grass seeds: Journal: Journal of Range Management; Authors: V. K. Winkel, B. A. Roundy, and D. K. Blough; Date: 1991; Summary: Winkel et al measured seed burial and seedling emergence in plots exposed to mechanical seedbed preparation techniques (root plowing and ripping), prior to seed application and light or heavy cattle trampling (after seed application). Seeds were found at the greatest depths in plots exposed to heavy trampling, at intermediate depths in plots exposed to mechanical methods, and at shallow depths in plots exposed to light trampling. Seedling emergence was greater for seeds that were buried, as seeds that were left on undisturbed soil were washed away in summer thunderstorms. However, emergence ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Prosopis glandulosa growth: Influence of nutrients and simulated grazing of Bouteloua curtipendula: Journal: Ecology; Authors: O. W. Van Auken, and K. J. Bush; Date: 1989; Summary: Van Auken and Bush determined the effects of inter-plant and resource competition on the growth of Prosopis glandulosa, when this shrub was grown in experimental plots with clipped or unclipped Bouteloua curtipendula grass plants. Clipping reduced the biomass of B. curtipendula and increased the biomass of P. glandulosa, suggesting that grazing may enhance the growth and encroachment of shrub species, such as Prosopis glandulosa, in grass-dominated plant communities. The addition of fertilizer to the soil enh ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Effects of defoliation and nematode consumption on growth and leaf gas exchange in Bouteloua curtipendula: Journal: Oikos; Authors: R. E. Ingham, and J. K. Detling; Date: 1986; Summary: The authors tested the effects of clipping and root herbivory, both separately and combined, on the growth and leaf gas exchange of sideoats grama (Bouteloua curtipendula). Nematodes (Tylenchorhynchus claytoni) increased quickly on both defoliated and non-defoliated plants, although higher numbers were found on non-defoliated plants at the end of the study. However, as defoliated plants had lower root mass, there were 46% more nematodes per unit root biomass on these plants. Both defoliation and nematode feeding significantly decreased shoot production ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article