Plant Pathology Commons^™

Late Winter Dietary Overlap Among Greater Rheas And Domestic Herbivores On The Argentinean Flooding Pampa, G. Vacarezza, M. S. Cid, F. Milano

IGC Proceedings (1977-2023)

This study evaluates the dietary overlap among greater rheas (Rhea americana L.) sheep and cattle in the Flooding Pampa, Buenos Aires, Argentina during late winter, when is observed the lowest forage availability. The work was carried out with the following forage classes (FC): warm and cool season grasses and forbs (legumes and no-legumes). Diet botanical composition was estimated by microanalysis of faeces. Principal Component Analysis and Kulcyznsky´s index of similarity were used for data analysis. Rhea populations selected diets with higher forb percentages. On the contrary, vegetation structure and their own morpho-physiology conditioned cattle to diets almost exclusively gramineous. …

Constraints And Opportunities For Development Of Grasslands In Urban Areas Of The Niayes Zone In Senegal, S. T. Fall, I. Cissé

IGC Proceedings (1977-2023)

A survey was carried out in urban areas of the Niayes zone in Senegal to explore grasslands development in agropastoral systems around towns. Rapid rural appraisal and farms multiple visits were done to describe the forage cropping system, identify constraints and opportunities of developing grasslands in urban areas. In Niayes urban areas, forage production system is being developed based on the cropping of several grass and tree species. Only a minority of farmers is involved in that activity. Level of grass production is rather low. Weak development of grasslands is observed. Main reasons are: farmer poor willingness to crop for …

Action Plan For The International Year Of Rangelands And Pastoralists (Iyrp): The Case For The United States, Canada, And Mexico, Barry Irving, Larry Howery, Jürgen Hoth, Jess Peterson

IGC Proceedings (1977-2023)

The GAP analysis (A Case of Benign Neglect: Knowledge gaps about sustainability in rangelands and pastoralism) points to several gaps that are relevant to the US, Canada and Mexico. North American rangelands span the ecological continuum of polar to hot deserts and arid to humid climates that exhibit highly variable ecological and forage production potential across time and space. Although there is a great deal of rangeland research, extension, and inventory capacity in all three countries, a weak link is the dissemination of information to North American pastoralists (conventionally referred to as ranchers or producers). Although the extension system in …

The State Of Grasslands Across Inner Mongolia And Mongolia, Guodong Han, David R. Kemp, Bulgamaa Densambuu, Zhiguo Li, Cuiping Gao, Zhongwu Wang, Zhiqiang Qu, Mengli Zhao, G. Udval, Qian Wu, Naya, Linxi Hu

IGC Proceedings (1977-2023)

Grasslands across Inner Mongolia and Mongolia, with their long history of nomadic livestock grazing, are very important natural resources for animal husbandry and environmental services. The main types of grasslands are meadow steppe (forest steppe), typical steppe (steppe) and desert steppe. Most of the grasslands are degraded due to over-grazing, which reduces animal production and the values of environmental services. Overgrazing decreases plant production, species biodiversity, ecosystem stability, soil fertility & structure, and lowers animal productivity leading to reduced household incomes. In pastoral areas across Inner Mongolia and Mongolia, degraded grasslands can be rehabilitated by better managing stocking rates. Our …

Modelling Grazing And Burning In Communal Rangelands To Help Understand Trade-Offs Between Production, Carbon, And Water, H. J. Hawkins, M. Moradzadeh, M. L. Vermeire, Farai Chikomba, L. Wu

IGC Proceedings (1977-2023)

Rangelands cover more than 80% of South Africa’s land area, providing critical ecosystem services, livelihoods and cultural values related to livestock. Communally owned rangelands are often overgrazed and subject to runaway fires but lack of data limits our understanding of how these threats impact production. In this transdisciplinary project, we use models to test hypotheses and predict future scenarios as a planning tool for resource-poor communal farmers. We think that moderate grazing and fire regimes will increase overall production and carbon sequestration with uncertain trade-offs for water and nutrient cycling. To test this, we trained two process-based biogeochemical models (DAYCENT …

Visual Assessment Of Soil Structure As An Early Indicator Of Soil Quality In Response To Intensive Rotational Grazing, N. Teutscherova, E. Vazquez, D. Baquero, N. E. Velasquez-Ruiz, M. Pulleman, Jacobo Arango

IGC Proceedings (1977-2023)

Grasslands can play a crucial role in mitigation of global warming by serving as carbon sink. Nevertheless, to achieve the grasslands’ potential, sustainable management is of the utmost importance as it determines system’s productivity and ecosystem services. Due to the increasing demand for animal products in developing countries, grazed areas increase exponentially in the tropics, mainly due to unsustainable management leading to low productivity and soil degradation. We evaluated the impact of intensive rotational grazing management (IRG) on early indicators of soil quality following land-use change based on on-farm observations of visual soil characteristics using two different widely used assessment …

Ecophysiology Of Grasslands: Dynamic Aspects Of Forage Plant Populations In Grazed Swards, G. Lemaire

IGC Proceedings (1977-2023)

The aim of this paper is to review knowledge of the ecophysiological mechanisms influencing the dynamics of plant populations in grazed swards. Such an objective requires some definitions. Firstly, it is necessary to define “ecophysiology” as the study of the interactions between biological individuals (plants) with their own environment: how individuals perceive and react to any constraint and change of their environment, and how the functioning of plants as a population can modify their own environment. Such a definition implies a dynamic approach to pant population functioning as resulting from constant plant-plant interactions mediated by micro-environment modifications. In a grazed …

Production Potential Of South America Grasslands, G. E. Maraschin

IGC Proceedings (1977-2023)

Grasslands exist all over the world under a wide range of climates, soil types, topography conditions and seasonality. The South America grasslands cover a wide range of ecosystems and vegetaion types, going from desert areas to steppes, subhumid temperate, subtropical and tropical savannas embodying also portions of the tropical rain forest environment, and represent one of the Earth’s largest expanses of natural rangelands (Oesterheld et al., 1992). They represent developed ecosystems requiring acquaintance to accept sound agronomic and ecological activities. The diversity of vegetation determined by the latitudes 6^oN, down to the southern most tip of the continent …

The Conservation Of Grasslands And Rangeland By Pastoralists: Challenges And Opportunities, Thomas M. Loquang

IGC Proceedings (1977-2023)

No abstract provided.

The Application Of Farming System Models To The Problem Of Sustainable Grasslands Management In Northern China And Australia, Randall Jones, D. Michalk, David R. Kemp, J. P. Wu, T. Takahashi, Z. F. Ma, G. Millar

IGC Proceedings (1977-2023)

No abstract provided.

Improved Forage Seed Availability In Southern Uganda, P. Grimaud, S. G. Byenkya, Elly N. Sabiiti

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Concentrate Supplement On Intake And Weight Gain Of Grazing Lambs, Xiaoqing Zhang, Yanmei Jin, Risu Na, Qizhong Sun

IGC Proceedings (1977-2023)

No abstract provided.

The Challenges Of Cropping And Forestry Intensification On Grasslands Livestock Production Systems: The Uruguayan Case, Fabio Montossi, Walter Ayala, R. Díaz

IGC Proceedings (1977-2023)

No abstract provided.

The Improvement Of Degraded Permanent Grasslands By Grazing In The Ne Romania, C. Samuil, V. Vintu, T. Iacob, I. C. Popovici

IGC Proceedings (1977-2023)

No abstract provided.

Soil‐Atmosphere Exchange And Mitigation Of Nitrous Oxide And Methane Emissions In New Zealand's Terrestrial Biosphere, Surinder Saggar, K. R. Tate, D. L. Giltrap, J. Singh

IGC Proceedings (1977-2023)

No abstract provided.

The Use Of Criteria And Indicator Monitoring Of Ecosystem Sustainability To Assess Ecosystem Services On Grasslands/Rangelands, R. Dennis Child, Janette Kaiser, Ralph Crawford

IGC Proceedings (1977-2023)

No abstract provided.

Soil‐Plant Indicators For Determining The Impact Of Management On The Stability Of Grasslands In Cattle Exploitation, Sandra Lok, Gustavo Crespo, E. Frómeta, S. Fraga

IGC Proceedings (1977-2023)

No abstract provided.

Forests, Steppes And Grasslands In Morocco: Diversity, Ecological Importance And Socio‐Economic Role, Mohammed Sghir Taleb, Mohamed Fennane

IGC Proceedings (1977-2023)

No abstract provided.

Impacts Of Long-Term Phosphorus Fertilization And Addition Of Perennial Legumes On A Temperate Natural Grassland: I. Changes In Spieces Biodiversity And Stability, Martín Jaurena, Walter Ayala, José Terra, Raül Bermudez, Ethel Barrios, Ximena Lagomarsino

IGC Proceedings (1977-2023)

No abstract provided.

Building Bridges: Grasslands To Rangelands, James T. O'Rourke, Gavin Sheath, Vivien G. Allen

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Silting Yield Index On Biomass And Carbon Sequestration Potential Along An Altitudinal Gradient Of Subtropical Chir Pine Forests And Grasslands In North Western Himalaya, India, Debasis Mahato, B. Gupta, Matber Singh

IGC Proceedings (1977-2023)

Biomass is an important characteristic of vegetation and is regarded as an important indicator of ecological and management processes in the vegetation. Measures of standing crop also reflect the amount of energy stored in the vegetation, which can indicate the potential productivity at the site. Forests are important for carbon sequestration besides playing very important role in the global carbon cycle. They store about 80% of all aboveground and 40% of all belowground terrestrial organic carbon. This study comprises to estimate the biomass and carbon stock of chirpine forests at different altitudinal gradients.

Importance Of Grassland Management For Carbon Sequestration And To Mitigate Climate Change: A Review, Poonam Yadav, Sheela Choudhary, Sunil Dutt Choudhary, Praveen Kaushik

IGC Proceedings (1977-2023)

Grasslands, including rangelands, shrub lands, pastureland, and cropland sown with pasture and fodder crops, covered approximately 3.5 billion ha in 2000, representing 26 percent of the world land area and 70 percent of the world agricultural area, and containing about 20 percent of the world’s soil carbon stocks (Ramankutty et al., 2008). All ecosystems- forested ecosystems, agro-ecosystems, grassland, ecosystems etc. take up atmospheric CO₂ and mineral nutrients and transform them into organic products In undisturbed ecosystems, the carbon balance tends to be positive: carbon uptake through photosynthesis exceeds losses from respiration, even in mature, old-growth forest ecosystems.

Improving …

Conservation Prioritization Of Semi-Arid Savannas In India: A Multi-Scale Landscape Approach, Abi Tamim Vanak

IGC Proceedings (1977-2023)

The semi-arid savanna grasslands of peninsular India are unique habitats that support a vast proportion of Indiaís agropastoralist community. They are also home to critically endangered species such as the Great Indian bustard and other endangered and endemic species such as the Indian wolf (Canis lupus pallipes) and blackbuck antelope (Antilope cervicapra). Unfortunately, savanna grasslands have not received the attention of conservationists or policy makers, resulting in a lack of protection for both the endangered and endemic wildlife as well as the habitat. Given the high human-dependence on these biomes, traditional conservation measures such as large protected areas are not …

The Potential And Limitations Of Grasslands For Livestock Production In West Shoa Zone Of Oromia Region, Ethiopia, Abule Ebro, Azage Tegegne, Adisu Abera, Endale Yadessa, Zewdie Adane, Berhanu Gebremedhin

IGC Proceedings (1977-2023)

Ethiopia holds the largest livestock population in Africa estimated at about 54 million heads of cattle, 25.5 million sheep, 24.06 million goats, 0.92 million camels, 4.5 million donkeys, 1.7 million horses, 0.33 million mules, 54 million chicken and 4.9 million beehives (CSA, 2012). Despite the huge livestock population, the productivity of livestock in general is low and compared to its huge resource its contribution to the national economy is below expected. Among the major problems affecting livestock production and productivity in Ethiopia, feed shortage in terms of quantity and quality is the leading problem (Alan et al., 2012). The …

Application Of Pastoralists' Knowledge To Natural Resource Management In Spain, Elisa Oteros-Rozas, María Fernández-Giménez, Ricardo Ontillera-Sánchez, José A. González, Federico Fillat-Estaque

IGC Proceedings (1977-2023)

Extensive livestock rearing has been acknowledged as an important tool for sustainable management of social-ecological systems and biodiversity conservation. In the Mediterranean Basin this relationship has been highlighted in mountainous and rural areas, where the co-evolved assemblages and dynamics of plant communities and grazing practices and patterns are mutually reinforcing. Among extensive livestock rearing systems, mobile pastoralism is a typical adaptation in semi-arid areas and mountainous regions where pasture availability is especially variable in time and space. In Spain, mobile pastoralism dates back to Neolithic and has survived until our days in different ways. An outstanding example of mobility is …

Adaptation To Changing Institutional, Market And Bio-Physical Environments: The Case Of China’S Grasslands, Colin G. Brown, Scott A. Waldron, John W. Longworth

IGC Proceedings (1977-2023)

In the modern world, small pastoral herder households living on grasslands in countries such as China face major challenges in adapting to changes in their institutional, market and bio-physical environments. In China, these changes have been profound over the last 30 years. Herders, their communities and others dependent on the grasslands have responded to these developments but not always as might be expected. In this paper, the sources of the macro-forces in China that have created the pressure for change at the grass roots are outlined and the micro-adjustments made by herders and others in response to these pressures are …

Economics Of Camel Rearing On Grasslands In Gujarat, Khem Chand, B. L. Jangid, Subhash Kachhawa

IGC Proceedings (1977-2023)

Camel in India is primarily reared for carting/draft, agricultural operation, transportation in addition to the secondary utility of milk and hair production (Saini et al 2006). The One humped or Dromedary camel (Camelus dromedarius) is an important livestock species uniquely adapted to hot and arid environments (Schwartz, 1992). It is important livestock specie contributing significantly in rural economy and livelihood of desert dwellers in Kachchh region of Gujarat. It still plays a very distinctive role in various agricultural operations and rural transportation in dry land farming (Rajput and Tripathi, 2005). The Kachchh region of Gujarat has large camel …

Steppes And Grasslands In Morocco: Diversity, Functional Ecology And Socio-Economic Role, Mohammed Sghir Taleb, Jalal El Oualidi

IGC Proceedings (1977-2023)

With Morocco’s geographical situation (at the crossroads between Europe and Africa, the Mediterranean Sea and the Atlantic Ocean), its diverse climate and habitats supports a varied natural vegetation. The floristic richness of the country is related to the heterogeneity of biotypes. From the desert to the high mountains and the littoral to the continental borders, Morocco offers varied ecological conditions that support many different plant species. Steppes and grasslands are important parts of the main plant associations encountered in Morocco. They contain a wealth of flora, play important ecological roles and, from a socioeconomic perspective, are highly significant.

Dynamic Of Soil Mesofauna Of Fixed Sand Dunes On The Songnen Grasslands, Northeastern China, Xiuqin Yin, Zhenhai Wang, Dandan Zhang

IGC Proceedings (1977-2023)

Grasslands cover vast land areas in semi-arid and semi-humid regions. Sand dunes, most of which are fixed sand dunes, form a large portion of grasslands. Vegetation on fixed sand dunes is an important part of grassland ecosystem productivity, and topographic position is one of the important factors resulting in the differences among vegetation, soil, etc. (Sakai and Ohsawa, 1994; Nagamatsu and Miura, 1997).

An important component of soil fauna ecology is to analyze the distribution of soil fauna and its influencing factors. On the small scale, the ozone factors become the dominant factor affecting the soil fauna (Frouz et al., …

Assessment Of Grasslands And Livestock Production In Kangra Valley Of Himachal Pradesh, S. Radotra, Inder Dev, A. Kanan, Birbal Singh

IGC Proceedings (1977-2023)

In Himachal Pradesh 89.96 percent as per 2011 census of population lives in rural areas. The mainstay of the people of Himachal Pradesh is agriculture and has an important place in the economy of the State. Agricultural census shows that 87.95 percent of the total holdings are of small and marginal. Rearing of livestock is an integral component of rural economy (Anonymous, 2014). Livestock depend to a certain extent on fodder and grass grown on common property resources (CPR) as well as on crops and residues. Animal production is an integral part and forms part of the earning of small …