Relationship Between Live Weight Gain Of Tibetan Sheep And Available Pasture In Qinhai-Tibetan Plateau,
2020
Lanzhou University, China
Relationship Between Live Weight Gain Of Tibetan Sheep And Available Pasture In Qinhai-Tibetan Plateau, Y. Sun, Y. Liu, Y. Zhang, S. H. Chang, Z. F. Wang, X. J. Chen, Fujiang Hou
IGC Proceedings (1977-2023)
Overgrazing is a universal phenomenon on the Qinghai-Tibetan Plateau, which results in 90% of the alpine meadow grassland being degraded (Gao and Hou 2011). As well, animal productivity of the grassland is becoming lower because of the yearly continuous grazing. Improved grazing management will play a key role in the sustainable use of alpine meadow grasslands.
Vegetation Restoration Patterns After Rangeland Enclosure In Arid Tunisia,
2020
University of Sfax, Tunisia
Vegetation Restoration Patterns After Rangeland Enclosure In Arid Tunisia, Khalil Mseddi, Ahmad Mohajja Al-Shammari, Hossain Sharif, Mohamed Chaieb
IGC Proceedings (1977-2023)
In Tunisia arid regions, the increase in the rural populat-ion density, (Le Floc’h et al. 1999) has intensified human pressure on natural resources through ‘‘disturbances’’ such as grazing and wood harvesting, land clearing and ploughing, which largely depend on the annual rainfall. About 10% of the steppe area has been taken over by agriculture, shrinking perennial plant cover and a highly degraded vegetation class (Hanafi and Jauffret 2008). This work assesses the vegetation restoration patterns on a protected agricultural field in Tunisian arid rangeland after 15 years of enclosure and protection against plowing.
Competition Between Lolium Perenne L. And Agrostis Capillaris L. Growing Under Different Light Regimes As Response To Fertiliser Addition In A Degraded Pasture,
2020
Universidad Austral de Chile, Chile
Competition Between Lolium Perenne L. And Agrostis Capillaris L. Growing Under Different Light Regimes As Response To Fertiliser Addition In A Degraded Pasture, Paulina Flores, Ignacio F. López, Peter D. Kemp, José Dörner
IGC Proceedings (1977-2023)
At the field level plants can experience solar irradiance fluctuations caused by cloud cover or canopy shading. The majority of the research in this area has been done on forestry/pastoral systems using artificial structures so that the pasture has the desired light level (Peri et al. 2006). However, the effect of a change from high to low irradiance on the seasonal plant growth and production in a degraded pastoral system has not been previously studied, especially when fluctuating light regimes are involved. The aims of this study were to evaluate tillering dynamics of Lolium perenne L. (Lp) and Agrostis …
Monitoring Of Rehabilitation Of Degraded Rangelands,
2020
University of Science and Technology Houari Boumediene, Algeria
Monitoring Of Rehabilitation Of Degraded Rangelands, B. Bouchareb, R. Hammouda, D. Nedjraoui
IGC Proceedings (1977-2023)
The Algerian steppe covers an area of about 20 million ha, and is the barrier between the desert and the Mediterranean region. With more than 20 million sheep, overgrazing is an important issue resulting in continued degradation of the natural resources (Nedjraoui and Bedrani 2008). Trials of the rehabilitation of these ecosystems were undertaken in a participatory process with farmers complemented by some detailed monitoring of the responses in experimental plots (Hammouda 2009; Bouchareb 2012). This study reports on some results of the ecological monitoring and evaluation for a participatory project, in the steppe of South Algiers, conducted by a …
Case Study: Conservative Stocking On The Fitzroy River Floodplain; Jubilee Downs And Quanbun Downs, Central Kimberley Western Australia,
2020
Department of Agriculture and Food, Australia
Case Study: Conservative Stocking On The Fitzroy River Floodplain; Jubilee Downs And Quanbun Downs, Central Kimberley Western Australia, Kath Ryan, Anne Marie Huey, Paul Novelly, Keith Anderson
IGC Proceedings (1977-2023)
Keith and Karen Anderson and family run a breeder operation on Jubilee Downs and Quanbun Downs in the Fitzroy Valley of Western Australia (18°21' S, 125°18' E). These adjacent pastoral leases are in the shire of Derby/West Kimberley. The Andersons have been managing Jubilee Downs station since 1985. Quanbun Downs station was purchased in 2002, and a farm in the northern agricultural region of WA has been recently added for use as a finishing block. The current combined herd for Jubilee Downs and Quanbun Downs is around 8,000 head. Keith believes in selling close to his branding percentage and that …
Community Structure Of Oribatid Mites In Improved Grasslands: A Case Study From Central India,
2020
Central Arid Zone Research Institute, India
Community Structure Of Oribatid Mites In Improved Grasslands: A Case Study From Central India, Sharmila Roy
IGC Proceedings (1977-2023)
About 14% of the land in Central India (25º20'-26º30'N and 79º45'-78º15'E) is classified as grass/range lands, most of which is degraded. In order to improve condition class of these areas, several land development programs have been undertaken by various agencies. However, long term implications of such interventions are not understood properly. Since oribatid mites constitute an important part of soil ecosystem(Noti et al. 2003) having intricate relations with the niches in soil and their community structure is a swift reflection on ecosystem habitat structure, complexity and other factors, this study was planned.
The Impact Of Surface Coal Mining On The Pre- And Post-Mining Agricultural Potential Of The Grassland Biome Of Southern Africa,
2020
University of Pretoria, South Africa
The Impact Of Surface Coal Mining On The Pre- And Post-Mining Agricultural Potential Of The Grassland Biome Of Southern Africa, Wayne F. Truter, T. Bredell, J. Olivier, D. Van Heerden, P. Mosebi
IGC Proceedings (1977-2023)
Surface mining of coal is widespread in the grassland areas of the Mpumalanga Province in South Africa, and is the main cause of many environmental impacts in this agriculturally important region. To ensure healthy and productive vegetation after the reclamation process, disturbed soils need to be ameliorated and re-vegetated with locally adapted grass species to protect, preserve and improve soils for future agricultural use. To date, soil compaction is regarded as one of the main factors that cause severe restrictions in the effective rooting depth of plants, and the level of compaction is strongly influenced by altered soil water contents, …
Developing Minimal-Input Techniques For Invasive Plant Management: Perimeter Treatments Enlarge Native Grass Patches,
2020
University of Nevada, Las Vegas
Developing Minimal-Input Techniques For Invasive Plant Management: Perimeter Treatments Enlarge Native Grass Patches, Scott R. Abella, Lindsay P. Chiquoine, Jeremy M. Moss, Eric D. Lassance, Charles D. Schelz
Hospitality Faculty Research
There is a continual need for invasive plant science to develop approaches for cost-effectively benefiting native over nonnative species in dynamic management and biophysical contexts, including within predominantly nonnative plant landscapes containing only small patches of native plants. Our objective was to test the effectiveness of a minimal-input strategy for enlarging native species patches within a nonnative plant matrix. In Pecos National Historical Park, New Mexico, USA, we identified 40 native perennial grass patches within a matrix of the nonnative annual forb kochia [Bassia scoparia (L.) A.J. Scott]. We mechanically cut B. scoparia in a 2-m-wide ring surrounding the perimeters …
Salt-Tolerant Forages For Irrigated Saline Land In Central Iraq,
2020
Ministry of Agriculture, Iraq
Salt-Tolerant Forages For Irrigated Saline Land In Central Iraq, Iman S. Salman, Edward G. Barrett-Lennard, Kareem Kadhim, Shoaib Ismail, Hayley C. Norman
IGC Proceedings (1977-2023)
Salinity is a major problem in the irrigated zones of central and southern Iraq. We investigated biomass production from five salt-tolerant forage species, represented by 15 introduced accessions and 3 local accessions, during two successive summer growing seasons. Species included pearl millet (Pennisetum glaucum), sorghum (Sorghum bicolour), guar (Cluster bean; Cyamopsis tetragonoloba), cowpea (Vigna unguiculata) and sesbania (Sesbania aculeata and S. sesban). The research site was located in the Al-Dujaila irrigation project area in Wasit. The soil had a silty clay texture with moderate salinity (ECe 10-20 dS/m). The site was …
Improving Grassland Quality In Communal Arable Lands In The Eastern Cape Province, South Africa,
2020
EC DRAR, South Africa
Improving Grassland Quality In Communal Arable Lands In The Eastern Cape Province, South Africa, Theunis L. Morgenthal, Pieter W. Conradie, Gideon Jordaan, Unathi Gulwa, Neil Ballard, John Howieson
IGC Proceedings (1977-2023)
Overgrazing and shifting cultivation practise have severely degraded communal lands in the Eastern Cape of South Africa. Methods need to be developed to improve forage quality of grazing land, especially previously cultivated lands. The aim of the study was to investigate legume species to rehabilitate arable lands abandoned from cropping, to enhance their forage quality, productivity and ecological integrity. The study was conducted in seven communities within the Eastern Cape Province. This study showed that within the communal lands studied extensive areas have been cultivated and the majority of this land is now poorly utilised. Natural grasslands ploughed for cropping …
Identifying And Addressing Sustainable Pasture And Grazing Management Options For A Major Economic Sector–The North Australian Beef Industry,
2020
CSIRO, Australia
Identifying And Addressing Sustainable Pasture And Grazing Management Options For A Major Economic Sector–The North Australian Beef Industry, Neil D. Macleod, Joe C. Scanlan, Lester I. Pahl, Giselle L. Whish, Robyn A. Crowley
IGC Proceedings (1977-2023)
Sustainable use of the northern grazing lands is a long-standing issue for management and policy, heightened by projections of increased climatic variability, uncertainty on forage supplies, vegetation complexes, and weeds and diseases. Meat and Livestock Australia has supported a large study to explore sustainable grazing management strategies and increase the capacity of the sector to address climate change. Potential options were explored by bio-economic modeling of ‘representative’ beef enterprises defined by pastoralists and supported by regional research and extension specialists. Typical options include diversification, infrastructure, flexible stocking rates, wet season resting, and prescribed fire. Concurrent activities by another team included …
Grassland Rehabilitation Through Re-Designing Livestock Management Systems,
2020
Inner Mongolia Agricultural University, China
Grassland Rehabilitation Through Re-Designing Livestock Management Systems, Guodong Han, Zhongwu Wang, Zhiguo Li, Mengli Zhao, David R. Kemp, David L. Michalk, Kris M. Havstad
IGC Proceedings (1977-2023)
Grasslands are one of the most important land types supplying critical ecosystem services including feed for livestock grazing. They occupy ~54% of the world’s ice-free land surface. China contains the third largest area of grassland in the world, ~400 M ha, ~40% of China’s land surface. Chinese grasslands are severely degraded primarily due to overgrazing, which contributes to local poverty because of poor livestock production. To both recover the degraded grassland and to enhance the local herders’ income, a large farm-scale experiment was conducted in a desert steppe of Inner Mongolia, China from 2007 to 2012. We used a baseline …
Incidence And Control Of Worm Burdens In Bali Bulls Fed Forage Tree Legumes In West Nusa Tenggara,
2020
Assessment Institute for Agricultural Technology, Indonesia
Incidence And Control Of Worm Burdens In Bali Bulls Fed Forage Tree Legumes In West Nusa Tenggara, Luh Gde Sri Astiti, Baiq Tutik Yuliana, Muhammad Fauzan, Tanda Panjaitan
IGC Proceedings (1977-2023)
Bali cattle are the predominant domestic cattle raised in smallholder systems in eastern Indonesia. They are characterised by low growth rates partly due to genetic factors but largely due to insufficient and/or poor quality feed and management. Internal parasites can have severe impacts on animal production and are a common problem in eastern Indonesia due to poor hygiene and management practices. Prevalence, or the ratio of number of worm infestation occurrences, in the cattle population is high in West Nusa Tenggara. Astiti et al. (2011) reported prevalence levels of 81% in some area of Sumbawa Island and Astiti and …
The Occurrence Of Alfalfa Weevil And Its Major Parasitoid Bathyplectes Curculionis Across Saskatchewan, Canada,
2020
Agriculture and Agri-Food Canada, Canada
The Occurrence Of Alfalfa Weevil And Its Major Parasitoid Bathyplectes Curculionis Across Saskatchewan, Canada, Juliana J. Soroka
IGC Proceedings (1977-2023)
The alfalfa weevil Hypera postica (Gyllenhal) (Coleoptera: Curculionidae) is one of the most destructive insect pests of alfalfa herbage in North America. Palearctic in origin, the weevil was first found in North America near Salt Lake City, Utah, in 1902 (Titus 1911), with the first Canadian record in southeast Alberta and southwest Saskatchewan in 1954 (Hobbs et al. 1959; Beirne 1971). Alfalfa weevil became an economic pest on the Canadian prairies only in the area of first location, and its distribution remained below the 51st parallel North latitude for about 40 years. In the mid-1990s, however, the weevil expanded …
Environment Impact Of Moxidectin In Sheep Faeces Upon Dung Diptera In South Of Brazil,
2020
Federal University of Paraná, Brazil
Environment Impact Of Moxidectin In Sheep Faeces Upon Dung Diptera In South Of Brazil, Alda L. G. Monteiro, Susana Gilaverte, Maria Angela M. Fernandes, Alessandre P. Colavite, Paulo Guimarães, Mylena T. P. Peres, Cláudio J. A. Da Silva
IGC Proceedings (1977-2023)
Dung Diptera can be beneficial to the environment because the adults feed on, deposit eggs in, and the larval nutrition depends on the feaces of animals which significantly im-proves nutrient cycling. However, anthelmintics which are used to control internal parasites have long persistence with a long half-life in faeces. This is harmful to the coprofauna and may adversely affect the diversity of this environmen-tal system. In this study we evaluated the toxicity of moxidectin anthelmintic on the dung Diptera population in pastures of South of Brazil.
An Ecological Monitoring Of The Plateau Pika And Its Impact On Grassland–An Experiment In The Yushu District, Qinghai Province Of China,
2020
University of Miyazaki, Japan
An Ecological Monitoring Of The Plateau Pika And Its Impact On Grassland–An Experiment In The Yushu District, Qinghai Province Of China, Masahiro Tasumi, Nobumi Hasegawa, Akira Fukuda, Rende Song, Guomei Li, Jiahua Yang, Manabu Tobisa, Sachiko Idota
IGC Proceedings (1977-2023)
The plateau pika (Ochotona curzoniae; see Fig.1 for photo) is a small mammal that lives in the alpine grasslands of the Tibetan Plateau. There are several uncertainties existing in the ecological behavior of the plateau pika and its impact on the alpine grasslands, and this impact has long been a subject under discussion. The mammal will have created both positive and negative impacts to the plateau environment and the alpine ecology. In China the plateau pika is regarded as a pest and has been a target of control or extermination because it is a competitor with livestock for …
Soil Fertility Under Grassland Compared To Other Land Uses In Acid Soil Of Himachal Pradesh, India,
2020
Indian Institute of Soil and Water Conservation, India
Soil Fertility Under Grassland Compared To Other Land Uses In Acid Soil Of Himachal Pradesh, India, Sharmistha Pal, Pankaj Panwar, D. R. Bhardwaj
IGC Proceedings (1977-2023)
In the last decades severe changes in land use occurred in tropical countries, due to increasing population and their demand for food resources. Forest land is rapidly converted into agriculture or pastureland which may cause significant changes in soil fertility. Land-use exerts significant effect on nutrient availability and may also influence secondary succession and biomass production (Lu et al., 2002). Nutrient cycling in agroforestry is in between natural forest ecosystems of the tropics and most of the agricultural systems with are ‘‘leaky’’ having higher nutrient losses. Research indicated that decline of soil organic matter may occur due to conversion …
Mix Cropping Of Smooth Vetch And Barley Under Cold Rainfed Conditions,
2020
Islamic Azad University, Iran
Mix Cropping Of Smooth Vetch And Barley Under Cold Rainfed Conditions, Mahmoud Pouryousef, Khoshnood Alizadeh
IGC Proceedings (1977-2023)
Drylands are mainly used for wheat and food legumes production and there is increasing demand to forage crops in these areas. About 2-3 million hectares of arable lands across Iran are left as fallow every year (Alizadeh, 2010) which could be used to suitable forage crops. Considerable variation has been reported in herbage and grain yields of improved vetches (Vicia spp.) under Iranian rainfed conditions. Introduction of annual feed legumes in dryland cropping systems that are dominated by cereals would reduce pest and disease risk and increase sustainable productivity. However, vetch species as monocultures produce low forage yield under …
Nitrate Accumulation And Utilization In Fodder Oats Varieties As Affected By Different Nitrogen Levels,
2020
Punjab Agricultural University, India
Nitrate Accumulation And Utilization In Fodder Oats Varieties As Affected By Different Nitrogen Levels, Gurjeet Kaur, Meenakshi Goyal, Pritpal Singh
IGC Proceedings (1977-2023)
Importance of fodder crops in agriculture needs no emphasis because of the fact that regular fodder availability is basic requirement for livestock production. The area under fodder in Punjab is 2.03 million hectares with total production of 45 million tons, which is not sufficient to meet the maintenance requirements of livestock. To improve the quality of milk production it is important that animals are fed with good quality of fodder. Nitrogen is an essential primary nutrient for plant growth and plays an important role in productivity of forage crops. The application of N at various growth stages is one of …
Quality Of Grass Fodder Cowpea Mixtures As Influenced By Row Ratio,
2020
Kerala Agricultural University, India
Quality Of Grass Fodder Cowpea Mixtures As Influenced By Row Ratio, S. Lakshmi, M. R. Anita
IGC Proceedings (1977-2023)
A serious drawback of sustainable livestock production system in Kerala is the inadequate seasonal distribution of fodder production. The quantity and quality of herbage available in the lean dry months from January to May is very low. Therefore it is imperative to develop a fodder production system that increases the availability and improves the quality of herbage in the dry summer months. Intensive fodder production systems based on grasses are increasingly becoming important to the dairy farmers of Kerala. Development of compatible persistent grass legume mixtures could alleviate acute seasonal livestock feed deficiency in dry seasons (Njarui et al., 2004). …
