• Seedling Survival on Erosion Control Treatments in a Salt Desert Area

      Wein, R. W.; West, N. E. (Society for Range Management, 1971-09-01)
      Counts of seeded crested wheatgrass (Agropyron cristatum) and volunteer species were made on gully plugs and contour furrows in the spring to determine emergence and in the summer to determine survival rates. Soil surface moisture was measured 2 and 7 days following summer rain storms. Many seedlings emerged in the spring in response to winter and early spring precipitation. This moisture was quickly depleted. The retention of moisture from summer storms determined the seedling survival pattern around the structures. Drowning was apparent in gully plug bottoms, while slopes of the structures retained little water during the storms. The combination of irregular rainfalls, high evaporation rates, and poor soil infiltration rates reduced the effectiveness of summer rains. Only at the high water line of the gully plug retention dam and at the bottom of the furrows was there enough soil moisture to benefit seedlings.
    • Some Soil Age-Range Vegetation Relationships

      White, E. M. (Society for Range Management, 1971-09-01)
      Soil texture and development determine the kinds of range plants that grow in west central South Dakota. Bluestems, sideoats grama, and prairie sandreed are important species on very weakly developed soils but are less important on more strongly developed soils than cool-season mid- and tall-grasses. Western wheatgrass, green needlegrass, and buffalograss are important on well developed soils except those that are very coarse textured where needleandthread is important. Soil structure and fertility changes probably are the important factors affecting vegetation as a soil develops.
    • Stocking Rangelands on the Rio Puerco in New Mexico

      Aldon, E. F.; Garcia, G. (Society for Range Management, 1971-09-01)
      A stocking table developed on an experimental range area in the Rio Puerco drainage can be used to determine stocking rates in animal units per section. Estimates are based on perennial grass forage production and utilization percentages and are applicable to a large portion of semidesert ranges in central New Mexico.
    • Supplementing Pine-Wiregrass Range With Improved Pasture In South Georgia

      Lewis, C. E.; McCormick, W. C. (Society for Range Management, 1971-09-01)
      Native forage on pine-wiregrass ranges is low in quality and poor in palatability most of the year. Management techniques to overcome these problems and to utilize this resource are needed. Acceptable beef production can be achieved with proper combination of burned-unburned range during spring and summer when accompanied by adequate feed during fall and winter. Combining use of improved pasture at the rate of 0.6 acre per cow with native range during the spring-summer grazing period or during only the summer boosts calf weights and maintains cow weights from year to year over weights of cattle grazing range-only during spring and summer./El forraje que proporcionan los pastizales nativos en bosques de pino es bajo de calidad y palatabilidad durante la mayor parte del año. La producción de bovino de carne es aceptable con una combinación de pastos quemados y sin quemar durante la primavera y el verano si los animales son suplementados durante el otoño y el invierno. Sin embargo, si se pastorea pastizal nativo y 0.6 acres por vaca diario dallisgrass (Paspalum dilatatum) y zacate Bahía (P. notatum) durante la época de pastoreo de primavera, verano o un verano solamente, si aumenta el peso de las vacas y el de los becerros al destete.
    • Utilization of the Major Plant Communities in the Similkameen Valley, British Columbia

      McLean, A.; Lord, T. M.; Green, A. J. (Society for Range Management, 1971-09-01)
      The plant communities of the ponderosa pine zone in southern British Columbia offer best returns from grazing by domestic and wild ungulates. The communities of the douglasfir zone should usually be considered integrated-use areas, having significant values for both grazing and timber production. The subalpine fir zone has its main value for timber production although grazing values usually persist for many years in the lower part of the zone after logging or burning. However, the upper part of the above zone is suited mainly for grazing. Although the alpine tundra has very limited forage production it sometimes provides summer range for bighorn sheep. Since the climate is usually favorable below 3000 feet elevation, arable agriculture should be considered where soils are not restrictive.
    • Winterfat Seedlings Emerge Best from Shallow Seeding, Moderately Dry Soil

      Springfield, H. W. (Society for Range Management, 1971-09-01)
      Seeds of winterfat (Eurotia lanata) were planted at four depths in three soils held at five moisture levels. Emergence was best from the 1/16-inch depth, and when soil moisture was nearer field capacity than saturation.