Rangeland Ecology & Management
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Displaying 401 - 450 of 526 results
- Library Collection RecordDuring late fall and winter of 1975-76 and 1976-77, contents of 41 stomachs were analyzed to determine foods of feral pigs in extreme southern Texas. Thirty-six food items were identified, including…Publication Date 1980-03-01
- Texas
- Library Collection RecordCharacteristics of nesting and wintering habitats of golden-cheeked warblers (Dendroica chrysoparia) were studied from 1973-1978. Golden-cheeks are obligatively dependent on Ashe juniper (Juniperus…Publication Date 1980-01-01
- Texas
- Library Collection RecordLow-energy mechanical grubbing of huisache densities of 181 to 689 trees/ha, 1.8 to 2.6 m tall, reduced the canopy by 90 to 96% and killed 65 to 81% of the treated plants on the Coastal Prairie.…Publication Date 1979-05-01
- Texas
- Library Collection RecordDuring the spring of 1973, white grubs, Phyllophaga crinita (Burm.), at a density of $46.3/{\rm m}^{2}$, reduced cover of perennial grasses by 88% in localized areas of a shortgrass community in…Publication Date 1979-11-01
- Texas
- Library Collection RecordShredding or burning during the spring, summer, or winter increased the live gulf cordgrass standing crop, decreased the dead gulf cordgrass standing crop, and increased the percentage of plants…Publication Date 1979-09-01
- marshes
- Texas
- prairies
- Library Collection RecordBotanical composition of white-tailed deer fecal pellets from untreated and brush-controlled areas of the Texas Rolling Plains was studied by microscopic analysis. Deer showed a marked preference for…Publication Date 1979-03-01
- Texas
- Library Collection RecordTerminal infiltration rates for one pasture in a 4-pasture deferred-rotation grazing system and a 27-year exclosure were found to be similar (10.40 and 10.24 cm/hr, respectively). A heavily,…Publication Date 1979-01-01
- Texas
- Library Collection RecordFew brownspine pricklypear were immediately killed by the direct effects of fire. Most plants resprouted after burning in the spring, but mortality averaged 70% by the end of the fourth year after…Publication Date 1980-03-01
- Texas
- Library Collection RecordEffects of two mechanical brush manipulation treatments (root-plowing and front-end stacking) with and without grass seeding and with and without nitrogen fertilization on herbaceous forage…Publication Date 1979-07-01
- Texas
- Library Collection RecordDuring August 1961 in Kleberg County, Texas, cotton rat density was four times greater on areas planted to exotic grasses than on native rangeland, and density was six times greater on rootplowed…Publication Date 1979-09-01
- Texas
- Library Collection RecordRegression models were developed to predict relative abundance of annual broomweeds on a Texas rangeland as a function of selected climatic factors. Based on 16 years' data, above-average…Publication Date 1979-09-01
- Texas
- Library Collection RecordFrom October 1972, through September 1974, rumen analyses were used to determine food habits of white-tailed deer on the H.B. Zachry Randado Ranch in south Texas. Sixty-nine plant taxa were…Publication Date 1979-05-01
- Plains
- Texas
- Library Collection RecordSelection of woody plants by nesting nongame birds was investigated in burns of several different ages in a honey mesquite-tobosagrass community in central Texas. Lotebush and honey mesquite were the…Publication Date 1978-11-01
- Texas
- Library Collection RecordBiomass estimates were made with regression techniques using crown volume and weight relationships. The log-log function yielded the highest coefficient of determination for Vasey shin oak, plateau…Publication Date 1979-03-01
- Texas
- Library Collection RecordWhite-tailed deer tended to evacuate a 1,800-ha, mixed-brush pasture during 5 months following aerial strip-spraying in May with 2,4,5-T + picloram (1:1) at 0.56 kg/ha and 1.12 kg/ha and in two…Publication Date 1978-09-01
- Texas
- Library Collection RecordField spectroradiometric measurements for canopy reflectances of three dominant south Texas woody plants (cenizo, honey mesquite, live oak) were used successfully to predict their color infrared film…Publication Date 1977-11-01
- Texas
- Library Collection RecordNests of ground-nesting lark sparrows were censused on seven different ages of burns in a honey mesquite- tobosagrass community in central Texas. Number of nests were negatively correlated with…Publication Date 1977-07-01
- Texas
- Library Collection RecordBobwhite quail preferred lotebush as loafing cover over all other woody plants, although honey mesquite was also used during summer months. Most (88.3%) lotebushes on the study area were resprouts of…Publication Date 1978-01-01
- Texas
- Library Collection RecordPredator control was conducted in South Texas during January-July 1975 and 1976 to determine its effects on productivity and survival of Angora goats. The control effort, when compared to an area…Publication Date 1978-05-01
- Texas
- Library Collection RecordThe time required for re-establishment of pre-fire nitrogen levels in tobosagrass (Hilaria mutica) communities in the Rolling Plains of West Texas was studied on five different ages of burns over a 2…Publication Date 1977-09-01
- Texas
- Library Collection RecordOne hundred thirty-two coyotes, 27 opossums, 22 skunks, 18 bobcats, 15 raccoons, 12 badgers, and one gray fox were killed on a 1,550-ha area of mixed brush rangeland in South Texas during January-…Publication Date 1977-11-01
- Texas
- Library Collection RecordBoth honey mesquite density and percent of plants dead the year of aerial spraying with 2,4,5-T proved to be major factors influencing perennial grass production. Sites with sparse honey mesquite…Publication Date 1978-03-01
- Texas
- Library Collection RecordA 2-year study of the effects herbicide spraying, and particularly, prescribed burning might have on mourning dove (Zenaida macroura) nesting ecology in rangelands infested with mesquite revealed…Publication Date 1976-05-01
- Texas
- Library Collection RecordAerial spraying 80% of a mature honey mesquite brushland in alternating strips with 2,4,5-T + picloram (1:1) at 1.12 kg/ha did not adversely affect populations of white-tailed deer, nilgai antelope,…Publication Date 1977-03-01
- Texas
- Library Collection RecordDouble chaining followed by raking and stacking heavy stands of south Texas mixed brush was more effective than double chaining alone or chaining one way, based on comparative degree of brush control…Publication Date 1976-09-01
- Texas
- Library Collection RecordIndividual-plant treatments with picloram at 0.5 lb/100 gal controlled redberry juniper when applied as wetting sprays to foliage from April through September. Picloram pellets as an individual plant…Publication Date 1976-11-01
- Texas
- Library Collection RecordBotanical and chemical compositions of the summer diets of esophageal-fistulated steers were determined on a deep hardland shortgrass range site of the Texas High Plains. Consumption of belvedere…Publication Date 1976-09-01
- Texas
- Library Collection RecordFour cool-season species were grown for 1 year under controlled conditions simulating a dry, a typical, and a wet fall planting season in far west Texas. Crested wheatgrass and Russian wildrye had…Publication Date 1976-09-01
- Texas
- Library Collection RecordForage production under five different grazing management schemes was compared after 20 years of treatment in the Edwards Plateau region of Texas. Results from this study showed that: (1) a more…Publication Date 1976-05-01
- Texas
- Library Collection RecordFecal pellets were taken from black-tailed jackrabbits and desert cottontail rabbits for studies of rates of natural degradation. Microscopic analyses of fecal samples showed a significant difference…Publication Date 1977-05-01
- Texas
- Library Collection RecordBased on this research and other work that has been reported, honey mesquite is very difficult to kill with fire on the High Plains and along river bottoms in the Rolling Plains. On upland sites in…Publication Date 1976-11-01
- Texas
- Library Collection RecordPrescribed burning was applied to six miniwatersheds that were each paired with an unburned watershed. Erosion losses, runoff, and water quality were unaffected on level areas, but adverse effects…Publication Date 1976-07-01
- Texas
- Library Collection RecordOld World bluestem and Selection 75 Kleingrass established stands more rapidly and produced more topgrowth the year of seeding than did Bell Rhodesgrass or green sprangletop at three locations in…Publication Date 1976-05-01
- Texas
- Library Collection RecordForage availability was determined at six intervals from December through April on the Texas Coastal Prairie. Warm-season perennial grasses were the dominant class of available forage. Forbs were not…Publication Date 1977-03-01
- Texas
- Library Collection RecordFour distance sampling techniques; point-center-quarter (PCQ), random pairs (RP), nearest neighbor (NN), and closest individual (CI) were compared to total counts to determine accuracy of density and…Publication Date 1975-03-01
- Texas
- Library Collection RecordTotal nonstructural carbohydrate (TNC) concentrations in the root system of sand shin oak (Quercus havardii) were analyzed from January, 1972, through December, 1973. Effects of shredding on root…Publication Date 1975-11-01
- Texas
- Library Collection RecordSimultaneous shredding and spraying of honey mesquite were studied in the Rolling Plains of Texas. Mature trees were shredded and sprayed monthly, May, 1972, through October, 1972 (September was…Publication Date 1975-11-01
- Texas
- Library Collection RecordWhite-tailed deer (Odocoileus virginianus) were observed by spotlight in the Rolling Plains of Texas to determine deer use of habitats and how deer were influenced by brush control practices and…Publication Date 1975-03-01
- Texas
- Library Collection RecordThe desert termite, Gnathamitermes tubiformans, is an important insect on rangelands in the southwestern United States. Population densities of this insect averaged 2139/m2 in the upper 30 cm of soil…Publication Date 1975-09-01
- Texas
- Library Collection RecordRisk and uncertainty were explicitly included in a ranch decision model by the use of quadratic programming. Alternative ranch organizations are presented for a typical ranch firm in the Rolling…Publication Date 1975-07-01
- Texas
- Library Collection RecordMima mounds are found in many areas west of the Mississippi River. The polygenetic origin of mounds in different areas is commonly accepted. The formation of these mounds in the Blackland Prairie may…Publication Date 1975-05-01
- Texas
- Library Collection RecordClipping shortgrass range in Texas at 2-week intervals gave 94% more forage yield than fall harvest. Clipping treatments had little effect on ground cover and plant composition. Yield was shown to be…Publication Date 1975-05-01
- Texas
- Library Collection RecordPeriodic tropical storms may cause large areas of Texas coastal rangeland to be inundated for several years. The range sites usually support Acacia-Prosopis communities prior to flooding with…Publication Date 1975-07-01
- Texas
- Library Collection RecordSeedling emergence and vigor of buffelgrass (Cenchrus ciliaris L.), an introduced species with widespread adaptability for revegetation in South Texas, were regulated by soil texture and planting…Publication Date 1975-05-01
- Texas
- Library Collection RecordAn evaluation was made of current species composition, production and 25-year vegetation trends within an exclosure on the Texas A&M University Agricultural Research Station at Sonora, Texas.…Publication Date 1976-01-01
- Texas
- Library Collection RecordBitterweed can be effectively controlled in central Texas with 2,4-D (2,4-Dichlorophenoxyacetic acid) amine between November 1 and January 15. To minimize damage to associated annual forbs, 2,4-D…Publication Date 1974-09-01
- Texas
- Library Collection RecordThe controversy regarding golden eagle predation on lambs in the Southwest was addressed using winter eagle population data from Texas and eastern New Mexico, eagle food habits information, and lamb…Publication Date 1975-01-01
- Texas
- New Mexico
- Library Collection RecordThe long-term effect of fire was studied on the major grass species of west Texas when the winter-spring precipitation was 0 to 40% above normal. This and other studies indicate that sideoats grama…Publication Date 1974-11-01
- Texas
- Library Collection RecordSeeding success was evaluated on 62 ranches in Texas to compare relative success and costs of various treatments as affected by range site. Effects of precipitation and temperature were studied.…Publication Date 1974-03-01
- Texas
- Library Collection RecordCoyote diets were determined from scat and stomach analyses over a two-year period in an area centered in the Rolling Plains region of Texas. Fruit from 9 species of native plants were the most…Publication Date 1975-01-01
- Texas