Levels Of Concentrate For Grazing Nelore Crossbred Steers In The Dry Period Of The Year In Brazil,
2023
Universidade Federal de Lavras, Brazil
Levels Of Concentrate For Grazing Nelore Crossbred Steers In The Dry Period Of The Year In Brazil, I. F. Andrade, A. A. F. Baião, E. A. M. Baião, José C. Pinto
IGC Proceedings (1977-2023)
In Brazil, the fattening of supplemented grazing steers accounts for many finished animals in the dry season. This work had the objective of evaluating the effect of levels of concentrate on the fattening of crossbred Nelore steers grazing Brachiaria brizantha pasture in the dry period of the year.
An Appraisal Of The Potential For Soybeans In The United Kingdom,
2023
Royal Agricultural College, UK
An Appraisal Of The Potential For Soybeans In The United Kingdom, C. A. Sawyer, G. P. F. Lane, W. P. Davies
IGC Proceedings (1977-2023)
Soybean is a most important crop worldwide, accounting for 56% of world oilseed production and 69% of world protein meal consumption in 2003 (Soystats, 2004). Since their introduction in the early 1800's, forage soybeans have been grown widely in USA. Used originally as a forage crop, this use largely had been forgotten until Dr T. E. Devine (United States Department of Agriculture, Agricultural Research Service; USDA-ARS) released 4 new forage cultivars. Soybeans potentially offer UK farmers a high quality protein source in a short season and also meet the requirements of supermarket chains to remain GM free. This paper aims …
Production And Non-Production Functions Of Grassland In An Upland Region Of Slovakia,
2023
Grassland and Mountain Agriculture Research Institute, Slovakia
Production And Non-Production Functions Of Grassland In An Upland Region Of Slovakia, J. Cunderlik, L. Gonda, J. Tomaskin
IGC Proceedings (1977-2023)
The importance of grassland lies chiefly in its production of good quality forage that is utilised by cattle and sheep. In upland and mountain regions the non-production functions of grassland such as landscape enhancement or water catchment are especially important. These functions are performed mainly through the sward tillering zone (boundary area between above-ground vegetation and roots) and root characteristics (Jancovic, l985). The objective of this research was to study the biomass above, at, and below ground level of three sward types at different fertilisation levels.
Red Clover In Monoculture Or In Association With Grasses?,
2023
Department of Crop Husbandry and Ecophysiology, Belgium
Red Clover In Monoculture Or In Association With Grasses?, A. De Vliegher, L. Carlier
IGC Proceedings (1977-2023)
Sowing grass or clover under a cereal cover crop or after the harvest of the cereal is common practice, but there still are some questions about seed mixtures regarding monocultures or mixtures, especially when the fodder crop has to be productive for more than 2 years. In this experiment seed mixtures with clovers and grasses in a cereal cover situation were compared in terms of DM yield, energy and protein content and proportions of grass, clover and weeds.
Productive Longevity And Yield Quality Of Galega-Grass Swards,
2023
Latvia University of Agriculture, Latvia
Productive Longevity And Yield Quality Of Galega-Grass Swards, Aleksandr Adamovich
IGC Proceedings (1977-2023)
Fodder galega (Galega orientalis Lam.) is an early maturing, very productive perennial forage legume that fixes atmospheric nitrogen. Unlike other legumes, pure stands of fodder galega provide stable yields of green feed and seeds and do not thin out between the years. The symbiotic potential of fodder galega to grow in mixtures with grasses can be exploited to produce ecologically safe forage and animal products.
Yield And Quality Of Annual Ryegrass Grown In Pure Stand And In Mixtures With Squarrosum Clover,
2023
Universidade de Évora, Portugal
Yield And Quality Of Annual Ryegrass Grown In Pure Stand And In Mixtures With Squarrosum Clover, M. E. V. L. Lourenço, P. M. M. Palma
IGC Proceedings (1977-2023)
The objective of this study was to evaluate the importance of growing annual ryegrass in mixtures instead of ryegrass alone in order to reduce nitrogen application and thereby lowering production costs, and environmental pollution.
Developments In The Use Of Plantain (Plantago Lanceolata) Cultivars In New Zealand Pastures,
2023
PGG Seeds, New Zealand
Developments In The Use Of Plantain (Plantago Lanceolata) Cultivars In New Zealand Pastures, A. V. Stewart, H. G. Judson
IGC Proceedings (1977-2023)
The use of pasture herbs, such as chicory, is commonplace in New Zealand in recent years. This has stimulated interest in other herb species such as plantain (Plantago lanceolata) that often occurs as a ubiquitous weed in temperate pastures throughout the world. In the last decade 2 improved commercial cultivars, Grasslands Lancelot (Rumball et al., 1997) and the erect, winter active Ceres Tonic (Stewart, 1996), have been bred in New Zealand for use in pastures. These cultivars have useful agronomic features that make them valuable for grazing. They are productive in mixtures, palatable to grazing animals, and …
Agronomic Value Of Mixture Of Perennial Rye-Grass Cultivars: Preliminary Results,
2023
Institut National de la Recherche Agronomique, France
Agronomic Value Of Mixture Of Perennial Rye-Grass Cultivars: Preliminary Results, W. G. Do Nascimento, F. Surault, J. C. Emile, Christian Huyghe
IGC Proceedings (1977-2023)
Mixtures of grass and legume species are commonly used in sown grasslands. Mixtures have been shown to be favourable for stable production over cycles and years due to a succession of species over time (Mosimann & Charles, 1996 ; Nie et al, 2004). However, little is known whether the genetic variation in pure stands has an influence on the agronomic value and its variation over seasons.
Yield Components In Annual Ryegrass And Oats Grown In Association And Monoculture,
2023
Universidad Autónoma Chapingo, México
Yield Components In Annual Ryegrass And Oats Grown In Association And Monoculture, Pedro Arturo Martínez Hernández, A. Martínez-Hernández, E. Cortés Díaz, E. Ojeda
IGC Proceedings (1977-2023)
Earliness of oats and higher growth rate of annual ryegrass later in the season explain the higher forage yield of annual ryegrass+oats association over monocultures (Améndola & Morales, 1997). However, changes in yield components of the species grown in association compared to monoculture have not been explored. This study aimed to determine leaf, stem and dead matter yield in annual ryegrass and oats when grown in association and monoculture at different nitrogen (N) levels.
Field Performance Of An Annual Medic Tolerant Of Sulfonylurea Herbicide Residues,
2023
South Australian Research and Development Institute, Australia
Field Performance Of An Annual Medic Tolerant Of Sulfonylurea Herbicide Residues, Jacob H. Howie, C. A. Bell
IGC Proceedings (1977-2023)
Sulfonylurea (SU) herbicides such as triasulfuron, chlorsulfuron and metsulfuron-methyl are used extensively in the cereal-livestock zones of temperate Australia. They are regarded by farmers as effective, cheap and safe-to-apply herbicides with useful levels of residual activity in the year of application. However these residues can persist into following years, particularly in areas with alkaline soils and low rainfall, where their breakdown by microbial action and chemical hydrolysis is significantly reduced. Regenerating pasture legumes typically used in Australian ley farming systems are highly intolerant of even very low residues of SU herbicides (e.g. < 1ppb; Heap, 2000) resulting in severe stunting, reduced dry matter production, lower seed yields, poor persistence and decreased N fixation. In this study we compare the field performance of an artificially induced mutant cultivar (FEH-1) of annual strand medic (Medicago littoralis) with putative tolerance to sulfonylurea …
A New Herbicide (Gf-839) For Long-Term Control Of Annual And Perennial Broad-Leaved Weeds In Grassland,
2023
Dow AgroSciences LLC, UK
A New Herbicide (Gf-839) For Long-Term Control Of Annual And Perennial Broad-Leaved Weeds In Grassland, S. A. Egerton, A. D. Bailey, Louise A. Brinkworth
IGC Proceedings (1977-2023)
The new herbicide GF-839 is a combination of a new active substance aminopyralid and the fully approved active substance fluroxypyr in the quantities 30 g ae/l aminopyralid + 100 g ae/l fluroxypyr. It is an emulsion, water in oil formulation (EO), and will be sold as a foliar acting herbicide for the long-term control of annual and perennial broad-leaved weeds in grassland. Globally aminopyralid can be used for weed control in range and pasture situations and plantations; in addition, uses in oilseed rape and cereals are also being explored. Aminopyralid is the most active halopyridine yet discovered and as a …
Potential Biological Control Agents For Nassella Neesiana (Poaceae) Invading Australian Native Grasslands,
2023
CERZOS, Argentina
Potential Biological Control Agents For Nassella Neesiana (Poaceae) Invading Australian Native Grasslands, F. E. Anderson, M. L. Díaz, D. A. Mclaren
IGC Proceedings (1977-2023)
The introduction and proliferation of exotic stipoid grasses over the past 100 years seriously threatens agricultural productivity and the integrity of Australia's indigenous flora and fauna, particularly its grasslands (McLaren et al., 1998). The full effect on biodiversity by the spread of these grasses is unknown but likely to be major (Hocking, 1998). Conventional control techniques have not stopped the invasion adequately, so it is a priority to find control options to achieve an effective management strategy. A biological control project against Nassella trichotoma and N. neesiana was initiated in 1999 in Argentina. We report on the most recent …
Density And Germination Characteristics Of Seeds Of Bromus Tectorum In Field Seedbanks,
2023
USDA, Agricultural Research Service
Density And Germination Characteristics Of Seeds Of Bromus Tectorum In Field Seedbanks, J. A. Young, Charlie D. Clements
IGC Proceedings (1977-2023)
Bromus tectorum is a highly invasive exotic weed that has spread over millions of hectares of grazing land in the semi-arid regions of far western North America. The annual grass is an important grazing resource, but herbage production is highly variable among years, depending on the amount and periodicity of precipitation. When production is abundant, the accumulations of fine-textured, early-maturing herbage increase the chance of ignition and the rate of spread of wildfires. On certain years the area burned in such fires may be several million hectares. Such fires destroy forage resources and degrade watershed quality on extensive areas as …
Perennial Grass Emergence And Establishment Using A Micro-Nutrient Seed Treatment,
2023
USDA, Agricultural Research Service
Perennial Grass Emergence And Establishment Using A Micro-Nutrient Seed Treatment, Charlie D. Clements, J. A. Young
IGC Proceedings (1977-2023)
Resource managers have become increasingly frustrated with restoration seeding failures in semi-arid and arid environments. In response to this frustration, some resource managers have attempted restoration seedings using non-conventional methodologies such as propriety seed treatments. The exact nature of these propriety treatments is often confidential, but they generally consist of either nutrient or micro-nutrient enrichment or inoculation with unspecified micro-organisms. One of the more popular propriety seed treatment used in Nevada, USA, is GERM-N-8®. This product is a suspension of nutrients (N 2%, P 14%, and K 3%) applied to dry seed. Resource managers often report excellent success using these …
Comparative Seed Strike Of Temperate, Sub-Tropical And Native Grasses And Herb Species Under Contrasting Environments In Southern Australia,
2023
Department of Primary Industries, Australia
Comparative Seed Strike Of Temperate, Sub-Tropical And Native Grasses And Herb Species Under Contrasting Environments In Southern Australia, Zhongnan Nie, K. F. M. Reed, F. Cameron, B. Clark
IGC Proceedings (1977-2023)
The role of deep-rooted perennials in reducing recharge to mitigate dryland salinity has been recognised widely in Australia recently. Poor seedling establishment is a key limiting factor for the expression of genetic merit for some perennial pasture species. Nie et al. (2004) investigated seedling establishment, and its relationship with rainfall and temperature, of a range of perennial grass and herb species in southern Australia. This paper reports seed strike of a range of perennial pasture species in 2 contrasting environments. There was significant interaction between species and site on seed strike. Environmental conditions caused different establishment outcomes within a …
Forage Yield And Seed Bank Production With New Annual Legumes For The Dryland Conditions In The Araucanía Region In The South Of Chile,
2023
Instituto de Investigaciones Agropecuarias, Chile
Forage Yield And Seed Bank Production With New Annual Legumes For The Dryland Conditions In The Araucanía Region In The South Of Chile, O. Romero, A. Catrileo, C. Rojas, S. Loi
IGC Proceedings (1977-2023)
In dryland areas of the IX Region of Chile, with a dry period of 150 days with a negative hydrologic balance beef production is based on natural pasture, with low P soils, which produces a low DM yield. The sown pasture for this area is fescue in mixture with subclover. The subclover, has persistence problems and erratic production (Romero & Rojas, 2001). Hard seeded serradella (Ornithophus compressus), soft seeded serradella (O.sativus) and biserrula (Biserrula pelecinus) are annual forage legumes and well adapted to low P levels in the soil (Oram, 1990). The objectives of …
Grass Pellet Bioenergy In The Northeastern Usa,
2023
Cornell University
Grass Pellet Bioenergy In The Northeastern Usa, J. H. Cherney, D. J. R. Cherney
IGC Proceedings (1977-2023)
Grass pellets are a renewable energy supply that combines low technology/small-scale with local production/consumption for a cost effective energy system. There have been significant recent advances in pellet furnace technology and some pellet stove manufacturers now claim their stoves are capable of burning biomass with 5-6% ash content. Cool-season grasses have not been considered acceptable for pelleting and direct combustion in the past due to high ash content. Rain after harvest, however, has been shown to leach significant amounts of potassium and chlorine from grass (Sander, 1997). High yields are possible under lax harvest management (Cherney et al., 2003), producing …
Australian Pasture Systems: The Perennial Compromise,
2023
The University of Western Australia, Australia
Australian Pasture Systems: The Perennial Compromise, L. W. Bell, M. A. Ewing
IGC Proceedings (1977-2023)
Dryland salinity, soil acidification and weed herbicide resistance challenge traditional agricultural production systems in south Australia. The pasture component of such systems rely on annuals like Trifolium subterraneum and Medicago spp. Replacing annual with perennial pastures allows some redress of the sustainability challenges, but few well-adapted species are available (Ewing & Dolling 2003). A range of perennial species are under evaluation to supplement current options. Some of these new perennial pastures may need modified production systems that allow full expression of their productive potential, especially when integrated with annual crops including cereals, pulses and oil seeds. Integrated systems rely on …
Evaluation With Simulation Of Lucerne-Based Cropping Systems To Combat Dryland Salinity In Australia,
2023
University of Adelaide, Australia
Evaluation With Simulation Of Lucerne-Based Cropping Systems To Combat Dryland Salinity In Australia, W. Chen, M. J. Robertson, William D. Bellotti
IGC Proceedings (1977-2023)
Dryland salinity is one of the most significant forms of land degradation that farmers face in Australia. There are currently 2.5 million ha affected by dryland salinity in Australia, and this may rise to 15 million ha over the next 30 to 100 years if no action is taken. National field experiments suggest that adoption of cropping systems that integrate deep-rooted perennials, such as lucerne, are important to reduce dryland salinity. This paper reports simulation results with APSIM (The Agricultural Production Systems Simulator), that have been used to explore climate, soil and agronomic factors affecting effectiveness of lucerne-based phase and …
Response Of Guinea Grass (Panicum Maximum Jacq) To Application Of Cow Dung In South West Nigeria,
2023
Federal University of Agriculture, Nigeria
Response Of Guinea Grass (Panicum Maximum Jacq) To Application Of Cow Dung In South West Nigeria, Olufemi S. Onifade, Jimoh A. Olanite, Alaba O. Jolaosho, O. M. Arigbede, N. K. Tijani
IGC Proceedings (1977-2023)
The yield of forage species from the world's grazing land is limited by poor soil and unproductive species (Jones & Wild, 1975; Cooke, 1982). The use of manure on pasture land not only represents a low cost disposal method but also a means of recycling nutrients for plant growth and counteracting the decreasing organic matter content in most agricultural soils. In agro-pastoral production systems, the interaction between crops and livestock is important. Manures are used mainly to complement inorganic fertiliser in the production of food crops. There is a dearth of information on the response of pasture grass to application …
