Topic
Bromus marginatus
About: Bromus marginatus is a research topic. Over the lifetime, 22 publications have been published within this topic receiving 232 citations.
Papers
TL;DR: Native vegetation composed of a mixture of grasses and forbs was clipped at different times during the growing season to determine when major species were most damaged by herbage removal, revealing a conspicuous shift toward grasses in total herbage composition.
Abstract: Native vegetation composed of a mixture of grasses and forbs was clipped at different times during the growing season to determine when major species were most damaged by herbage removal. Production of herbage and flower stalks was compared on treated and contiguous control plots the years following 1, 2, and 3 successive years of clipping. Clipping harmed the forbs much more than the grasses and caused a conspicuous shift toward grasses in total herbage composition. Production of Aster integrifolius and Potentilla gracilis was affected adversely by a single clipping in July just before and during flowering; by the end of 3 years of clipping, herbage production of these species was reduced approximately 50%, and the number of flower stalks was reduced approximately 80%. Festuca idahoensis, Bromus marginatus, and Agropyron trachycaulum generally were most harmed by clipping in late July and August, from flowering to seed ripening. Removal of herbage either during early growth or after the foliage began to dry did not damage either the forbs or grasses appreciably. Both Bromus and Agropyron benefited temporarily from reduced forb competition. Total vegetative production did not decrease significantly until the third year of clipping.
42 citations
TL;DR: The data presented here establish baselines for these species in locations subject to contrasting environmental and microbiological conditions that affect mineral cycling and availability to quantify how local conditions impact mineral cycling, and in turn, the sustainability of harvesting these stands.
33 citations
1 Jan 1990
TL;DR: The intensive sheep farming systems in Southland and South Otago are not capturing the genetic potential of lamb growth rates, so planting a range of herbage species can give a balanced supply of quantity and quality feed sufficient to meet the requirements of the animal system.
Abstract: The intensive sheep farming systems in place in Southland and South Otago are not capturing the genetic potential of lamb growth rates. Growth rates of works lambs average loo-140 g/day post weaning less than half their genetic potential. The major reason for low growth rates of lambs is the lack of adequate quality feed. Planting a range of herbage species, with the area in each pasture species balanced with its growth characteristics, can give a balanced supply of quantity and quality feed sufficient to meet the requirements of the animal system. This leads to more balanced matching of feed supply and demand, both within the four seasons of the year, and from year to year.
25 citations
TL;DR: Restriction site maps of the rDNA genes of nine Bromus species are described to provide useful molecular data for species identification and population and evolutionary studies in Bromus.
Abstract: Restriction site maps of the rDNA genes of nine Bromus species are described. The rDNA repeat units ranged from 8.2 to 11.1 kbp in length. Intraspecific length variation was observed in the BamHI digestions in three of the nine species. Restriction site variation was observed mainly in the intergenic spacer (IGS) but was also detected in the coding region. A unique KpnI site was present in the IGS of Bromus tectorum and Bromus sericeus (subgenus Stenobromus); in addition, B. sericeus contained an extra EcoRI site. An additional DraI site was observed in the IGS of Bromus trinii (subgenus Neobromus). A BstEII site in the IGS, common to seven of the species, was absent in B. tectorum and B. sericeus. In the coding region, a 2.1-kbp BstEII fragment was present in four subgenera represented by Bromus inermis and Bromus erectus (subgenus Festucaria), Bromus marginatus and Bromus carinatus (subgenus Ceratochloa), B. tectorum and B. sericeus (subgenus Stenobromus), and B. trinii (subgenus Neobromus); a similar f...
14 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2019 | 1 |
| 2018 | 2 |
| 2016 | 2 |
| 2015 | 1 |
| 2009 | 1 |
| 2006 | 1 |