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Articles 4381 - 4410 of 9752

Full-Text Articles in Agronomy and Crop Sciences

Participative Decision Mechanisms For Sustainable Development In Co-Operative Livestock Systems In Europe, E. Ruoss, A. Boltshauser, Pius Hofstetter Aug 2023

Participative Decision Mechanisms For Sustainable Development In Co-Operative Livestock Systems In Europe, E. Ruoss, A. Boltshauser, Pius Hofstetter

IGC Proceedings (1977-2023)

Alpine pastures have been used for centuries and have a specific economic, ecological and cultural history that gives local identity. Alpine pastures, used only in summer, are endangered due to modern farming methods and economic conditions. The consequences include loss of biodiversity, traditionally used landscapes and socio-cultural identity in marginal regions (Riseth et al., 2003). As the Entlebuch UNESCO Biosphere Reserve was established by its inhabitants in a participative process, sustainable development in alpine pastures is also implemented by stakeholder participation. The methodology of participative decision mechanisms were used in two EU-projects: LACOPE: Landscape development, Biodiversity and Co-operative Livestock …

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Allocating Grazing Resources With Kansasgrazer® And Making Management Decisions In A Stocker Operation, Joseph L. Moyer, J. O. Fritz Aug 2023

Allocating Grazing Resources With Kansasgrazer® And Making Management Decisions In A Stocker Operation, Joseph L. Moyer, J. O. Fritz

IGC Proceedings (1977-2023)

Management decisions for forage-beef cattle production systems are complex because of the many interrelated factors in the plant-animal complex. Evaluation of a system and effects of any changes to it are critical, however, because of the impact that any factor may have on the operation. A computer program to evaluate forage-beef cattle systems would enable producers to make more informed management decisions. Several such programs are available in Kansas, but they are not widely used because of their limited scope, user-friendliness and/or flexibility. Thus, an earlier program derived from the KYBEEF model by Bullock et al. (1983) was modified …

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A Farmer-Based Decision Support System For Managing Pasture Quality On Hill Country, I. M. Brookes, D. I. Gray Aug 2023

A Farmer-Based Decision Support System For Managing Pasture Quality On Hill Country, I. M. Brookes, D. I. Gray

IGC Proceedings (1977-2023)

Despite considerable effort to promote formal feed budgeting in New Zealand, survey data suggests it is only adopted by 20% of farmers (Nuthall & Bishop-Hurley, 1999). Recent work (Gray et al., 2003) has identified that farmers may use a different approach - micro-budgeting - to manage feed. Rather than operate at a whole farm level, micro-budgeting focuses at the paddock level. This paper describes micro- budgeting as used by a high performing hill country sheep and cattle farmer to manage pasture quality over spring and a decision support model developed to help other farmers undertake this process.

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Enhancing Grasslands Education With Decision Support Tools, Helen G. Daily, J. M. Scott, J. M. Reid Aug 2023

Enhancing Grasslands Education With Decision Support Tools, Helen G. Daily, J. M. Scott, J. M. Reid

IGC Proceedings (1977-2023)

We have successfully used Decision Support Tools (DST) relevant to the management of grazing enterprises to enhance problem solving skills of undergraduates in Australia. Tools such as GrassGrotm (Moore et al., 1997) and GrazFeedtm (Freer et al., 1997) are accessed from a central server by authorised users at many widely dispersed Universities across Australia using remote access to thin-client technology via an Internet portal. This has been supplemented with training for lecturers. Experience in developing appropriate teaching and learning materials and the reliable delivery of simulation software to many clients has enhanced learning outcomes at tertiary …

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Systems Simulation Assists Land Capability Estimation In Australia’S Temperate Grasslands, Richard J. Simpson, L. Salmon, P. Graham, A. D. Moore, A. Stefanski, D. J. Marshall, J. R. Donnelly Aug 2023

Systems Simulation Assists Land Capability Estimation In Australia’S Temperate Grasslands, Richard J. Simpson, L. Salmon, P. Graham, A. D. Moore, A. Stefanski, D. J. Marshall, J. R. Donnelly

IGC Proceedings (1977-2023)

Intensification of production in the water-limited grasslands of temperate Australia has increased the need to quantify their sustainable carrying capacity. Empirical rainfall-based rules for estimating stocking rate fail when used in districts with differing weather patterns, or when soil and pasture resources limit the utilisation of rainfall. Grazing systems simulation should help to overcome these problems because local conditions can be taken into account. This study investigated the impact of soil resources on potential stocking rate, profitability and production risk in a local climatic area of the southern tablelands of NSW, Australia.

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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 Aug 2023

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 (1977-2023)

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.

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Forecasting Forage Yields Using The Arima Model In Pastoral Areas Of East Africa, Robert J. Kaitho, J. W. Stuth, Jay Angerer, A. A. Jama Aug 2023

Forecasting Forage Yields Using The Arima Model In Pastoral Areas Of East Africa, Robert J. Kaitho, J. W. Stuth, Jay Angerer, A. A. Jama

IGC Proceedings (1977-2023)

Predicting forage supply is an age old quest for pastoralists, particularly in fragile and drought- prone areas of Africa. Traditional methods of forecasting forage used by many communities have become less effective due to climate change, frequent droughts and decline of grazing areas. Conflicts relating to available forage and water resources are increasing, because more marginal lands are put to crop production. A new forage forecasting technology has been developed that provides a comprehensive view of current forage condition (Stuth et al., 2004). A multiple species grazing land plant growth hydrology based model (PHYGROW) was parameterised with site-specific soil, …

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Sensitivity Analysis Of A Growth Simulation For Finishing Lambs, P. C. H. Morel, B. Wildbore, I. M. Brookes, Paul R. Kenyon, R. W. Purchas, S. Ramaswami Aug 2023

Sensitivity Analysis Of A Growth Simulation For Finishing Lambs, P. C. H. Morel, B. Wildbore, I. M. Brookes, Paul R. Kenyon, R. W. Purchas, S. Ramaswami

IGC Proceedings (1977-2023)

A stochastic lamb growth simulation model with a set of heuristic rules has been developed to evaluate management strategies for a solely pastoral grazing system in New Zealand (Morel et al., 2005). In the present paper the results of a sensitivity analysis for this model are presented.

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A Model To Evaluate Buying And Selling Policies For Growing Lambs On Pasture, P. C. H. Morel, B. Wildbore, I. M. Brookes, Paul R. Kenyon, R. W. Purchas, S. Ramaswami Aug 2023

A Model To Evaluate Buying And Selling Policies For Growing Lambs On Pasture, P. C. H. Morel, B. Wildbore, I. M. Brookes, Paul R. Kenyon, R. W. Purchas, S. Ramaswami

IGC Proceedings (1977-2023)

In pastoral sheep finishing systems, farmers aim to maximize profitability by deciding on when and how many animals to buy and/or sell, while taking into account feed availability and current prices. This paper describes a stochastic lamb growth simulation model with a set of heuristic rules, which has been developed to financially evaluate different management strategies for growing lambs on pasture.

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Canasta - Crop Niche Selection For Tropical Agriculture, A Spatial Decision Support System, R. O'Brien, M. Peters, R. Corner, S. Cook Aug 2023

Canasta - Crop Niche Selection For Tropical Agriculture, A Spatial Decision Support System, R. O'Brien, M. Peters, R. Corner, S. Cook

IGC Proceedings (1977-2023)

Farmers in the developing world frequently find themselves in uncertain and risky environments, often having to make decisions based on very little information. Risks for smallholder farmers are often critical because of their poverty. In addition, in the tropics and subtropics, the natural environment is spatially and temporally variable and often harsh, thereby increasing the uncertainty faced by these farmers. This research aims to improve forage adoption decisions in the developing world, thereby increasing sustainable intensification and ultimately contributing to increased sustainable world food production and the alleviation of under-nutrition.

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An Internet-Based Tool For Use In Assessing The Likely Effect Of Intensification On Losses Of Nitrogen To The Environment, N. J. Hutchings, B. M. Petersen, I. S. Kristensen, N. Detlefsen, M. S. Jørgensen Aug 2023

An Internet-Based Tool For Use In Assessing The Likely Effect Of Intensification On Losses Of Nitrogen To The Environment, N. J. Hutchings, B. M. Petersen, I. S. Kristensen, N. Detlefsen, M. S. Jørgensen

IGC Proceedings (1977-2023)

The EU Nitrates, Habitat and National Emissions Ceilings directives and the Kyoto Agreement mean that agricultural losses of NO3, NH3 and N2O are under scrutiny by national and international environmental authorities. When farmers wish to intensify their operations, the authorities must then assess the likely environmental impact of the change in operation. The FARM-N internet tool was developed to help farmers and authorities agree how the farm will be structured and managed in the future, and to provide an objective assessment of the environmental losses that will result.

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Software Ppbb_Mx: Potential Productivity Modelling Of Brachiaria Brizantha (Cultivars Marandu And Xaraés), E. R. Detomini, D. Dourado Neto Aug 2023

Software Ppbb_Mx: Potential Productivity Modelling Of Brachiaria Brizantha (Cultivars Marandu And Xaraés), E. R. Detomini, D. Dourado Neto

IGC Proceedings (1977-2023)

Recent improvements in computer capacity and technology allow models to be built to simulate the attributes of many agricultural processes and systems. Although Brachiaria brizantha is the most cultivated tropical grass species in Brazil, there is no single tool to predict its production under optimal conditions. The objective of this paper is to present PPBB_MX software to calibrate and simulate (using a stochastical procedure) the shoot and total biomass potential productivity (output variables) of Brachiaria brizantha as a function of the following input variables: local latitude, season (from cutting date - Julian day), length of regrowth (time, days) and climate …

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N-Mineralisation And Phosphorous: Important Elements In Decision Support For Grassland Systems, A. Lisbeth Nielsen, C. C. Hoffmann Aug 2023

N-Mineralisation And Phosphorous: Important Elements In Decision Support For Grassland Systems, A. Lisbeth Nielsen, C. C. Hoffmann

IGC Proceedings (1977-2023)

Leaching of N and P from extensively managed grasslands on organic soils varies considerably. In environmentally sensitive areas it is important to diminish leaching by appropriate agricultural management. In Denmark low grazing intensity and management without fertilisation have been given a high priority. The type of soil has not been equally in focus, and it seems that the effect of cutting, compared to grazing, resulting in a higher removal of nutrients (e.g. Benke et al., 1992) can be used more strategically. The objective of this case study was to combine data from management strategies with data from leaching examinations …

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Artturi Assists Finnish Advisers And Farmers To Succeed In Grass-Based Dairy Production, Marketta Rinne, Pekka Huhtanen, Kaisa Kuoppala, H. Nikander, J. Nousiainen, M. Hellämäki, L. Nyholm, J. Helminen, K. Lampinen, M. Maisi, M. Korhonen Aug 2023

Artturi Assists Finnish Advisers And Farmers To Succeed In Grass-Based Dairy Production, Marketta Rinne, Pekka Huhtanen, Kaisa Kuoppala, H. Nikander, J. Nousiainen, M. Hellämäki, L. Nyholm, J. Helminen, K. Lampinen, M. Maisi, M. Korhonen

IGC Proceedings (1977-2023)

Artturi is a collective name for a wide range of services. It is a common tool for different bodies who share an interest in strengthening grass-based dairy production in Finland: research, advisory service and industries. The Service is named after A. I. (Artturi Ilmari) Virtanen, the Finnish scientist who was awarded the Nobel prize in 1945, partly based on his work in developing the ensiling process of grass. The Artturi web site is available in Internet at: http://www.agronet.fi/artturi. Access to Artturi Services is free and no registration is required. The language used is Finnish. During summer 2003, 15,000 visits were …

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Involvement Of Maasai Pastoralists In Participatory Rangeland Management Planning And Implementation, Evelyne Kiptot, W, Ego, D. Ochieng, A. Mohamed Aug 2023

Involvement Of Maasai Pastoralists In Participatory Rangeland Management Planning And Implementation, Evelyne Kiptot, W, Ego, D. Ochieng, A. Mohamed

IGC Proceedings (1977-2023)

The pastoral Maasai lifestyle was and still is traditionally based on subsistence dairy and meat production. But with population increase, the rangelands can no longer sustainably support livestock production systems. Most of the rangelands which are used for grazing have been subdivided and partially cleared to pave way for cultivation, because of increased population pressure (Ego et al., 1999). This has led to a tendency to overgraze, thus impacting negatively on secondary production from the range. In order to effectively reverse this trend, the users of the rangeland resources were brought together to analyse constraints and opportunities for sustainable …

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Management Of Pasture Quality For Sheep On New Zealand Hill Country, D. I. Gray, J. I. Reid, P. D. Kemp, I. M. Brookes, D. Horne, Paul R. Kenyon, C. Matthew, S. T. Morris, I. Valentine Aug 2023

Management Of Pasture Quality For Sheep On New Zealand Hill Country, D. I. Gray, J. I. Reid, P. D. Kemp, I. M. Brookes, D. Horne, Paul R. Kenyon, C. Matthew, S. T. Morris, I. Valentine

IGC Proceedings (1977-2023)

The control of pasture quality over spring is central to the achievement of high levels of sheep performance on hill country. Despite this, with the exception of the work of Lambert et al. (2000), little is known about how farmers actually manage pasture quality. The purpose of this research was to describe how a high performing hill country farmer manages pasture quality on their sheep area over spring and from this develop a framework that will assist other farmers improve their pasture management.

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Decision Support System For Grassland-Based Sheep Production In The Chilean Patagonia, R. R. Vera, S. Morales, C. Aguilar Aug 2023

Decision Support System For Grassland-Based Sheep Production In The Chilean Patagonia, R. R. Vera, S. Morales, C. Aguilar

IGC Proceedings (1977-2023)

Temporal decision-making in sheep production systems of the Chilean Patagonia is influenced by forage availability in existing paddocks, which in turn is determined by previous use, localisation, climate and soil. Also, production strategies are evolving, with a trend towards fat lamb production, introduction of new breeds and a reduction in the importance of wool production. The objective of this study was to develop an initial version of a spatial empirical simulation model based on extremely limited information, to predict forage growth and sheep production so that decision-makers can assess alternative production strategies.

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Accelerating The Impacts Of Participatory Research And Extension: Lessons From Laos, Joanne E. Miller, Viengxay Photakoun, J. G. Connell Aug 2023

Accelerating The Impacts Of Participatory Research And Extension: Lessons From Laos, Joanne E. Miller, Viengxay Photakoun, J. G. Connell

IGC Proceedings (1977-2023)

The role of participatory research and extension in stimulating farmer uptake and adaptation of beneficial technologies has been demonstrated over the last two decades in both developed and developing countries. The challenge is to move beyond simply trialling new technologies with farmers on a small scale to enabling significant livelihood impacts across larger numbers of households, villages and districts. This paper presents results of a project in Lao PDR exploring ways to accelerate and spread localised impacts in complex upland farming systems.

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A Decision Support System For Monitoring Livestock Diet Quality And Performance: Verification Study On Cattle, Adami Tulu, Ethiopia, A. A. Jama, G. Tolleson, J. W. Stuth, Abule Ebro, K. Zander, Robert J. Kaitho Aug 2023

A Decision Support System For Monitoring Livestock Diet Quality And Performance: Verification Study On Cattle, Adami Tulu, Ethiopia, A. A. Jama, G. Tolleson, J. W. Stuth, Abule Ebro, K. Zander, Robert J. Kaitho

IGC Proceedings (1977-2023)

Fecal profiling technology based on near infrared spectroscopy (NIRS) has been widely used in the U.S. to predict the diet quality and performance of free-ranging animals (e.g. Leite & Stuth 1995, Lyons & Stuth 1992, Lyons et al., 1993, Stuth et al., 1999, Tolleson et al., 2001). This technology is linked with the Nutritional Balance Analyzer (NUTBAL-PRO) model to form the core of a nutritional advisory system for livestock producers in the United States. This model predicts changes in body weight and condition for a broad range of livestock classes for cattle, sheep and goats. To test …

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Irish Grassland Association: Delivering The Benefits From Grassland, S. Flanagan Aug 2023

Irish Grassland Association: Delivering The Benefits From Grassland, S. Flanagan

IGC Proceedings (1977-2023)

The Irish Grassland Association (IGA) is Ireland's leading forum for discussing the science of grass and animal production, the economics and finances of dairy, beef cattle and sheep farm enterprises. Membership is 800 and is a lively mix of progressive farmers (70%), research scientists, advisers and agribusiness personnel. The IGA is a member of the European Grassland Federation and has close ties with the Ulster Grassland Society, Fermanagh Grassland Club and the British Grassland Society.

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The Role Of The British Grassland Society In Technology Transfer, J. M. Crichton Aug 2023

The Role Of The British Grassland Society In Technology Transfer, J. M. Crichton

IGC Proceedings (1977-2023)

Since its formation in 1945, the British Grassland Society (BGS) has been active in disseminating information to the grassland and associated sectors of agriculture and has adapted to a change from production-based agriculture to its current output mix of private and public goods. The BGS has as its remit: (a) improved production and utilisation of grass and forage crops for the promotion of agriculture and the public benefit, and (b) the advancement of education and research in grass and forage crop production and utilisation, and the publication of results.

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Testing Of Resistance To Downy Mildew On Several Sweet Corn Inbred Lines Of 7th Generation, Heri Kustanto Aug 2023

Testing Of Resistance To Downy Mildew On Several Sweet Corn Inbred Lines Of 7th Generation, Heri Kustanto

Jurnal Kultivasi

Sweet corn is one of the most well-known horticultural crop commodities and can adapt to various climates and environments. Efforts to control downy mildew disease continue to be carried out in collaboration with various parties in different ways, including genetic improvement of the varieties planted. The purpose of this study was to test the resistance of the 7th generation of sweet corn inbred lines to downy mildew and to find out the phenotypic characters that affect downy mildew. The new inbred lines obtained from the results of a long breeding process will be better tested for resistance to downy mildew …

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Evaluating The Effect Of Biochar Soil Amendments On Belonolaimus Longicaudatus Populations Damaging Bermudagrass In South Carolina, Malone Thomason Aug 2023

Evaluating The Effect Of Biochar Soil Amendments On Belonolaimus Longicaudatus Populations Damaging Bermudagrass In South Carolina, Malone Thomason

All Theses

Belonolaimus longicaudatus Rau, (1958) (sting nematode) is a prevalent plant-parasitic nematode found in association with Cynodon spp. (bermudagrass) in South Carolina (Ye et al., 2012). Due to the persistence of the pest, long-term management strategies are necessary. Applications of biochar and compost amendments have reduced nematodes in various crop systems, but research on turfgrass systems is limited. The objectives of the studies were to determine: (1) The effect of topdressing or soil incorporated biochar amendments on sting nematode populations, and (2) The effect of topdressing or soil incorporated amendments on turf quality. A field study was established to examine topdressings …

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B. R. Wells Arkansas Rice Research Studies 2022, J. Hardke, X. Sha, N. Bateman Aug 2023

B. R. Wells Arkansas Rice Research Studies 2022, J. Hardke, X. Sha, N. Bateman

Arkansas Agricultural Experiment Station Research Series

Arkansas is the leading rice producer in the United States. The state represents 50.1% of total U.S. rice production and 49.8% of the total acres planted to rice in 2022. Rice cultural practices vary across the state and across the U.S. However, these practices are also dynamic and continue to evolve in response to changing political, environmental, and economic times. This survey was initiated in 2002 to monitor and record changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county extension agents in each of the counties in Arkansas that produce rice. Questions …

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Portuguese Society Of Pastures And Forages, J. Potes, E. V. Lourenço, T. Carita Jul 2023

Portuguese Society Of Pastures And Forages, J. Potes, E. V. Lourenço, T. Carita

IGC Proceedings (1977-2023)

The Portuguese Society of Pastures and Forages (SPPF) was born from a course on pastures and forages held in the National Plant Breeding Station of Elvas (where the headquarters of SPPF are located) in 1979. It was organised by the head of the Pastures and Forages Department, David Gomes Crespo, who was the first and founder member. According to Abreu et al. (1999), the structure established was that of a Scientific Society and was considered by the Government as a Service of Public Interest. It gathered inspiration from the British Grassland Society, the Association Francaise pour la Production Fourragére, …

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The Activities And Aspirations Of The Estonian Grassland Society, A. Selge, R. Viiralt, Tiina Köster Jul 2023

The Activities And Aspirations Of The Estonian Grassland Society, A. Selge, R. Viiralt, Tiina Köster

IGC Proceedings (1977-2023)

The aim of the Estonian Grassland Society (EGS) is to develop the flow of grassland-based knowledge between different stakeholders and multidisciplinary research and to create international contacts. The EGS is a non-profit organisation and more than 100 interdisciplinary researchers, plant breeders, advisors and farmers are actively involved in the work of the society. The interdisciplinary activities are becoming more and more attractive and important and bring together different target groups. At present seminars, which are focused on the adaptation producers to the EU rules and support system for farmers are attractive. Nowadays the essential goal for the EGS is to …

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The Role Of The New Zealand Grassland Association In Technology Interaction And Policy Evolution, M. W. Calder Jul 2023

The Role Of The New Zealand Grassland Association In Technology Interaction And Policy Evolution, M. W. Calder

IGC Proceedings (1977-2023)

The New Zealand Grassland Association (NZGA) aims for a two-way communication between grassland researchers and pastoral farmers on research findings and farming trends and opportunities. Annual conferences, special symposia, print and electronic publications as well as the web site are used to further these aims. Policy evolution is indirect, using the relationship with agribusiness sponsors and members to promote research objectives.

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Slovenian Grassland Society: Science, Profession And Practice, Branko Kramberger, Matej Vidrih, T. Vidrih, J. Čop Jul 2023

Slovenian Grassland Society: Science, Profession And Practice, Branko Kramberger, Matej Vidrih, T. Vidrih, J. Čop

IGC Proceedings (1977-2023)

The Slovenian Grassland Society (SGS) was established in 1993. It has around 120 members. A half of members are active farmers, around 10% are scientists, the rest are employed in extension services or other agricultural enterprises (seed companies, administration bodies, etc.)

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Role Of Hellenic Range And Pasture Society In Technology Interaction And Policy Evolution, T. G. Papachristou, P. D. Platis, V. Papanastasis, A. Ainalis Jul 2023

Role Of Hellenic Range And Pasture Society In Technology Interaction And Policy Evolution, T. G. Papachristou, P. D. Platis, V. Papanastasis, A. Ainalis

IGC Proceedings (1977-2023)

The Hellenic Range and Pasture Society (HRPS) was founded in 1992 and is a non-profit scientific association. It is composed of 74 members with a common interest in the study, management, and rational use of rangelands and related ecosystems (e.g. pasturelands). The objectives for which the corporation was established are: a) to develop an understanding of rangeland ecosystems and of the principles applicable to the management of rangeland resources (soil, plants, water, and animals), b) to assist all who work with rangelands and pasturelands to keep abreast of new findings and techniques in the science and art of rangeland and …

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Technology Interaction And Policy Evolution; Grassland Society Of Southern Australia Inc, L. L. Bennison Jul 2023

Technology Interaction And Policy Evolution; Grassland Society Of Southern Australia Inc, L. L. Bennison

IGC Proceedings (1977-2023)

The Grassland Society of Southern Australia was formed in 1959 to provide a forum for the transfer of information, ideas and experiences in relation to all aspects of grassland establishment, maintenance, utilisation, persistence and research. The membership of over 2,000 is composed primarily of primary producers (80%) with extension and research scientists comprising 10%, agribusiness 8% and academia 2%. The major interests of members are wool, lamb and beef production, dairying and cropping. The society produces bimonthly newsletters, holds an annual conference with attendances between 400 and 600 annually and has a branch structure that hosts local events. The society …

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