Rangeland Ecology & Management
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Displaying 101 - 150 of 307 results
- Library Collection RecordWe compared the preference of cattle for 12 entries, 2 of crested wheatgrass [Agropyron desertorum (Fischer ex Link) Schultes], 5 of thickspike wheatgrass [Elymus lanceolatus (Scribner & J.G.…Publication Date 1994-03-01
- maturity
- heading date
- Elymus lanceolatus
- Pseudoroegneria spicata
- agronomic traits
- Agropyron desertorum
- palatability
- cultivars
- grazing behavior
- Utah
- grazing
- beef cattle
- feeding preferences
- Library Collection RecordChanges in woodland vegetation integrate the consequences of livestock grazing intensity, the alteration of fire regimes, and possible climate alterution, as well as other factors. Quantitative…Publication Date 1994-09-01
- pinyon-juniper
- ground cover
- understory
- species diversity
- fire ecology
- stocking rate
- range management
- botanical composition
- Utah
- grazing
- beef cattle
- Library Collection RecordThe negative correlation between carbon isotope discrimination and water-use efficiency in C3 species, including alfalfa (Medicago sativa L.), suggests that carbon isotope discrimination that might…Publication Date 1995-03-01
- carbon isotope ratios
- isotopes
- Medicago sativa
- selection criteria
- heritability
- ratios
- genetic variation
- transpiration
- water-use efficiency
- Utah
- Library Collection RecordDevelopment of plant materials adapted to the demands of a harsh environment and conditions created by standard planting practices has resulted in improved seedling establishment for some species.…Publication Date 1994-03-01
- Pseudoroegneria spicata
- selection criteria
- seedling emergence
- seed weight
- cultivars
- vigor
- seed germination
- Utah
- Library Collection RecordRevegetation success on foothill ranges in northern Utah using big sagebrush (Artemisia tridentata Nutt. spp. wyomingensis Beetle and Young) and rubber rabbitbrush brush (Chrysothamnus nauseosus…Publication Date 1994-01-01
- Chrysothamnus nauseosus
- horses
- winter
- spring
- Artemisia tridentata
- Odocoileus hemionus
- land restoration
- Utah
- grazing
- Library Collection RecordForage improvement programs often select for increased crude protein and dry matter digestibility. Additionally, breeding programs may be interested in selecting for enhanced transpiration efficiency…Publication Date 1995-03-01
- isotopes
- discrimination
- Alopecurus arundinaceus
- Alopecurus
- carbon
- Medicago sativa
- errors
- calibration
- Agropyron desertorum
- prediction
- perennials
- water-use efficiency
- South Dakota
- infrared spectroscopy
- Utah
- grasses
- New Mexico
- Library Collection RecordThe optimum combination of 3 range improvements was determined for private lands on Utah ranches. While many promising range improvements are available, determination of which alternatives to…Publication Date 1994-03-01
- linear programming
- grassland improvement
- pinyon-juniper
- sown grasslands
- tebuthiuron
- chemical control
- prescribed burning
- beef cows
- Artemisia tridentata
- Utah
- Library Collection RecordIn rangeland revegetation, selection of forages palatable to the primary grazer is crucial Five tame mule deer were used in the spring and fall to determine forage preferences for 16 grasses commonly…Publication Date 1994-07-01
- biting rates
- species differences
- diet
- Odocoileus hemionus
- Utah
- grasses
- feeding preferences
- Library Collection RecordMany ranchers claim that if a cow starts eating locoweed, she will teach others to eat it. Three grazing trials were conducted to evaluate the role of social facilitation in starting cattle to graze…Publication Date 1994-03-01
- biting rates
- conditioned behavior
- Oxytropis sericea
- Astragalus mollissimus
- responses
- animal behavior
- cattle
- Utah
- feeding preferences
- Library Collection RecordLivestock producers report cattle deaths from larkspur (Delphinium spp.) poisoning increase during stormy periods. In controlled grazing studies, we observed cattle increase larkspur consumption…Publication Date 1994-07-01
- grazing trials
- Delphinium barbeyi
- ambient temperature
- storms
- atmospheric pressure
- palatability
- relative humidity
- rain
- Utah
- beef cattle
- feeding preferences
- Library Collection RecordUtah rangeland real estate underwent an inflation-deflation price cycle from 1975 through 1988. A total of 166 Utah land sales were analyzed to determine whether factors affecting rangeland prices…Publication Date 1993-01-01
- land values
- carrying capacity
- inflation
- deflation
- land markets
- rangelands
- Utah
- Library Collection RecordGoatsrue (Galega officinalis L.) was introduced into northern Utah from Europe as a potential forage crop in 1891. Subsequent testing indicated goatsrue was unpalatable and toxic to livestock. The…Publication Date 1992-09-01
- Galega officinalis
- net assimilation rate
- growth analysis
- sexual reproduction
- plant development
- leaf area
- photoperiod
- weed biology
- dry matter accumulation
- diurnal variation
- air temperature
- environmental factors
- growth rate
- Utah
- Library Collection RecordTebuthiuron [N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]N,N'-dimethylurea] controls small trees in regrown pinyon-juniper woodland chainings. Precise applications by hand minimize cost and…Publication Date 1993-01-01
- Pinus monophylla
- woody plant invasion
- Juniperus osteosperma
- placement
- Pinus edulis
- tebuthiuron
- brush control
- invasion
- chemical control
- application rates
- rangelands
- Utah
- Library Collection RecordCrested wheatgrasses (Agropyron spp.) are grown on 6 million ha in the U.S. and Canada, where they provide excellent early-season forage, but lose nutritional quality by midsummer. Some producers…Publication Date 1992-07-01
- crop quality
- grass tetany
- Agropyron desertorum
- Agropyron fragile
- Agropyron cristatum
- regrowth
- phosphorus
- calcium
- crude protein
- in vitro digestibility
- nitrogen content
- seasonal variation
- crop yield
- nutritive value
- Utah
- forage
- chemical constituents of plants
- Library Collection RecordChanges in rangeland vegetation integrate the consequences of livestock grazing intensity and possible climate change, as well as other factors. Because vegetation changes tend to be very slow in dry…Publication Date 1992-11-01
- xerophytes
- Krascheninnikovia
- Hilaria
- change
- Hilaria jamesii
- eremosemium spinosa
- Achnatherum hymenoides
- ecological succession
- Chrysothamnus viscidiflorus
- vegetation
- Artemisia tridentata
- plant communities
- rangelands
- Utah
- livestock
- grazing
- Library Collection RecordFrom a planting of antelope bitterbrush (Purshia tridentata Purshia DC) and 'Hobble Creek' mountain big sagebrush (Artemisia tridentata ssp. vaseyana Rydb. Beetle), pairs of plants were…Publication Date 1992-03-01
- monoterpenoids
- Purshia tridentata
- palatability
- winter
- Artemisia tridentata
- Odocoileus hemionus
- Utah
- forage
- feeding preferences
- chemical constituents of plants
- Library Collection RecordMortality of shadscale (Atriplex confertifolia [Torr. & Frem.] Wats.) was severe in Great Basin valley bottoms between 1983 and 1988. Puddle Valley, Utah, just west of the Great Salt Lake,…Publication Date 1992-03-01
- Bassia scoparia
- population ecology
- edaphic factors
- Atriplex confertifolia
- Halogeton glomeratus
- population dynamics
- mortality
- Bromus tectorum
- environmental factors
- soil water content
- plant communities
- Utah
- Library Collection RecordA total of 341 Utah rural land sales occurring between 1980 and 1987 were analyzed to identify and quantify the determinants of Utah rangeland and ranch prices. Two factors statistically influenced…Publication Date 1992-05-01
- valuation
- selling prices
- rural economy
- econometric models
- land values
- ranching
- prediction
- regression analysis
- rangelands
- Utah
- Library Collection RecordAddiction is commonly cited as a clinical sign of locoweed (Astragalus spp. and Oxytropis spp.) poisoning. In a previous study, ewes progressively poisoned on locoweed ("locoed") in…Publication Date 1991-05-01
- addiction
- ewes
- Oxytropis
- Astragalus
- biting rates
- poisoning
- poisonous weeds
- sheep
- grazing behavior
- Utah
- feeding preferences
- Library Collection RecordThe impact of grazing animals and plant protection on shrub seedling establishment was studied in 2 separate experiments. A total of 3,665 seedlings were monitored for survival during a sheep grazing…Publication Date 1992-05-01
- colonizing ability
- biological control
- site factors
- Agropyron desertorum
- brush control
- mortality
- seedlings
- pastures
- Artemisia tridentata
- sheep
- cattle
- Utah
- grazing
- Library Collection RecordA study determined sage grouse (Centrocercus urophasianus) preference for 3 subspecies and 9 accessions of big sagebrush (Artemisia tridentata Nutt.). The subspecies were mountain big sagebrush (A.t…Publication Date 1991-09-01
- geographical races
- Phasianidae
- Centrocercus urophasianus
- subspecies feeding preferences
- accession
- biting rates
- leaves
- genotype
- Artemisia tridentata
- Utah
- feeding preferences
- Library Collection RecordBarbey larkspur (Delphinium barbeyi L. Huth) is a palatable poisonous plant that causes a large number of cattle deaths on mountain rangelands. The objective of the study was to determine whether or…Publication Date 1990-03-01
- behavior modification
- lithium
- chlorides
- forage conditioning
- grazing trials
- Delphinium barbeyi
- heifers
- diets
- grazing behavior
- cattle
- Utah
- feeding preferences
- poisonous plants
- Library Collection RecordDietary composition and quality, activity budgets, and foraging behavior of tame mule deer (Odocoileus hemionus hemionus) were monitored in winter to ascertain the effects of prior summer use of…Publication Date 1990-05-01
- overwintering
- snow
- foraging
- Odocoileus hemionus
- Odocoileus
- diet studies
- goats
- wildlife management
- botanical composition
- Utah
- browsing
- Library Collection RecordSmall-plot trials of effective herbicides for manual woody-weed treatments should be validated on large tracts where rapidity, thoroughness, and efficiency of application are integral to operational-…Publication Date 1990-01-01
- Pinus monophylla
- coverage
- Juniperus osteosperma
- manual weed control
- timing
- placement
- pesticide application
- tebuthiuron
- brush control
- range management
- Utah
- Library Collection RecordLittle has been done to evaluate the mid-winter crude protein, phosphorus, and in vitro digestibility of subspecies and accessions of rubber rabbitbrush (Chrysothamnus nauseosus ssp.) For those few…Publication Date 1990-03-01
- geographical races
- variation
- Chrysothamnus nauseosus
- winter
- phosphorus
- crude protein
- California
- in vitro digestibility
- Nevada
- nutritive value
- Utah
- Arizona
- forage
- Library Collection RecordGlobemallows (Sphaeralcea spp.) have potential in rangeland seedings. Thirty-seven accessions of globemallow were grown at 2 sites in northern Utah and southern Idaho to quantify their agronomic…Publication Date 1990-09-01
- sphaeralcea munroana
- Sphaeralcea
- sphaeralcea grossulariifolia
- sphaeralcea parvifolia
- Sphaeralcea coccinea
- mixed pastures
- Medicago sativa
- agronomic traits
- sown grasslands
- arid zones
- genotype
- Agropyron desertorum
- genetic variation
- Agropyron cristatum
- mortality
- seeds
- pastures
- Idaho
- growth rate
- crop yield
- Utah
- forage
- Library Collection RecordBasin big sagebrush (Artemisia tridentata Nutt ssp tridentata Beetle) often invades rangelands seeded to introduced grass species. Livestock grazing may enhance the invasion but the effects of…Publication Date 1990-03-01
- short-duration grazing
- size
- Agropyron desertorum
- population dynamics
- mortality
- pastures
- grazing intensity
- Artemisia tridentata
- plant density
- Utah
- grazing
- Library Collection RecordFoliar sprays of 2,4-D [(2,4-dichlorophenoxy)acetic acid]), picloram (4-amino-3,5,6-trichloro-2-pyridinecarboxylic acid), dicamba (3,6-dichloro-2-methoxy benzoic acid), or clopyralid (3,6-dichloro-2-…Publication Date 1988-11-01
- Chrysothamnus
- Weeds
- evaluation
- herbicides
- weed control
- species
- range management
- rangelands
- Utah
- Library Collection RecordThe growth and annual replacement of crested wheatgrass (Agropyron desertorum (Fisch. ex Link) Schult.) tillers are affected by resource availability. Fertilization and grazing affect the resources…Publication Date 1989-03-01
- Agropyron desertorum
- tillering
- Utah
- Library Collection RecordDyers woad (Isatis tinctoria L.) is an introduced cruciferous forb that is rapidly expanding on intermountain rangelands and is apparently reducing production and regeneration of more desirable…Publication Date 1989-01-01
- Isatis tinctoria
- cultural control
- biological control
- weed control
- mortality
- cutting
- sheep
- Utah
- grazing
- Library Collection RecordReplicated populations of 5 shrub species were monitored over a 3-year period to assess community responses to intensive browsing by Spanish-type goats. Response variables included stem density, stem…Publication Date 1989-09-01
- productivity
- goats
- botanical composition
- Utah
- Library Collection RecordTall larkspur (Delphinium barbeyi) is a major cause of livestock death on mountain ranges. The influence of plant phenology, grazing site, and rumen fill on tall larkspur consumption was evaluated…Publication Date 1988-11-01
- consumption
- mountains
- mountain areas
- toxicity
- highlands
- site factors
- Delphinium barbeyi
- palatability
- rumen contents
- diet studies
- cattle
- rangelands
- Utah
- poisonous plants
- Library Collection RecordThe allometric relationship between plant volume and phytomass of crested wheatgrass was studied for the 1981, 1983, and 1984 growing seasons in west-central Utah. Basal diameters, canopy diameters,…Publication Date 1988-09-01
- models
- biomass determination
- volume determination
- estimates
- allometry
- nonlinear regression
- Agropyron desertorum
- prediction
- productivity
- diameter
- range management
- Utah
- canopy
- plant height
- Library Collection RecordEphedra viridis and Ephedra nevadensis were gavaged at high doses to pregnant livestock to determine whether there existed any maternal or embryo/fetal toxicity. E. viridis was tested in both sheep…Publication Date 1989-01-01
- fetus
- human health and safety
- embryo (animal)
- ephedra viridis
- symptoms
- Ephedra
- cows
- toxicity
- sheep
- Utah
- poisonous plants
- Library Collection RecordThis study considered seedling establishment characteristics, nitrogen fixation capability, nutritive value, and clustering relationships among 11 putative ecotypes of sweetvetch (Hedysarum boreale…Publication Date 1989-11-01
- Hedysarum
- provenance trials
- crop establishment
- cluster analysis
- nitrogen fixation
- ecotypes
- genetic variation
- seedlings
- nutritive value
- Utah
- forage
- Library Collection RecordVegetation and soils were evaluated on 5 different-aged, mechanically treated and seeded pinyon-juniper sites and compared to adjacent untreated areas. Plant cover was significantly changed after…Publication Date 1989-03-01
- botanical composition
- Pinus
- Juniperus
- removal
- Utah
- Library Collection RecordThe predation by selected arthropod predators on immature and adult black grass bugs (BGB), Labops hesperius and Irbisia brachycera, on Utah ranges was investigated. Adult Nabis alternatus was found…Publication Date 1988-03-01
- insect control
- biological control
- Hemiptera
- arthropods
- Labops hesperius
- predators of insect pests
- irbisia brachycera
- Agropyron
- predators
- rangelands
- Utah
- Library Collection RecordIngestion of tall larkspur (Delphinium barbeyi L. Huth) is a major cause of cattle death on ranges where the plant occurs. The amount and timing of tall larkspur ingestion by grazing cattle was…Publication Date 1988-03-01
- alkaloids
- Delphinium barbeyi
- ingestion toxicity
- mountain grasslands
- grazing behavior
- cattle
- phenology
- rangelands
- Utah
- poisonous plants
- Library Collection RecordUnderstanding the conditions in which livestock consume poisonous plants is necessary to develop management strategies to reduce losses. Three 10-day grazing trials were conducted to observe…Publication Date 1987-07-01
- premature birth
- prevention
- maturity
- pods
- developmental stages
- Oxytropis
- weed palatability
- flowers
- Oxytropis sericea
- grazing experiments
- stocking rate
- Hereford
- steers
- Utah
- feeding preferences
- Library Collection RecordThe feasibility of using esophageal extrusa to monitor dietary tannin levels was studied using 4 shrub species (Purshia tridentata, Quercus gambelii, Cercocarpus montanus and Acer grandidentatum).…Publication Date 1987-09-01
- Acer saccharum subsp. grandidentatum
- mastication
- Quercus gambelii
- saliva
- phenolic compounds
- Purshia tridentata
- browse plants
- esophagus
- tannins
- crude protein
- cattle
- in vitro digestibility
- Utah
- Cercocarpus montanus
- Library Collection RecordAn approach was developed for estimating the economic optimum rate of initial overstory kill for increasing seasonal forage availability. The model was formulated using: (1) a biological production…Publication Date 1988-03-01
- scrub control
- overstory control
- understory release
- econometric models
- optimization
- Agropyron desertorum
- Agropyron cristatum
- crop production
- Artemisia tridentata
- range management
- Utah
- forage
- Library Collection RecordFour communities or sites dominated by blackbrush (Coleogyne ramosissima Torr.) were studied in the Kaiparowits Basin of southern Utah and northern Arizona. One site has been heavily grazed yearlong…Publication Date 1987-09-01
- Coleogyne ramosissima
- ground cover
- vegetation types
- plant communities
- Utah
- livestock
- grazing
- Arizona
- Library Collection RecordUtilization of a crested wheatgrass pasture was studied at constant stocking rate (3 cattle/ha) in pastures of 1, 2, 4, and 8 ha, with herd sizes ranging from 3-24 head. Pasture utilization on a…Publication Date 1988-01-01
- livestock numbers
- Agropyron desertorum
- pastures
- grazing behavior
- cattle
- Utah
- feeding preferences
- Library Collection RecordAnimal performance and nutrition under short duration grazing (SDG) and season-long grazing (SLG) were compared on spring-grazed crested wheatgrass [Agropyron desertorum (Fisch.) Schult. and A.…Publication Date 1988-05-01
- nutrient requirements
- forage evaluation
- animal production
- controlled grazing
- browse plants
- Agropyron desertorum
- liveweight gain
- Agropyron cristatum
- heifers
- Utah
- grazing
- feed intake
- Library Collection RecordPlanting palatable shrubs and legumes into an established stand of crested wheatgrass (Agropyron desertorum and A. cristatum) could increase forage yield and nutritional quality. Preferential grazing…Publication Date 1987-11-01
- transplanting
- interplanting
- planting
- Bassia prostrata
- Medicago sativa
- Agropyron desertorum
- Atriplex canescens
- Agropyron cristatum
- growth
- cutting
- Artemisia tridentata
- crop yield
- plant competition
- rangelands
- Utah
- Library Collection RecordA fence line contrast was provided by a deer fence that bisected a mountain big sagebrush (Artemisia tridentata ssp. vaseyana) community. The sagebrush community was located on an exposed, west-…Publication Date 1988-03-01
- dieback
- plant community analysis
- ecological succession
- mortality
- mountain grasslands
- Artemisia tridentata
- Odocoileus hemionus
- browsing damage
- Utah
- Library Collection RecordA study was conducted in Rich County, Utah, to determine the relationship between land ownership and range condition. Analysis of variance and paired-plot t-tests were used to compare range condition…Publication Date 1987-07-01
- analysis of variance
- expenditures
- public ownership
- correlation
- environmental assessment
- private ownership
- land ownership
- sampling
- rangelands
- Utah
- grazing
- Library Collection RecordSoil textural relationships were used on 3 soil series on both plowed and native rangeland to predict Green and Ampt infiltration equation parameters. Infiltration rates predicted from the Green and…Publication Date 1988-03-01
- soil organic matter
- physicochemical properties
- rangeland soils
- methodology
- soil water content
- Utah
- infiltration
- bulk density
- soil texture
- Library Collection RecordThe successful establishment of perennial grass seedlings on Artemisia rangelands may depend on germination in the early spring at cold seedbed conditions. To ascertain the feasibility of selecting…Publication Date 1986-07-01
- Elytrigia repens
- cold tolerance
- Elytrigia intermedia subsp. intermedia
- hybrids
- lines
- Agropyron desertorum
- seed germination
- Utah
- Library Collection RecordBecause of restrictions imposed by crossing barriers, crested wheatgrass breeders have usually limited themselves to selection and hybridization within ploidy levels i.e., diploid (2n=14), tetraploid…Publication Date 1986-05-01
- seed production
- interspecific hybridization
- agronomic traits
- plant breeding
- Agropyron desertorum
- genetic variation
- tetraploidy
- Agropyron cristatum
- semiarid zones
- rangelands
- Utah