scholarly journals Effects of Livestock Grazing on Sediment Production, Edwards Plateau of Texas

1984 ◽  
Vol 37 (4) ◽  
pp. 291 ◽  
Author(s):  
G. R. McCalla ◽  
W. H. Blackburn ◽  
L. B. Merrill
Keyword(s):  
Livestock Grazing ◽  
Edwards Plateau ◽  
Sediment Production

Winter Logging and Erosion in a Ponderosa Pine Forest in Northeastern Oregon

1993 ◽  
Vol 8 (1) ◽  
pp. 19-23 ◽  
Author(s):  
John D. Williams ◽  
John C. Buckhouse
Keyword(s):  
Ponderosa Pine ◽  
Ground Cover ◽  
Extended Period ◽  
Frozen Soil ◽  
Livestock Grazing ◽  
Soil Horizon ◽  
Simulated Rainfall ◽  
Infiltration Capacity ◽  
Sediment Production ◽  
Runoff Plots

Abstract Trees are often harvested in small woodlots for the dual purpose of generating revenue and expanding or enhancing woodland pasture for livestock and wildlife. Following such an effort, in a two-part study we compared the runoff and erosion potential in harvested and nonharvested sites. The tree harvest was conducted on snow and frozen soil and used prescribed skid trails. In the first part of the study, runoff plots were installed and monitored for 2 winters and 1 summer to determine if runoff and erosion resulting from natural precipitation events occurred from either of two treatments; a harvested site or a comparable nonharvested site. In the second part of the study, simulated rainfall was applied to a separate set of runoff plots to determine endpoint infiltration capacity and to make projections of infiltration and erosion response to anticipated livestock grazing. Rainfall was applied to each plot at three subsequent levels of ground cover manipulation: undisturbed vegetation, clipped vegetation, and vegetation and organic soil horizon removed. No runoff or sediment production was recorded between September 1986 and December 1987 in either harvested or nonharvested treatments in the plots monitoring response to natural rainfall. In addition, runoff and sediment production did not occur as a result of simulated rainfall in either site regardless of the ground cover treatment. The same result was obtained when rainfall was applied for an extended period and at an increased rate of application. The lack of runoff can be attributed to site conditions, especially the well-developed biomass in the upper soil horizons, and the method and season of logging. If the tree harvest procedures are repeated in similar sites, similar results may be expected. West. J. Appl. For. 8(1):19-23.

scholarly journals Effects of Livestock Grazing on Infiltration Rates, Edwards Plateau of Texas

1984 ◽  
Vol 37 (3) ◽  
pp. 265 ◽  
Author(s):  
G. R. McCalla ◽  
W. H. Blackburn ◽  
L. B. Merrill
Keyword(s):  
Livestock Grazing ◽  
Edwards Plateau ◽  
Infiltration Rates

scholarly journals 125 Tick burden observed on cattle and sheep during winter season on the Edwards Plateau of Texas

2019 ◽  
Vol 97 (Supplement_1) ◽  
pp. 53-54 ◽  
Author(s):  
Samantha R Hays ◽  
Pete D Teel ◽  
Heath D Starns ◽  
Nick Garza ◽  
Robert Moen ◽  
...  
Keyword(s):  
Production Systems ◽  
Bos Taurus ◽  
Ixodes Scapularis ◽  
Winter Season ◽  
Well Being ◽  
Amblyomma Americanum ◽  
Livestock Grazing ◽  
Edwards Plateau ◽  
Dermacentor Albipictus ◽  
Tick Burden

Abstract Multi-species livestock grazing is a common practice in the Edwards Plateau of Texas. Winter demands on livestock are high because of forage quality and quantity limitations and stresses of tick parasitism. Our objective was to assess winter-active tick burden on livestock and gauge effectiveness of a pour-on synthetic pyrethroid acaricide. At the Sonora AgriLife Station, 26 Bos taurus crossbred heifers (260 ± 6 kg) and 28 Dorper ewes (42 ± 1 kg) were maintained on 97.125 hectares of rangeland. Tick burden was assessed by individual animal inspection on: 12-18-2017, 01-05-2018, 01-122018, 01-26-2018, 02-09-2018, 02-16-2018, 02-23-2018, and 03-08-2018. Trial 1 acaricide treatment was applied 01-05-2018 on heifers and ewes chosen randomly to serve in the non-treated control (13 heifers; 14 ewes) or acaricide-treated (13 heifers; 14 ewes) groups. Trial 2 acaricide treatment was applied 02-16-2018 using a switchback design. Tick species included Amblyomma americanum, Dermacentor albipictus, and Ixodes scapularis. Tick burden differences were determined by analysis of variance procedures. There were no differences in tick burden on heifers or ewes prior to acaricide application for Trial 1 nor Trial 2 (P > 0.276, 0.002 ± 0.46; P > 0.354, 0.002 ± 0.11 and P > 0.606, 0.002 ± 0.05; P > 0.705, 0.001 ± 1.34, respectively). There were no differences (P > 0.149) between acaricide-treated (0.519 ± 0.05) and non-treated control (0.644 ± 0.07) heifers in Trial 1 nor Trial 2 (0.759 ± 0.07 and 0.404 ± 0.04, respectively). Similarly, there were no differences (P > 0.997) between acaricide-treated (2.964 ± 0.31) and non-treated control (2.965 ± 0.3) ewes in Trial 1 nor Trial 2 (1.015 ± 0.13 and 5.563 ± 0.45, respectively). We conclude ticks challenge the well-being and production in overwintering livestock in the Edwards Plateau. Alternative acaricides should be evaluated for efficacy and efficiency in these production systems

scholarly journals Some Vegetation Responses to Selected Livestock Grazing Strategies, Edwards Plateau, Texas

1988 ◽  
Vol 41 (2) ◽  
pp. 108 ◽  
Author(s):  
Thomas L. Thurow ◽  
Wilbert H. Blackburn ◽  
Charles A. Taylor
Keyword(s):  
Livestock Grazing ◽  
Edwards Plateau ◽  
Vegetation Responses ◽  
Grazing Strategies
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