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Articles 16351 - 16380 of 59529

Full-Text Articles in Earth Sciences

Performance Of Lora-Wan Sensors For Precision Livestock Tracking And Biosensing Applications, S. Nyamuryekung’E, Andrés F. Cibils, R. E. Estell, M. Funk, M. M. Mcintosh, A. Cox, S. A. Utsumi, H. Cao, L. Boucheron, Q. Gong, H. Chen, S. Spiegal, G. Duff, V. Gouvea, C. B. Brandani Jan 2022

Performance Of Lora-Wan Sensors For Precision Livestock Tracking And Biosensing Applications, S. Nyamuryekung’E, Andrés F. Cibils, R. E. Estell, M. Funk, M. M. Mcintosh, A. Cox, S. A. Utsumi, H. Cao, L. Boucheron, Q. Gong, H. Chen, S. Spiegal, G. Duff, V. Gouvea, C. B. Brandani

IGC Proceedings (1977-2023)

This study investigated the integration of Long Range Wide Area Network (LoRa WAN) communication technology and sensors for use as Internet of Things (IoT) platform for Precision Livestock-Farming (PLF) applications. The research was conducted at New Mexico State University’s Clayton Livestock Research Centre. The functionality of LoRA WAN communication technology and performance of LoRa WAN motion and GPS sensors were tested using static sensors that were placed either, a) outdoors and at incremental distances from the LoRa WAN gateway antenna (Field, n=6), or b) housed indoors and close to the same LoRa WAN gateway antenna (Indoor, n=5). Accelerometer data, reported …

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Pasture Management Relevant Behaviour Of Yaks (Bosgrunniens), O. Kaufmann, A. Tolebekova Jan 2022

Pasture Management Relevant Behaviour Of Yaks (Bosgrunniens), O. Kaufmann, A. Tolebekova

IGC Proceedings (1977-2023)

After a decline in yak populations in Central Asia, efforts have been made for several years to rebuild them. In that context, the ecological demands of the alpine landscape must be taken into account. The aim of the studies was to analyse the behaviour of yak cows in short time intervals and to deduce which sub-areas the yaks prefer more or less strongly, which altitudes in the mountains the animals visit in the course of a year, which distances they cover in summer and winter and which factors influence their grazing behaviour. The investigations were carried out on yaks in …

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Herbage And Livestock Responses For N-Fertilized And Grass-Legume Grazing Systems, D. M. Jaramillo, José C. B. Dubeux Jr., L. M. D. Queiroz, L. Garcia, E. R. S. Santos Jan 2022

Herbage And Livestock Responses For N-Fertilized And Grass-Legume Grazing Systems, D. M. Jaramillo, José C. B. Dubeux Jr., L. M. D. Queiroz, L. Garcia, E. R. S. Santos

IGC Proceedings (1977-2023)

Forage legumes provide an alternative N source in grazing systems. The objective was to evaluate plant and animal responses in N-fertilized or grass-legume-based systems under continuous stocking during winter and summer, from 2016-2019. The three treatments consisted of year-round forage systems including winter and summer forage components. The first system (Grass+N) included N-fertilized (112 kg N ha-1 yr-1) ‘Argentine’ bahiagrass (Paspalum notatum) pastures during the summer, overseeded with a mixture (56 kg ha-1 of each) of ‘FL 401’ cereal rye (Secale cereale) and ‘RAM’ oat (Avena sativa) during winter with …

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New Forms Of Pastoral Mobility Among Sheep Herders In The Algerian Steppe; The Case Of Pastoralists Of Djelfa, Dihia Gaci, Jean-Pierre Boutonnet Jan 2022

New Forms Of Pastoral Mobility Among Sheep Herders In The Algerian Steppe; The Case Of Pastoralists Of Djelfa, Dihia Gaci, Jean-Pierre Boutonnet

IGC Proceedings (1977-2023)

The recent socio-economic, political and climatic changes experienced by the Algerian steppe for the last decades have led to profound changes in pastoral mobility practices. This study describes the new mobility practices as currently adopted by the breeders of the Djelfa region. The realization of 59 semi-directive surveys was conducted between 2014 and 2016 among breeders in different reception areas. Practices related to the distance travelled during an annual cycle, the transhumance calendar and itinerary and the passage or not in the homeland are diverse. These practices of mobility can vary from one year to another or during the life …

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Data Validating The Use Of Rubidium As A Non-Radioactive Tracer For The Localised Proliferation Of Wheat Roots In Acidic Or Limed Subsoil, Paul M. Damon, Gaus Azam, Chris Gazey, Craig Scanlan, Zed Rengel Jan 2022

Data Validating The Use Of Rubidium As A Non-Radioactive Tracer For The Localised Proliferation Of Wheat Roots In Acidic Or Limed Subsoil, Paul M. Damon, Gaus Azam, Chris Gazey, Craig Scanlan, Zed Rengel

Grain and Other Field Crops Research Articles

Existing technologies for lime (CaCO3) incorporation into acidic field soils result in the heterogeneous distribution of limed and acidic soil sections. In a study characterising the response of wheat (Triticum aestivum L.) to the amendment of an acidic soil profile with vertically limed slots[1], elucidation of the dynamics of root proliferation within the acidic and limed soil sections was a prerequisite to understanding the mechanisms driving the above-ground responses. Rubidium (Rb) has been used widely as a non-radioactive tracer for root activity[2] in soil. However, the contrasting pH in a heterogeneously limed soil profile and related aluminium toxicity effects …

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Pastoralism, Social, Gender, And Policy Issues, Nahid Naghizadeh Jan 2022

Pastoralism, Social, Gender, And Policy Issues, Nahid Naghizadeh

IGC Proceedings (1977-2023)

Nearly half of the Earth's land surface is classified as rangelands. Rangeland's health and productivity are directly critical to the livelihoods, cultures, and resilience of more than 500 million people worldwide, many of whom are indigenous peoples who depend on rangelands. Pastoralism is very diverse; it can be found in all continents, from the drylands of Africa and the Arabian Peninsula to the highlands of Asia and Latin America, or the tundra in the circumpolar zones, and in particular where crop cultivation is physically limited. Pastoralism supports several hundred million households worldwide and manages one billion animals, including camels, cattle, …

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Ecological Science Infrastructure For Sustainability Transformations In Rangelands, Brandon T. Bestelmeyer, J. E. Herrick, J. R. Brown, D. M. Browning, B. Densambuu, E. Elias, S. E. Mccord, H. R. Peinetti, S. Spiegal, N. P. Webb, J. C. Williamson Jan 2022

Ecological Science Infrastructure For Sustainability Transformations In Rangelands, Brandon T. Bestelmeyer, J. E. Herrick, J. R. Brown, D. M. Browning, B. Densambuu, E. Elias, S. E. Mccord, H. R. Peinetti, S. Spiegal, N. P. Webb, J. C. Williamson

IGC Proceedings (1977-2023)

Sustainability transformations—deliberate and radical shifts in values, governance, and management regimes to achieve sustainability—are needed in rangelands as in other components of the Earth system. We review four concepts comprising an ecological science infrastructure to support such transformations. The foundation is standard measurement of rangeland conditions in the field, especially vegetation and soil properties that underpin the environmental aspects of sustainability. Big data resources, especially gridded spatial datasets produced by models and remote sensing, can be combined with field data and computational approaches to upscale information about rangeland conditions and produce additional indicators of ecosystem functions and services. State and …

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Annual Ryegrass Pasture For Dairy Cows Receiving Total Mixed Ration, M. Civiero, L. H. Schaitz, C. P. Ferris, Henrique M. N. Ribeiro-Filho Jan 2022

Annual Ryegrass Pasture For Dairy Cows Receiving Total Mixed Ration, M. Civiero, L. H. Schaitz, C. P. Ferris, Henrique M. N. Ribeiro-Filho

IGC Proceedings (1977-2023)

The inclusion of herbage in the diet of medium yielding dairy cows offered a total mixed ration (TMR) may be beneficial. This study, which involved mid lactation dairy cows, examined the effect of partial replacement of a TMR with annual temperate pasture. Treatments were ad libitum TMR (TMR100), 75% ad libitum TMR + ryegrass (Lolium multiflorum ‘Maximus’) (TMR75), and 50% ad libitum TMR + ryegrass (TMR50). Twelve multiparous Holstein and F1 Jersey × Holstein cows were divided into six homogeneous groups, taking account of milk production (26.6 ± 4.5 kg/day), days in milk …

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A Guava-Based Hortipasture System For Mitigating Climate Change And Sustaining Fodder & Fruit Supply In Semi-Arid Regions Of India, Kamini Gautam, Sunil Kumar, Amit Kumar Singh, Avijit Ghosh, Manjanagouda S. S., R. V. Kumar Jan 2022

A Guava-Based Hortipasture System For Mitigating Climate Change And Sustaining Fodder & Fruit Supply In Semi-Arid Regions Of India, Kamini Gautam, Sunil Kumar, Amit Kumar Singh, Avijit Ghosh, Manjanagouda S. S., R. V. Kumar

IGC Proceedings (1977-2023)

Hortipasture systems have huge potential to mitigate climate change via sequestering carbon along with sustaining fodder and fruit supply especially in semi-arid regions. Therefore to evaluate climate change mitigation, fruit and fodder production potential of 10 year old rainfed based Hortipasture system (Psidium guajava (Guava) + Cenchrus ciliaris + Stylosanthes hamata) established at Central Research Farm of ICAR-Indian Grassland and Fodder Research Institute (Bundelkhand region, Jhansi, Uttar Pradesh, India), carbon stock of tree and under storey pasture components was quantified along with fruit and forage production. The experimental site is drought prone semi arid region characterized by poor …

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Free-Enterprise Farming On Grasslands In Central Nsw, Australia, Des Green, Stuart Green, Ted Wolfe, Jo Richardson, Rob Eccles Jan 2022

Free-Enterprise Farming On Grasslands In Central Nsw, Australia, Des Green, Stuart Green, Ted Wolfe, Jo Richardson, Rob Eccles

IGC Proceedings (1977-2023)

A pathway is described in developing and improving the pastures on family-owned sheep and beef properties at sites near Blayney in central NSW. Initially, the twin approach of sowing perennial grasses, predominantly phalaris (Phalaris aquatica) with subterranean clover (Trifolium subterraneum) plus the recommended addition of superphosphate fertiliser, was closely followed but within a decade ill-thrift in pastures and livestock occurred. Once the core problem of soil acidity was recognised, steps were taken to overcome this constraint with applications of lime. However, an additional modification involving the application of gypsum with lime had to be sorted out …

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Guano-Derived Morphologies And Associated Minerals Found In Cova De Sa Guitarreta, Llucmajor, Balearics, Antonio Merino Juncadella, Joan J. Fornós, Antoni Mulet, Joaquín Ginés Jan 2022

Guano-Derived Morphologies And Associated Minerals Found In Cova De Sa Guitarreta, Llucmajor, Balearics, Antonio Merino Juncadella, Joan J. Fornós, Antoni Mulet, Joaquín Ginés

International Journal of Speleology

Cova de sa Guitarreta is located in the southern part of Mallorca Island (western Mediterranean). It was formed presumably by hypogenic processes in Upper Miocene reefal calcarenites. The cave hosts an important breeding colony of bats during the end of spring and early summer. Its microclimate is influenced by the presence of a thermal phreatic water table (27.7ºC) as well as by bat populations remaining in the cave along the reproductive season. The morphological bat-related features include bat claws and thumb marks scratches, together with several morphologies linked to bat excreta and aggressive leachates from guano. From the mineralogical point …

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Forage Systems To Optimize Agronomic And Economic Performance In Organic Dairy Systems, S. Ray Smith, G. Pighetti, D. M. Butler, Kenneth H. Burdine, Krista Lea, K. Mercier, K. Payne, J. Allison, Gary E. Bates, N. Colton, A. Rius, P. Krawczel, E. Eckelkamp Jan 2022

Forage Systems To Optimize Agronomic And Economic Performance In Organic Dairy Systems, S. Ray Smith, G. Pighetti, D. M. Butler, Kenneth H. Burdine, Krista Lea, K. Mercier, K. Payne, J. Allison, Gary E. Bates, N. Colton, A. Rius, P. Krawczel, E. Eckelkamp

IGC Proceedings (1977-2023)

Organic dairy production in the USA is growing, but most forage systems research focuses on conventional production practices. As a result, organic dairy producers have limited science-based information to assist with farm and livestock management. The objective of this project was to use a multi-faceted approach to determine the ideal species mixtures for organic dairy production as well as document forage quality, forage yield, soil characteristics, milk production and milk quality during the grazing season. The forages studied ranged from a single species monoculture to a four species mixture of warm and cool season grasses and legumes. Nine distinct forage …

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Fodder Crop Adoption Through Push-Pull Technology (Ppt) For Fall Armyworm (Faw) Control In Cereals Cropping Systems, Michael N. Njunie, E. N. Muthiani, A. Mzingirwa, N. F. Pole, B. M. Muli, A. O. Esilaba Jan 2022

Fodder Crop Adoption Through Push-Pull Technology (Ppt) For Fall Armyworm (Faw) Control In Cereals Cropping Systems, Michael N. Njunie, E. N. Muthiani, A. Mzingirwa, N. F. Pole, B. M. Muli, A. O. Esilaba

IGC Proceedings (1977-2023)

There is an urgent need to increase grain yields and animal products due to increasing human population in Africa. Push-pull technology (PPT) is a conservation agriculture intercrop technology which protects and enhances natural resources productivity and ecosystem services in mixed farming systems. The technology involves growing of a cereal crop with a repellent intercrop, Desmodium genus (silverleaf, D. uncinatum and greenleaf, D. intortum) with grass such as Pennisetum purpureum or Brachiaria spp. planted as a border around the cereal-legume intercrop. The plants accompanying the cereal crop are typically valuable high quality fodder thus integrating crop-livestock production. The PPT was …

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Evaluation Of The Chemical And Biological Characteristics Of Sake Lees, S. Katsumata, S. Yamanaka, M. Yamauchi, H. Hirooka, H. Kumagai Jan 2022

Evaluation Of The Chemical And Biological Characteristics Of Sake Lees, S. Katsumata, S. Yamanaka, M. Yamauchi, H. Hirooka, H. Kumagai

IGC Proceedings (1977-2023)

Sake lees (SLs), produced from brewing Japanese Sake and known to be rich in yeast, is expected to be an alternative of feed protein sources for ruminants. Previous studies showed that yeast improved the digestibility of fibers in ruminants. However, the nutrient composition and the numbers of live and dead yeast in the SLs, have large diversity because of the different brewing materials and processes. The objective of this study was to evaluate the chemical and biological characteristics of SLs with diverse brewing processes and storing periods (0-23 weeks). Seven types of SLs (SLs 1-7) were collected from two breweries. …

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Effect Of High-Intensity, Short-Duration Grazing On Species Density And Botanical Composition Of Arid Rangelands, Mounir Louhaichi, Mouldi Gamoun, Fethi Gouhis, Ezzeddine Belfekih, Mohamed Abdelkader Jan 2022

Effect Of High-Intensity, Short-Duration Grazing On Species Density And Botanical Composition Of Arid Rangelands, Mounir Louhaichi, Mouldi Gamoun, Fethi Gouhis, Ezzeddine Belfekih, Mohamed Abdelkader

IGC Proceedings (1977-2023)

Rangelands are the mainstay of pastoral and agropastoral livelihoods worldwide. They have provided forage for livestock and wildlife for centuries, but steady degradation of rangelands is causing increasing concern. Many rangeland managers believe exclusion of livestock grazing for extended periods would allow degraded rangelands to recover. The purpose of this current ongoing research is to evaluate the effect of high-intensity short-duration grazing on plant density, species richness and botanical composition on arid rangelands during favorable years. The site, which is protected for two years in southern Tunisia and covers an area of 6 ha, was grazed by a flock of …

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Economics Of Greenhouse Gas Mitigation Strategies In A North-Eastern Brazilian Beef Production System, K. Agethen, Rogerio M. Mauricio, C. Deblitz Jan 2022

Economics Of Greenhouse Gas Mitigation Strategies In A North-Eastern Brazilian Beef Production System, K. Agethen, Rogerio M. Mauricio, C. Deblitz

IGC Proceedings (1977-2023)

The state of Maranhão, Brazil, has been among the country’s fastest-growing cattle regions in recent years and it now faces important conflicts for beef production. Pasture degradation, low cattle productivity, and land-use changes due to agriculture and forestry expansion are key challenges. Additionally, beef production systems are a focus for emissions reduction, particularly in the context of increasing deforestation and its impact on global warming. A sustainable intensification of currently used pastures, enhancing economic viability and reducing environmental effects of beef production can help to mitigate the climate impact. Since economics is an important incentive in the decision-making processes of …

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A History Of Wright State University's Department Of Geological Science, Paul J. Wolfe Jan 2022

A History Of Wright State University's Department Of Geological Science, Paul J. Wolfe

Earth and Environmental Sciences Faculty Publications

A history of Wright State University's disbanded and reintegrated Department of Geological Sciences written by department faculty member Paul J. Wolfe. Wolfe describes the development of the program, the faculty throughout the years, and the programs offered through the department.

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Reply To Comment: Controls On Turnover Of Marine Dissolved Organic Matter-Testing The Null Hypothesis Of Purely Concentration-Driven Uptake, Yuan Shen, Ronald Benner Jan 2022

Reply To Comment: Controls On Turnover Of Marine Dissolved Organic Matter-Testing The Null Hypothesis Of Purely Concentration-Driven Uptake, Yuan Shen, Ronald Benner

Faculty Publications

Our recent bioassay experiments indicate that molecular properties are a primary control on the microbial utilization of dissolved organic matter in the ocean. This finding is questioned by Lennartz and Dittmar who modeled our experiments and concluded that our observations could be largely explained by concentration-driven uptake independent from molecular properties. We suggest the authors' models are deficient for establishing the relative roles of molecular properties and concentration-driven uptake. Our conclusion is consistent with earlier and recent experimental results and biogeochemical observations, supporting a unified theory with molecular properties as a more prominent control than concentration-driven uptake on marine organic …

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Rangeland Degradation In Mongolia – Using State And Transition Models To Help Understand Rangeland Dynamics, S. Sainnemekh, B. Densambuu, B. Bestelmeyer, I. C. Barrio, A. L. Aradóttir Jan 2022

Rangeland Degradation In Mongolia – Using State And Transition Models To Help Understand Rangeland Dynamics, S. Sainnemekh, B. Densambuu, B. Bestelmeyer, I. C. Barrio, A. L. Aradóttir

IGC Proceedings (1977-2023)

Rangeland degradation and soil erosion pose constant challenges to the management of natural resources in Mongolia. Large increases in livestock numbers since the early 1990s, together with increasing temperatures and higher frequency of extreme weather events have led to widespread degradation of rangeland resources, to the extent that today, nearly 57% of rangelands in Mongolia are considered degraded to some degree. New ways of understanding the dynamics of rangeland ecosystems and guidelines to conserve healthy and productive rangelands are urgently needed. The application of State and Transition Models (STMs) in ecosystem management has shown promise to understand the mechanistic processes …

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An Approach To Evaluate Soils Influence On Floristic Composition Of Natural Grasslands, F. L. F. De Quadros, R. M. R. De Carvalho, R. Farenzena, L. Marin, P. L. Nascimento Jan 2022

An Approach To Evaluate Soils Influence On Floristic Composition Of Natural Grasslands, F. L. F. De Quadros, R. M. R. De Carvalho, R. Farenzena, L. Marin, P. L. Nascimento

IGC Proceedings (1977-2023)

This trial aims to evaluate floristic composition of most abundant species in three soil typical of Pampa biome on Brazil. The survey was held at Maronna Fundation located on southern Alegrete municipality, on Rio Grande do Sul, Brazil’s state. Regional climate belongs to Koeppen’s Cfa class. Soil types were shallow basalt (Psamments e Orthents), deep basalt (Vertisols) and sandy soil (Acrisols or Ultisols). Floristic composition were evaluated by visual ranking of aerial biomass of the major species (transformed to kg of dry matter per hectare), calibrated by cuts at ground level, according to field procedures of BOTANAL method. Grasses were …

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Interindividual Differences And Their Consistency In Grazing Cattle Behavior Across Seasons, H. Anzai, M. Shitajikkoku, K. Hani, N. Yamada, M. Hirata Jan 2022

Interindividual Differences And Their Consistency In Grazing Cattle Behavior Across Seasons, H. Anzai, M. Shitajikkoku, K. Hani, N. Yamada, M. Hirata

IGC Proceedings (1977-2023)

Interindividual differences and their consistency in behavior were investigated for cattle (Bos taurus) grazing a bahiagrass (Paspalum notatum) and centipedegrass (Eremochloa ophiuroides) dominated pasture as a herd of about 30 breeding cows with their calves. Behavior of the cows was monitored directly by observers and also using GPS and accelerometer data loggers attached to focal cows for a period of 1–5 days every month during the grazing seasons (from May to October) in 2018 and 2019. The data were converted into behavioral variables (e.g. time spent grazing, ruminating and resting, time spent in particular …

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Biodiversity Assessment And Conservation Of Threatened Plant Species Belonging To The Unique Steppe With Trees In Tunisian Drylands, Jamila Msadek, Mohamed Tarhouni Jan 2022

Biodiversity Assessment And Conservation Of Threatened Plant Species Belonging To The Unique Steppe With Trees In Tunisian Drylands, Jamila Msadek, Mohamed Tarhouni

IGC Proceedings (1977-2023)

Biodiversity conservation from heavy grazing impacts, through the creation of national parks, is usually considered to sustain higher ecosystem resilience and to protect the natural plant cover as well as the threatened species. The study was carried out in Bou Hedma national park, a biosphere reserve containing the unique Acacia tortilis (Forssk.) Hayne subsp. raddiana (Savi) Brenan steppe with trees in Tunisia. Several functional traits of seven (7) rare and threatened plant species are used to highlight their adaptive strategies in order to understand the evolution of plant communities and the overall ecosystems functioning inside the park. Such results may …

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Vegetation Response To Grazing Pressure In The Puna Flat, Nw Argentina, M. Quiroga Mendiola, A. Tálamo Jan 2022

Vegetation Response To Grazing Pressure In The Puna Flat, Nw Argentina, M. Quiroga Mendiola, A. Tálamo

IGC Proceedings (1977-2023)

Puna grasslands are located at a high‐altitude flat plateau in the Northwest of Argentina. It is an arid territory (100 to 300 mm rainfall/year) at 3,000 to 4,000 m a.s.l. The vegetation is scarce, where Andean pastoralist communities produce meat and wool, specialized in llama (Lama glama) and sheep‐breeding, although they do breed multi‐species herds that may also include goats and cattle. There are erosion processes in the Puna, where shepherds and their animals could be synergetic factors with natural very hard climatic conditions. In this work we assess the effect of ovine and lama grazing on the …

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Grass Species Density And Biomass Of South African Communal Property Association Farms Differing In Soil Properties, K. E. Ravhuhali, B. Moyo Jan 2022

Grass Species Density And Biomass Of South African Communal Property Association Farms Differing In Soil Properties, K. E. Ravhuhali, B. Moyo

IGC Proceedings (1977-2023)

Attempts to monitor and mitigate rangeland deterioration in Communal Property Associations projects require some understanding of the knowledge of species composition and distribution. The study was conducted to compare the herbaceous in three selected CPAs projects (Mashung Matlala - Sandy loam, Mawela - clay loam, and Bela-Bela - clay) in South Africa. Mawela and Mashung Matlala CPAs were overgrazed. For species density, basal strike, and biomass, three transects (500m), which served as replicates, were established at two camps of each of the selected CPAs. Variation in herbaceous vegetation parameters was explored through SAS software. Clay soil type had better (P …

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Mgrre_Thinsections_Mgrre-81_7, Mgrre Jan 2022

Mgrre_Thinsections_Mgrre-81_7, Mgrre

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No abstract provided.

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Mgrre_Thinsections_Mgrre-82_1, Mgrre Jan 2022

Mgrre_Thinsections_Mgrre-82_1, Mgrre

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Mgrre_Thinsections_Mgrre-80_1, Mgrre Jan 2022

Mgrre_Thinsections_Mgrre-80_1, Mgrre

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No abstract provided.

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Mgrre_Thinsections_Mgrre-80_2, Mgrre Jan 2022

Mgrre_Thinsections_Mgrre-80_2, Mgrre

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Mgrre_Thinsections_Mgrre-80_3, Mgrre Jan 2022

Mgrre_Thinsections_Mgrre-80_3, Mgrre

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Mgrre_Thinsections_Mgrre-80_6, Mgrre Jan 2022

Mgrre_Thinsections_Mgrre-80_6, Mgrre

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