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Persistence Of Phalaris Aquatica L. In Response To Grazing, R A. Culvenor
Persistence Of Phalaris Aquatica L. In Response To Grazing, R A. Culvenor
IGC Proceedings (1993-2023)
Cultivars of phalaris (Plialaris aquatica L.) bred in Australia for seedling vigour and winter activity are reported to be less persistent in response to heavy_ grazing than the original introduction, cv. Australian. In an experiment comparing the morphological characters of cultivars, Australian was shown to possess a morphology well adapted to grazing. In contrast, the bred cultivars formed more erect pastures with low basal area, more prone to invasion by annual grasses and retaining less leaf area after grazing. In a second experiment, sheep displayed preference during July for grazing the winter-active cultivar Sirosa over cv. Australian, probably because …
Sward Height In Grazing Management: Vertical Profiles In Forage Quality, J E. Johnston, A Singh, E A. Clark
Sward Height In Grazing Management: Vertical Profiles In Forage Quality, J E. Johnston, A Singh, E A. Clark
IGC Proceedings (1993-2023)
Vertical and temporal trends in herbage yield and quality were assessed in a study sown in 1989 near Elora, Ontario. In a replicated field trial with 0.1 ha paddocks, Hereford heifers rotationally grazed 2 swards to each of 2 residual grazing heights, namely, SO and 100 mm, with a requisite 200-2S0 mm entry height. Profiles in yield and in in vitro organic mailer digestibility (IVOMD) were developed from 6, 1500 cm2 quadrats per paddock, which were subjected to vertically stratified clipping, using sheep shears with a vacuum attachment. In 1990, obliging entry. at 200-2S0 mm stabilised herbage organic matter on …
Sward Height In Grazing Management: Species Adaptation, A Singh, J E. Johnston, E A. Clark
Sward Height In Grazing Management: Species Adaptation, A Singh, J E. Johnston, E A. Clark
IGC Proceedings (1993-2023)
Under continental, northern conditions, yield potential of species such as perennial ryegrass (Loli11111 pere,me L.) and white clover (Trifolium repe,is L.) is considered to be inferior to that of taller, coarser species such as orchardgrass, bromegrass, timothy and alfalfa. However, recent species evaluation bas stressed management regimes characteristic of conserved feed rather than pasture production, In a replicated trial, species performance and persistence in mixture were evaluated in response to sward height-based grazing management. Starling in 1990, 2 swards constructed predominantly of fine- or coarse-stemmed grasses were grazed rotationally by cattle, using a common 20-25 cm entry height and a …
Pasture Composition, As Affected By Grazing Management, And Its Effects On Milk Production By Grazing Dairy Cows, C W. Holmes, C J. Hoogendoorn, V R. Rugambwa, M P. Ryan, A.C P. Chu
Pasture Composition, As Affected By Grazing Management, And Its Effects On Milk Production By Grazing Dairy Cows, C W. Holmes, C J. Hoogendoorn, V R. Rugambwa, M P. Ryan, A.C P. Chu
IGC Proceedings (1993-2023)
Prcgrazing herbage mass was controlled al higher or lower levels by grazing management (intensity or frequency). Three of the experiments used ryegrass (Lolium perenne L.) and white clover (Trifolium repens L.) swards, while the fourth included Grasslands Matua prairie grass (Bromus willdenowii Kunth.) and white clover swards. The high mass swards generally contained higher proportions of dead matter and stem, and the herbage from these swards was always less digestible. When offered a common daily herbage allowance, cows grazing on the high mass swards produced less milk than those on the low mass swards. The data suggest …
Native Grasses: Their Distribution And Management In South-Eastern Australia, P M. Dowling, D L. Garden, P C. Simpson, D Eddy, D R. Kemp
Native Grasses: Their Distribution And Management In South-Eastern Australia, P M. Dowling, D L. Garden, P C. Simpson, D Eddy, D R. Kemp
IGC Proceedings (1993-2023)
The economic survival of landholders depends on improving net returns. On the Tablelands of New South Wales, where substantial tracts of the original native perennial grasses still remain, an opportunity to do this exists by making belier use of these pastures. Over 150 years of grazing by sheep and cattle is considered to have resulted in the evolution of more grazing tolerant and nutrientresponsive grasses. This paper reports on the approach taken in developing a native grass strategy for tableland country, A survey sought to delineate the distribution of the native grass species under grazed conditions, while the feasibility of …
Grazing Management For The Control Of Vulpia Spp. In Pastures, C E. Jones, R.D B. Whalley
Grazing Management For The Control Of Vulpia Spp. In Pastures, C E. Jones, R.D B. Whalley
IGC Proceedings (1993-2023)
The effect of strategic grating in spring and autumn on seed production, recruitment and seedling survival of Vulp/11 spp. was assessed in experiments at 2 sites near Armidale on the northern Tablelands of New South Wales. V11lpia spp. field populations in 1992 in autumn-grazed plots which had been heavily grazed in the previous spring were reduced 97.391, at Site 1 and 91,291, at Site 2 in comparison with similar plots which had not been grazed in the previous spring. These reductions were greater than could have been obtained by either winter cleaning or spraytopping with herbicide, the currently recommended management …
Adopting New Technologies For Grazing Lands: The Role Of Decision Systems, John A. Ludwig, Steve Marsden
Adopting New Technologies For Grazing Lands: The Role Of Decision Systems, John A. Ludwig, Steve Marsden
IGC Proceedings (1993-2023)
The management of Australia's arid and semi-arid grazing lands involves the consideration of many complex and interconnected issues related to both ecological and economic factors. Climates are highly variable across these lands and markets fluctuate widely; decision making is . difficult at the best of times, As new grazing and land management technologies become available through research organisations, such as CSIRO, the adoption of these technologies is a prime concern, Traditionally, State extension services provide this information to grazing land managers, which has proven effeclive for transferring information about current short-term problems (e,g,, locust plagues) and easy to apply products …
Grazing Management Of Elephant-Grass For Milk Production, F Deresz, L L. Matos
Grazing Management Of Elephant-Grass For Milk Production, F Deresz, L L. Matos
IGC Proceedings (1993-2023)
The objectives of these experiments were to study the effects of three resting periods (RP) of elephant-grass pasture on milk production and composition of Holstein-Zebu cows. These trials were carried out during two consecutive rainy seasons (December to May) using 24 cows in each year. They were randomly assigned by blocks according to milk yield and live weight (LW) to four treatments: 30- day RP with no concentrate (30N), 30-day RP with concentrate (30C), 36 and 45-day RP with C (36C and 45C) in the first year. In the second year the treatments were: 30C, 30N, 36N and 45N. Concentrate …
Influence Of Grazing Management Of Autumn Soil Water Deficit Below Perennial Grass Pastures, C A. Clifton, P M. Schroder, J F. Graham
Influence Of Grazing Management Of Autumn Soil Water Deficit Below Perennial Grass Pastures, C A. Clifton, P M. Schroder, J F. Graham
IGC Proceedings (1993-2023)
An assessment was made of the influence of a Phalaris based pasture which was either continuously stocked, rotationally grazed or spelled during summer on the autumn soil water deficit. Soil remained close to saturation at 120 cm under continuously grazed pasture. Rotationally grazed and summer spelled pastures maintained the soil profile at 120 cm in a dry state during summer and autumn. Differences between years and sites could be partly explained by differences in summer rainfall, solar radiation and the amount of green plant material which grew when stock were excluded over the summer-autumn period. Periodic spelling appears to improve …
The Effect Of Seasonal Deferred Grazing On Porto Cocksfoot, R P. Thompson, A Avery
The Effect Of Seasonal Deferred Grazing On Porto Cocksfoot, R P. Thompson, A Avery
IGC Proceedings (1993-2023)
The objective of this study was to determine whether seasonal deferred grazing regimes could be used to increase the composition of cocksfoot (Dactylis glomerata L) in perennial pastures growing in temperate Australia. The experiment was conducted over three years at two sites; one in Victoria and the other in Tasmania, Australia. Relative to the control of continuous grazing, deferred grazing in spring reduced the amount of cocksfoot in the sward. Conversely, deferred grazing in summer increased the amount of cocksfoot present. It is concluded that deferred grazing can be used to change the amount of cocksfoot in a pasture, …
The Effect Of Seasonal Deferred Grazing On Phalaris (Phalaris Aquatica) In Temperate Australia, A L. Avery, J F. Graham
The Effect Of Seasonal Deferred Grazing On Phalaris (Phalaris Aquatica) In Temperate Australia, A L. Avery, J F. Graham
IGC Proceedings (1993-2023)
The aim of this study was to determine the effects of deferred grazing strategies on phalaris (Phalaris aquatica) composition in both new and established pastures in temperate Australia. The experiment was conducted over three years at three sites; two in southern Victoria and one in northern Victoria. Relative to the control of continuous grazing all treatments maintained phalaris composition. At two sites winter deferment of grazing increased phalaris composition. It is concluded that deferred grazing of phalaris over the autumn, winter and spring will increase phalaris composition. The critical length of the grazing deferment and timing requires further …
The Effect Of Grazing Management Options On The Persistence Of Perennial Ryegrass In The Temperate Winter Rainfall Zone Of Southern Australia, John F. Graham, Tim Prance, Robin Thompson
The Effect Of Grazing Management Options On The Persistence Of Perennial Ryegrass In The Temperate Winter Rainfall Zone Of Southern Australia, John F. Graham, Tim Prance, Robin Thompson
IGC Proceedings (1993-2023)
This study examined grazing management options on perennial ryegrass (Lolium perenne) based pastures to determine if perennial ryegrass could be increased in a degraded pasture, or maintained in a newly sown pasture. Study sites were at Hamilton and Cavendish, Victoria; Delamere, South Australia, and Ross and Parattah, Tasmania. Average rainfall is 500mm at Ross, 575mm at Parattah, 700mm at Hamilton, 650mm at Cavendish and 900mm at Delamere. At all sites, 8 core grazing management treatments were imposed, and up to 4 “local options.” Changes in botanical composition indicate that grazing management can influence the amount of perennial ryegrass …
Cattle Weight Gain And Sward-Animal Nitrogen Relationships In Grazed Hemarthria Altissima Pastures, L E. Sollenberger, G F. Lima, J F. Holderbaum, W E. Kunkle, J E. Moore, A C. Hammond
Cattle Weight Gain And Sward-Animal Nitrogen Relationships In Grazed Hemarthria Altissima Pastures, L E. Sollenberger, G F. Lima, J F. Holderbaum, W E. Kunkle, J E. Moore, A C. Hammond
IGC Proceedings (1993-2023)
Limpograss (Hemarthria altissima [Poir.] Stapf et C.E. Hubb.) in vitro digestion is greater than most perennial grasses adapted to Florida. Weight gain of cattle grazing limpograss has been lower than expected due in part to low herbage N concentration. Experiments were conducted on limpograss pastures to assess N fertilization, overseeding of the legume aeschynomene (Aeschynomene americana L), and feeding of N supplements to cattle as means of overcoming this limitation. Greater N fertilization, overseeding aeschynomene, and supplementation (corn-urea mixtures) increased weight gain 0.30, 0.23, and 0.24-0.35 kg d-1, respectively, over control treatments. Herbage digestible organic matter:crude protein ratio …
The Grazing Manager: A New Application Of The Carrying Capacity Concept, M M. Kothmann, R T. Hinnant
The Grazing Manager: A New Application Of The Carrying Capacity Concept, M M. Kothmann, R T. Hinnant
IGC Proceedings (1993-2023)
Common approaches to evaluating carrying capacity are stocking rate trials for research and trial and error adjustments for ranchers. These approaches are inadequate as operational decision guides for grazing management. The Grazing Manager (TGM) is a generalized management level dynamic model that provides a new approach to stocking rate analysis. Grazing pressure is integrated over time with a function called pasture demand ratio (PDR) which is based on cumulative forage demand relative to cumulative forage production within a forage year. PDR is a dynamic variable that standardizes the forage balance relationship and makes the analysis of stocking rate data more …
Effects Of Grazing Frequency And Soil Water Supply On Basal Cover Of Four Perennial Grasses, A J. Bowcher, J M. Virgona
Effects Of Grazing Frequency And Soil Water Supply On Basal Cover Of Four Perennial Grasses, A J. Bowcher, J M. Virgona
IGC Proceedings (1993-2023)
Changes in basal area and soil water extraction were examined in four perennial grasses, Phalaris aquatica cv. Sirosa, Dactylis glomerata cv. Porto, Festuca arundinacea cv. Demeter and Danthonia richardsonii cv. Tarana. Treatments were factorially arranged with four species, three different grazing intervals (2-, 5- and 8- weeks) and two watering regimes (rainfed and supplementary water)and were imposed from early spring to mid-autumn in 1994/5 and 1995/6. In 1994/5, the basal area of all species declined except for the native, D. richardsonii under rainfed and watered conditions. The grazing treatments had no effect on changes in basal area in this …
Sustainable And Conventional Grazing Systems For Beef Steers, V G. Allen, J P. Fontenot, W L. Daniels, A M. Zajac, G K. Evanylo, R R. Youngman, J Luna
Sustainable And Conventional Grazing Systems For Beef Steers, V G. Allen, J P. Fontenot, W L. Daniels, A M. Zajac, G K. Evanylo, R R. Youngman, J Luna
IGC Proceedings (1993-2023)
A conventional grazing and crop production system and a sustainable system with integrated grazing and crop production were compared in a farm-scale experiment. The objective was to improve sustainability through improved nutrient management and reduced off-farm chemical use while retaining productivity and profitability. Each system involved 48 steers per year and 32 hectares of crop and pasture land in four replications. Daily gains and final weights were higher (P<0.05) for steers in the Sustainable System than the Conventional System but required more supplemental hay feeding. Initially, more forage was harvested from the Sustainable System, but as grazing management improved, more forage was harvested through grazing, and harvested forage became similar between the systems. Pesticide requirements were lower and N fertilizer use was reduced more than 50% for the Sustainable System. The Sustainable System maintained total crop and livestock production potential and was at least as profitable as the Conventional System.
A Village Approach In Rehabilitation Of Degraded Pastures On Marginal Lands In West Asia, A E. Osman, S Christiansen, A Nassar, F Ghassali
A Village Approach In Rehabilitation Of Degraded Pastures On Marginal Lands In West Asia, A E. Osman, S Christiansen, A Nassar, F Ghassali
IGC Proceedings (1993-2023)
The objectives of the present study are to demonstrate techniques of native pasture improvement to farming communities and to assess their ability to apply pasture management, including deferred grazing. The work was conducted in four villages in north west Syria and in one location in Beka’a, Lebanon. The results indicated significant improvement on pasture productivity and the farmers showed a positive attitude towards adopting the new practices.
How Do Artemisia Capillaris Population Respond To Grazing Management And Rain Reduction?, Li-Yuan Shi, Fu-Jiang Hou, Zhen Wang
How Do Artemisia Capillaris Population Respond To Grazing Management And Rain Reduction?, Li-Yuan Shi, Fu-Jiang Hou, Zhen Wang
IGC Proceedings (1993-2023)
Climate and human activities, such as drought event and livestock grazing, generally coupled to influence the structure and function of grassland ecosystems. However, most of previous studies focused on the isolated effects of grazing or drought on grassland ecosystems, with little attention paid to the combined effects of them. Further, we know little about how plants respond to grazing and drought at the population level. We conducted a grazing regime (enclosure, stop grazing, and heavy grazing) and drought manipulation experiment in a typical steppe to explore how grassland plants response to ongoing drought and grazing regimes at the population level. …
Spring Grass Availability And Silage Supplementation Impact On Dry Matter Intake And Enteric Methane Emissions In Grazing Dairy Cattle, M. Kennedy, S. Walsh, T. M. Boland, M. Egan
Spring Grass Availability And Silage Supplementation Impact On Dry Matter Intake And Enteric Methane Emissions In Grazing Dairy Cattle, M. Kennedy, S. Walsh, T. M. Boland, M. Egan
IGC Proceedings (1993-2023)
Enteric methane (CH4) emissions were measured in forty spring calving cows offered one of two (n=20) contrasting diets (High Grass; HG, Low Grass; LG) over 10 weeks in early lactation (8th February – 18th April 2021). All cows were blocked for breed and parity and balanced on milk production, economic breeding index (EBI), bodyweight and body condition score and randomly allocated to treatments. The HG grazing treatment cows were offered their full daily nutrient requirement from grazed grass and concentrate with no silage supplementation. The LG grazing treatment cows were offered a restricted (~60%) amount of their daily nutrient requirement …
Forage Production Is Not Changed In Dwarf Elephantgrass Swards Managed In A Wide Range Of Pre-Grazing Canopy Heights, V. Y. M. Moncada, K. C. Vargas, D. A. Barreta, D. S. Comassetto, F. C. S. Gislon, E. R. Ribeiro, D. Moraes, A. F. Sbrissa
Forage Production Is Not Changed In Dwarf Elephantgrass Swards Managed In A Wide Range Of Pre-Grazing Canopy Heights, V. Y. M. Moncada, K. C. Vargas, D. A. Barreta, D. S. Comassetto, F. C. S. Gislon, E. R. Ribeiro, D. Moraes, A. F. Sbrissa
IGC Proceedings (1993-2023)
Height corresponding to the critical leaf area index (LAI) has been successfully used to define pre-grazing management targets in pastures subjected to intermittent stocking. However, studies on short/stoloniferous grasses have demonstrated that it is possible to manage pastures at heights below those corresponding to the critical LAI (with a threshold grazing height of approximately 65% of those corresponding to the critical LAI) and achieve a similar forage yield, provided that the severity of defoliation does not exceed 50 percent of the pre-grazing height. In this study, we hypothesized that in tall tussock grasses (such as elephant grass), the amplitude of …
Building Partnerships To Address Social And Technological Challenges To Enhance Farm Profitability And Improve Water Quality Through Better Grassland Management, C. C. Stafford, R. A. Clark, L. Ritchie, J. Dudding, G. Pent, J. Fike, J. Benner, C. Swanson, S. Baker, T. Mize, V. Temu, K. Payne, D. Gill, D. Mullins, R. Mcguire, C. Teutsch, W. Thomason, A. Grev, P. Blevins, T. P. Clarke, M. Poore, M. Booher, T. Stanley, G. Halich, J. Bovay, S. Jones, K. Love, A. Hilliard, A. Byington, E. Mullins, L. Haugen
Building Partnerships To Address Social And Technological Challenges To Enhance Farm Profitability And Improve Water Quality Through Better Grassland Management, C. C. Stafford, R. A. Clark, L. Ritchie, J. Dudding, G. Pent, J. Fike, J. Benner, C. Swanson, S. Baker, T. Mize, V. Temu, K. Payne, D. Gill, D. Mullins, R. Mcguire, C. Teutsch, W. Thomason, A. Grev, P. Blevins, T. P. Clarke, M. Poore, M. Booher, T. Stanley, G. Halich, J. Bovay, S. Jones, K. Love, A. Hilliard, A. Byington, E. Mullins, L. Haugen
IGC Proceedings (1993-2023)
With 2.1 million acres of pastureland and 1.25 million acres of hay land in Virginia, the rural Virginia landscape is predominately grassland. These lands form the base of the $3.96 billion-dollar livestock and dairy industry in Virginia. Managing these livestock in a profitable manner for farmers and beneficial to the environment is important. A cultural tradition with roots in colonial times has been to run animals in large fields year-round throughout Virginia. Livestock often graze from spring until fall (about 220 days), and farmers feed hay the remainder of the year. Spikes in the cost of fuel, fertilizer, and equipment …
Canopy Characteristics And Growth Rate Of Bahiagrass Monoculture And Mixtures With Rhizoma Peanut, N. Caram, Lynn E. Sollenberger, Marcelo O. Wallau, C. H. Wilson
Canopy Characteristics And Growth Rate Of Bahiagrass Monoculture And Mixtures With Rhizoma Peanut, N. Caram, Lynn E. Sollenberger, Marcelo O. Wallau, C. H. Wilson
IGC Proceedings (1993-2023)
Understanding relationships among canopy light interception (LI), canopy height and structure, and leaf area index (LAI) informs management decisions and can improve efficiency of forage-livestock systems. In a long-term experiment in Florida, USA, we assessed the LI, LAI and sward height relationships of rhizoma peanut (Arachis glabrata Benth., RP)-bahiagrass (Paspalum notatum Flügge) mixed swards compared with bahiagrass monoculture to determine whether changes in canopy structure affect herbage accumulation (HA) rate due to changes in radiation use. Treatments were arranged in a semi-factorial, split-plot design (r=4). Bahiagrass monoculture and bahiagrass-RP mixtures were whole-plot treatments. Sub-plot treatments were an undefoliated …
Influence Of Grazing On Soil Microbial Communities On A Mixed Grass Prairie Ecosystem, L. J. Ingram, G. E. Schuman, P. D. Stahl, J. Buyer
Influence Of Grazing On Soil Microbial Communities On A Mixed Grass Prairie Ecosystem, L. J. Ingram, G. E. Schuman, P. D. Stahl, J. Buyer
IGC Proceedings (1993-2023)
The grazing of ungulates is the predominant use for much of the world's semiarid rangelands. Grazing these lands can result in significant changes not only in the vegetation community but also in the soil physical, chemical and biological properties. Changes in soil physical and chemical properties and the plant community can potentially lead to changes in soil microbial communities which may have long-term ramifications for nutrient cycling and carbon (C) sequestration. The objective of this research was to ascertain the influence of three long-term grazing treatments on soil microbial communities.
Pâtur’In: A User-Friendly Software Tool To Assist Dairy Cow Grazing Management, Luc Delaby, J. L. Peyraud, P. Faverdin
Pâtur’In: A User-Friendly Software Tool To Assist Dairy Cow Grazing Management, Luc Delaby, J. L. Peyraud, P. Faverdin
IGC Proceedings (1993-2023)
The feeding of dairy cows at pasture presents many technical, economic and environmental advantages, while benefiting from a very favourable image. However, the management of grazed land is a complex game of strategy in which the farmer applies decisions in order to manage two unstable and uncertain fluxes of change: growth of grass and intake of the herd. Many tools (platemeter, etc.) and overall methods (local stocking rate references, farm cover, etc.) have been developed as aids to grazing management. Nevertheless, few decision-support systems are currently available that make it possible to anticipate and assess the consequences of a given …
External Validation In Northwest Spain Of A Decision Support System For Grazing Dairy Cows (Grazemore), Antonio González-Rodríguez, J. López Díaz, O. P. Vázquez Yáñez
External Validation In Northwest Spain Of A Decision Support System For Grazing Dairy Cows (Grazemore), Antonio González-Rodríguez, J. López Díaz, O. P. Vázquez Yáñez
IGC Proceedings (1993-2023)
A model to predict intake and milk production of cows on grazed grass (Grazemore) was developed (Mayne et al., 2004) for farmers to increase reliance on the grassland resources of the farm and reduce the tendency towards intensive dairy production in most countries of the Atlantic Arc of Europe (González, 2003). Climatic conditions and fertiliser use is the basis of the herbage growth model, but under practical conditions the estimation of the nutrient supply to cows is much affected by management, number of cows and the area of each paddock grazed. The intake capacity of the animal and the …
Determination Of Optimal Grazing Management For Dairy Cows In Galicia (Spain) Using A Decision Support System, O. P. Vázquez Yáñez, A. González Rodríguez, J. López Díaz
Determination Of Optimal Grazing Management For Dairy Cows In Galicia (Spain) Using A Decision Support System, O. P. Vázquez Yáñez, A. González Rodríguez, J. López Díaz
IGC Proceedings (1993-2023)
GRAZEMORE is a decision support system (DSS) oriented to evaluate dairy grazing management decisions on pasture growth and milk production. The system integrates a herbage growth model (Barrett et al., 2003) and a herbage intake model (Delagarde et al., 2004) and has been validated in several EU countries. The objective of this work was to use this DSS to determine optimal grazing management of dairy cows at three supplementation levels and three grazing management strategies under Galician conditions.
Grassland Technology Interaction And Policy Evolution In Canada, Duane H. Mccartney, P. Jefferson
Grassland Technology Interaction And Policy Evolution In Canada, Duane H. Mccartney, P. Jefferson
IGC Proceedings (1993-2023)
Canada is the world's second largest country covering approximately 10 million km2 (McCartney & Horton, 1997). About 90% of Canada is uninhabited with 90 percent of Canadians living within 500 km of the American border. The forage resources used by livestock grazing and the production of forage crops covers over 36 million ha of Canada's land base (3.6%) and is divided into 72% native range (26 million ha), 11% cultivated pastures (4 million ha) and 17% forage crops (6 million ha) There are 25 million ha in grain and oilseed crops (McCartney & Horton, 1997).
Dynamics Of Long-Term Carbon Sequestration On Rangelands In The Western Usa, G. E. Schuman, L. J. Ingram, P. D. Stahl, G. F. Vance
Dynamics Of Long-Term Carbon Sequestration On Rangelands In The Western Usa, G. E. Schuman, L. J. Ingram, P. D. Stahl, G. F. Vance
IGC Proceedings (1993-2023)
Rangelands in the USA occupy 161 million hectares of land. Worldwide, rangelands occupy about half of the land area and account for more than 1/3 of the world's terrestrial carbon (C) reserves. Because of their large land area, rangelands have the potential to sequester a significant amount of additional atmospheric C. Schuman et al. (2001) estimate that rangelands and marginal croplands restored to grasslands in the USA can sequester 64 million metric tonnes C/ha/yr if properly managed. The objective of this research was to evaluate the long-term effects of grazing on soil C storage in a northern mixed-grass prairie (NMP).
Cattle Grazing Management Effects On Pasture Composition In Semi-Arid Woodlands, Trevor J. Hall, J. R. Douglas
Cattle Grazing Management Effects On Pasture Composition In Semi-Arid Woodlands, Trevor J. Hall, J. R. Douglas
IGC Proceedings (1993-2023)
Manipulating grazing pressure, controlling tree competition and burning are the main options for cattle farmers to manage land in subtropical Australian Eucalypt woodlands. These can contain >175 herbaceous and 60 woody species, but only 5 are desirable perennial and productive grass (Silcock et al., 1996). Here we describe the responses of some perennial grasses to cattle grazing pressure, tree competition and spring burning.
Sustainable Semi-Arid Grazing Management Based On Indigenous Shona Practices Prior To Introduction Of Western Ideas In Zimbabwe, O. Mugweni, R. Mugweni
Sustainable Semi-Arid Grazing Management Based On Indigenous Shona Practices Prior To Introduction Of Western Ideas In Zimbabwe, O. Mugweni, R. Mugweni
IGC Proceedings (1993-2023)
In the Shona culture the land, i.e. the plants, animals, soil, water, air and others, evolved with herding animals. Hence, the absence of one results in the destruction of the other. It is argued that the conventional grazing management belief that too many animals cause overgrazing is a misconception of the semi-arid savanna environments of Southern Africa where these environments evolved with thousands of herding grazers and mega-faunas such as elephants, wildebeests and buffalo. The objective of the research is to establish that grazing with an adequate recovery period for grazed plants, as a result of domesticated animals being managed …