Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Publication Year
- Publication
- Publication Type
Articles 1 - 30 of 76
Full-Text Articles in Life Sciences
Relationships Between Growth And Carbon Isotope Discrimination For Some Pasture Species, J Virgona
Relationships Between Growth And Carbon Isotope Discrimination For Some Pasture Species, J Virgona
IGC Proceedings (1993-2023)
Carbon isotope discrimination (A) by plants can be directly related to plant water-use efficiency (W, total plant dry matter, OM, per water transpired) and used in selection to achieve greater W. As \V (and A) is a complex characteristic, there maybe inherent relationships between it and plant productivity. A range of pasture cultivars (of temperate grasses and legumes) were grown in pots (lo c. 50 days) and \V, A and total dry mailer measured. Among cultivars the relationship between W and A was negative and significant as was the relationship between A and total OM accumulation. A further experiment showed …
Variation In The Response Of Pasture Plants To Carbon Dioxide, B D. Campbell, W A. Laing, P.C D. Newton
Variation In The Response Of Pasture Plants To Carbon Dioxide, B D. Campbell, W A. Laing, P.C D. Newton
IGC Proceedings (1993-2023)
The percentage increases in growth resulting from a doubling of atmospheric CO2 concentration were measured for 37 common pasture plants under strictly controlled conditions of temperature, nutrient supply and irradiance. A wide range of variation in potential response lo CO2 was detected in the day/night temperature range 12n°c to 28/ 23°C. C4 species responded litlle to elevated CO2 The mean ± standard deviation of the distribution of c3 species responses ranged from l±21% at 1m•c to 90±40% at 28/23°C. These responses varied with the stage of plant development. The response by Lolium perenne cv. Grasslands Nui was of intermediate size …
Comparison Of Bite Weight And Bite Dimensions Of Sheep And Goats Grazing A Range Of Grasses And Clovers, Y Gong, J Hodgson, M G. Lambert, A.C P. Chu, I L. Gordon
Comparison Of Bite Weight And Bite Dimensions Of Sheep And Goats Grazing A Range Of Grasses And Clovers, Y Gong, J Hodgson, M G. Lambert, A.C P. Chu, I L. Gordon
IGC Proceedings (1993-2023)
Response patterns in bite weight and bite dimensions of sheep and goats were evaluated using 3 grasses and 3 clovers sampled at 2 stages of maturity offered as prepared turves to animals confined in metabolism crates. Average bite weight across 12 sward types (6 forages x 2- stages) was similar for sheep and goats, but goats had greater bile weight per unit LW0•75 tlian sheep, Despite being shorter, the much denser clover swards resulted in larger bite weight than did grass swards. The taller reproductive swards enabled animals to harvest greater bite weights than did vegetative swards. Sheep obtained heavier …
Factors Required To Sustain Pastoral Farming Systems And Forage Supply In Winter Cold Zones, H T. Kunelius, D A. Kim, H Hirota, T Zhu
Factors Required To Sustain Pastoral Farming Systems And Forage Supply In Winter Cold Zones, H T. Kunelius, D A. Kim, H Hirota, T Zhu
IGC Proceedings (1993-2023)
Forage grasses and legumes are a main component of livestock diets in winter cold zones, There are over 130 million ha of grassland in this zone and there is a large, undeveloped land base in fringe areas suitable for forage production. Regulations on land ownership and use hamper efficient development of forage-based farming systems in some regions. The short growing season Ii mils the grassland farming in the winter cold zones. The winter season is long and cold temperatures, freezing and thawing, and diseases' exert severe stress on overwintering forage plants. The development of persistent cultivars is essential for sustained …
Prediction Of Plant Mortality Under Grazing- A Conceptual Approach, J J. Mott, G K. Mckeon, K A. Day
Prediction Of Plant Mortality Under Grazing- A Conceptual Approach, J J. Mott, G K. Mckeon, K A. Day
IGC Proceedings (1993-2023)
Based on the concept of biological thresholds, there is growing acceptance 0£ the importance o£ episodic events in the determination of rangeland condition trend. The variable rainfall occurring within Australian rangelands means that overstocking during droughts is a major cause of these Australian rangeland vegetation complexes exceeding these thresholds. Recently plant production models and simplistic estimates of the relationship between animal utilisation and plant mortality became available. Accurate estimates will be developed only with the incorporation of a sound mechanistic understanding of the relationship between utilisation of forage and plant mortality for different conditions of species and soils. Detailed studies …
Searching For New Germplasm For The Year 2000 And Beyond, Rainer Schultze-Kraft, Warren M. Williams, John M. Keoghan
Searching For New Germplasm For The Year 2000 And Beyond, Rainer Schultze-Kraft, Warren M. Williams, John M. Keoghan
IGC Proceedings (1993-2023)
The likely germplasm needs for the next decades are discussed with major emphasis on tropical pastures, although many of the considerations apply also to temperate grasslands. The largest, and internationally most relevant, tropical-germplasm collections are held by CSIRO, CIAT and ILCA. Gerznplasm of <600 grass and <1500 legume species is available (with 6000-7000 and 26000-28000 accessions, respectively), representing 100-120 grass and 150-200 legume genera. Temperate germplasm collections are more numerous and hold larger numbers of accessions; they are, however, even more narrowly focused on very few genera (mainly four legume and eight grass genera). The numbers of species represented in the germplasm collections are only a fraction of considerably higher figures suggested in the literature as wild species with forage potential. Further collections to increase this fraction and to safeguard germplasm from genetic erosion and loss of biodiversity are warranted. International co-operation is suggested. Future germplasm needs are seen, in the tropics, mainly for low-input production systems on marginal, degraded lands and for agropastoral systems, and, in the temperate zone, for sustainable grasslands systems. Because of their dualpurpose characteristics legumes are expected to play a key role. It is suggested that the present collections might not contain a sufficiently broad base of germplasm with the required characteristics for the aforementioned production systems. Collection gaps can be identified only through thorough analyses of important genera and regions, based on a solid body of information that still needs to be assembled. A series of research topics is suggested to assist in future collection strategies, germplasm management and evaluation, and to create the basis for future breeding projects. However, expensive and long-term breeding programmes with tropical and many temperate forages are not encouraged for the near future unless the respective species and its natural variability are well enough known. The same applies to genetic manipulation via biotechnology. Implications arising from molecular biology are that new techniques are now available to improve understanding of genetic diversity and taxonomic relationships, and that the potential genetic resource now spans animals, micro-organisms and plants other than the target species. This wider genepool is also endangered and its conservation will rely on in situ preservation of the diverse ecosystems of which it is composed. The need of international support, co-operation and co-ordination regarding germplasm collection, related research and communication is emphasised. The creation of an JBPGR-sponsored, permanent, international working group on forages is suggested.
Multilocational Testing Of Grasses And Legumes In The Humid Tropics Of South America, G Keller-Grein, M C. Amezquita, G Lema, L H. Franco
Multilocational Testing Of Grasses And Legumes In The Humid Tropics Of South America, G Keller-Grein, M C. Amezquita, G Lema, L H. Franco
IGC Proceedings (1993-2023)
Adaptability of 5 grass and 13 legume accessions tested in 34 regional agronomic trials throughout the South American humid tropics was assessed by conducting a multilocational analysis on seasonal dry matter (DM) yield at 12 weeks regrowth. Among legumes, Stylosamhes guianensis CIAT 184 and 136, Desmodium ovaifolum CIAT 350, Zornia latifolla CIAT 728 and Centrosema macrocarpum CIAT 5065 were the highest yielding accessions in both rainfall periods and showed high adaptability to environmental conditions. Centrosema brasllianan CIAT 5234, C. pubescence CIAT 438 and Desmodiun heterophyifom CIAT 349 had low productivity and low adaptability. For grasses, Andropogon gayanus CIAT 621 outyielded …
Botanical Composition, Improvement Intervention And Cattle Weight Gain Of Natural Pastures Of Western Ethiopia, L Gizachew, A Tadesse, A Hassen
Botanical Composition, Improvement Intervention And Cattle Weight Gain Of Natural Pastures Of Western Ethiopia, L Gizachew, A Tadesse, A Hassen
IGC Proceedings (1993-2023)
The dominant indigenous grass and legume species in the highland (above 2000 m) and mid-altitude (1600-2000 m) parts of western Ethiopia were determined. Grasslands in the high altitude contain a higher proportion of a nutritious grass and legume species than grasslands in the mid altitude. Fertiliser, manuring and legume oversowing improved dry matter yield and live-weight gains of grazing animals. Incorporating forage legumes into natural pastures by oversowing is the best pasture improvement strategy.
Constraints And Opportunities For Turkish Grasslands Use Patterns And The Expected Development Of Forage Crops, With The South-Eastern Anatolian Project (Gap) In Turkey, T Tukel, T Saglamtimur, H Gulcan, V Tansi, A E. Anlarsal
Constraints And Opportunities For Turkish Grasslands Use Patterns And The Expected Development Of Forage Crops, With The South-Eastern Anatolian Project (Gap) In Turkey, T Tukel, T Saglamtimur, H Gulcan, V Tansi, A E. Anlarsal
IGC Proceedings (1993-2023)
Turkey has 78 million ha land area. Of this, about 28% covers permanent grasslands, 36% arable land, and 30% forest and woodlands. Mainly, ii has a typical mediterranean climate but with regional differences. In general, Turkish grasslands are continuously being overutilised. There are 3 utilisation systems called sedentary, transhumance and nomadic. Each not only has its constraints but also some rational use under special situations. Intensive feeding programmes with high yielding and quality forage crops are also being encouraged. Recently, a national project, the south-eastern Anatolian Project (GAP in Turkish), is proceeding in the form of a big regional development. …
Recent Advances In Pasture Research And Development In Zambia With Special Reference To The Agro-Ecological Regions, Jarsolav Kulich
Recent Advances In Pasture Research And Development In Zambia With Special Reference To The Agro-Ecological Regions, Jarsolav Kulich
IGC Proceedings (1993-2023)
Zambia is a large country (7S2 972 km"Z) with a low population density (about 1 Olkm2), 3 distinct seasons and 3 a8f(!-ecological regions, Each region has a specific temperature and rainfall regime, The country has 2.6 million head of cattle of various breeds concentrated in regions of low (<700 mm) to moderate (8()()..1000 mm) annual rainfall with high to moderate temperatures, Calving and turn off rates are low in the traditional sector, Pasture research started 10 years ago. Work reported here was concentrated in each of the agro-ecologlcal regions. The results suggested that production from local breeds could be improved by adopting and integrating pasture farming.
The Value Of Adapted, Annual Ryegrasses For Subtropical Dairy Production, K F. Lowe, T M. Bowdler, G K. Reason, R J. Moss
The Value Of Adapted, Annual Ryegrasses For Subtropical Dairy Production, K F. Lowe, T M. Bowdler, G K. Reason, R J. Moss
IGC Proceedings (1993-2023)
Cutting and grazing experiments were conducted in a subtropical environment to determine whether a relationship existed between differences measured in ryegrass cultivars from cutting experiments and milk production differences under grazing. Differences in dry mauer (OM) production under cutting between the standard annual ryegrass for the subtropics (Grasslands Tama) and a cultivar selected for superior performance under subtropical conditions (Midmar) averaged 31 %, differences in feed on offer under grazing averaged 21 %, while milk production differences averaged 10% in a 2-year study. The results indicate that increases in OM yield measured in cutting experiments will be consistent wlth differences …
Comparison Of Yield, Forage Quality And Persistence Of 11 Grasses Grown With Irrigation In A Semi-Arid Climate, D E. Glover, G A. Kielly, R H. Cohen, P G. Jefferson
Comparison Of Yield, Forage Quality And Persistence Of 11 Grasses Grown With Irrigation In A Semi-Arid Climate, D E. Glover, G A. Kielly, R H. Cohen, P G. Jefferson
IGC Proceedings (1993-2023)
Nutritive quality of many grass species used for forage in the Northern Great Plains of Canada and the United States is not well documented, especially at different maturity stages. This study compared agronomic and forage quality characteristics of eleven grasses common to Saskatchewan. Botanical separation and quality analysis was undertaken at three growth stages. Meadow Brome (Bromus riparius), Russian Wildrye (Psathyrostachys juceus) and Altai Wildrye (Elymus angustus) were shown to have high leaf to stem ratios which corresponded with high protein levels. Separations showed persistence of Reed Canarygrass (Phalaris arudinaceus), Creeping Foxtail …
Forage Production Of Irrigated Lecerne- Grass Mixtures Grazed By Sheep, M L. Enrique, D P. Minon
Forage Production Of Irrigated Lecerne- Grass Mixtures Grazed By Sheep, M L. Enrique, D P. Minon
IGC Proceedings (1993-2023)
The forage production and botanical changes of lucerne cultivars in pure stands and in grass mixtures were studied in a split-plot experiment with irrigation and sheep grazing. The non dormant lucerne cultivars (Medicago sativa) CUF 101, Monarca SPINTA, P 30 and common were the main plots, and tall fescue (Festuca arundinacea), canarygrass (Phalaris aquatica), cocksfoot (Dactylis glomerata), tall wheatgrass (Thynopirum ponticum) and prairie grass (Bromus catharticus) were the subplots. The experiment was grazed 3, 6 and 4 times during 3 years. Total yield was similar for all lucerne …
Formation And Development Of The Center For Grassland Studies At The University Of Nebraska, M A. Massengale
Formation And Development Of The Center For Grassland Studies At The University Of Nebraska, M A. Massengale
IGC Proceedings (1993-2023)
The Center for Grassland Studies was formed at the University of Nebraska in 1994 to implement focused interdisciplinary research, educational, and service programs and activities that emphasize the role of grasslands as a natural resource and conservation measure and that enhance the efficiency, profitability, sustainability, and aesthetic value of grasslands, wetlands, and turf. Although the Center is still in a developmental stage, it appears to be accomplishing those objectives.
Tropical Forage Seed Production In Southeast Asia: Current Status And Prospects, C Phaikaew, L Guodao, A Abdullah, M Tuhulele, E Magboo, B Bouahom, W Stur
Tropical Forage Seed Production In Southeast Asia: Current Status And Prospects, C Phaikaew, L Guodao, A Abdullah, M Tuhulele, E Magboo, B Bouahom, W Stur
IGC Proceedings (1993-2023)
The demand for forage seed in southeast Asia has increased in recent years. More than 1,200 tons of seed were produced in Thailand in 1995 with smaller quantities of seed having been produced in China, Lao PDR, Malaysia, Philippines and Indonesia. Large quantities have been produced of Brachiaria ruziziensis, Stylosanthes hamata, Stylosanthes guianensis and Panicum maximum. There are good prospects to increase forage seed production and to develop trade between countries in the southeast Asian region. There is a need to increase seed production of widely adapted species, and expand production of forages for other purposes such as turf …
Differentiation Of Festuca Pratensis Varieties And Festulolium Hybrids By Electrophoresis, H Hahn, W Schoberlein, K Forster
Differentiation Of Festuca Pratensis Varieties And Festulolium Hybrids By Electrophoresis, H Hahn, W Schoberlein, K Forster
IGC Proceedings (1993-2023)
In the present study seed proteins and isozymes of varieties and lines of Festuca pratensis and Festulolium were investigated with the aim of finding methods for the discrimination of meadow fescue varieties and the identification of Festulolium hybrids. The banding patterns of ultrathin-layer isoelectric focusing (UTLIEF) of bulked seed samples allowed a clear distinction of Festulolium hybrids of different crossing combinations from each other and in most cases also from their parental species. Despite the outcrossing character, identification of some hybrids and crossing parents was also achieved using protein patterns of single seeds. By means of isozyme electrophoresis of Festuca …
Short-Term Effects Of Grazing And Rest Treatments On The Seed Banks Of Two Contrasting Sites In The Semiarid Pampas, Argentina, M O. Aguilera, M M. Marchi, O Terenti
Short-Term Effects Of Grazing And Rest Treatments On The Seed Banks Of Two Contrasting Sites In The Semiarid Pampas, Argentina, M O. Aguilera, M M. Marchi, O Terenti
IGC Proceedings (1993-2023)
The germinable seed bank was characterized in relation to season, grazing, and site type at southcentral San Luis, Argentina. Vegetation is typical of the semiarid western extreme of the Pampas grasslands. Our objective was to evaluate the effect of grazing and rest during the growing season on seed banks for two contrasting sites. Seed banks were sampled twice, in spring and fall. In each date, soil cores were obtained in sanddune and flat sites, for pastures grazed or that remained ungrazed during the growing season. Soil was spread in trays under suitable conditions for germination. Evaluations were done on total …
Effect Of Clipping Frequency Of Some Fodder Grasses In The Semi-Arid Region Of Tamil Nadu, India, K Manoharan, K Paliwal
Effect Of Clipping Frequency Of Some Fodder Grasses In The Semi-Arid Region Of Tamil Nadu, India, K Manoharan, K Paliwal
IGC Proceedings (1993-2023)
Clipping frequency and water stress play a major role in the biomass production of grasses. Bajra - Napier BN2 and CO1 showed maximum above ground biomass under monthly clipping without water stress. The above ground biomass of Bajra-Napier BN2, Panicum maximum Hamil and Guinea grass were not affected under weekly and fortnightly clipping with water stress. Water stress affected the monthly clipped and unclipped plant above ground biomass but the below ground biomass increased in all the fodder grasses except Brachiaria mutica.
Forage And Protein Production Per Hectare Using Different Species For Interseeding, J A. Josifovich, J O. Scheneiter
Forage And Protein Production Per Hectare Using Different Species For Interseeding, J A. Josifovich, J O. Scheneiter
IGC Proceedings (1993-2023)
The objective was to test the efficiency of different species for interseeding in relation to forage and crude protein production. Avalability of forage and crude protein were evaluated every spring, after 60 days rest. The design was a split-split plot: in an Argiudol soil legumes were the whole plot, grasses subplot and fertilizer subsubplot. Dry matter accumulation did not show any difference in relation to treatments in three of four springs. Crude protein showed differences in three of four springs, being interseeding better than control. Interseeding of old pastures resulted in a good practice to keep the balance legume-grass, as …
Pasture Life Lengthening And Beef Production Increase Through Interseeding, J A. Josifovich, J O. Scheneiter
Pasture Life Lengthening And Beef Production Increase Through Interseeding, J A. Josifovich, J O. Scheneiter
IGC Proceedings (1993-2023)
The objective of the trial was to evaluate the influence of pasture interseeding with grasses and legumes on the forage production and liveweight gains by steers. Four year pastures were interseeded with alfalfa (Medicago sativa L.), brome (Bromus unioloides HBK.), red clover (Trifolium pratense L.) and orchardgrass (Dactylis glomerata L.). There were two treatments with two replications: interseeding and control, grazed by steers. For four periods forage availability did not show differences. Legume percentage was higher in interseeding. The animal daily gains were higher in the interseeded treatment in the first two periods, but decreased with …
Species Composition And Forage Quality Of Birdsfoot Trefoil (Lotus Corniculatus L.) - Grass Mixtures, L J. Greub, D J. Undersander
Species Composition And Forage Quality Of Birdsfoot Trefoil (Lotus Corniculatus L.) - Grass Mixtures, L J. Greub, D J. Undersander
IGC Proceedings (1993-2023)
This study compares yield, species composition, and forage quality of binary mixtures of two birdsfoot trefoil cultivars (‘Witt’ and ‘Dawn’) and six cool-season forage grasses. Stands were established by no-till seeding into glyphosate killed pasture sod in May and in August. Heavy autumn dandelion (Taraxacum officinale Weber) competition reduced trefoil survival in August seedings. The proportion of trefoil in the herbage varied widely but in spring-seeded seeding year stands it was always highest with Kentucky bluegrass (maximum of 740 g kg-1, first harvest, 1994) and usually lowest (107 g kg-1 or less) with perennial ryegrass, reed canarygrass, or orchardgrass. …
Clipping Intensity Impacts On Root Mass Variation Of Cool Season Grasses, D L. Stetson, W M. Sullivan
Clipping Intensity Impacts On Root Mass Variation Of Cool Season Grasses, D L. Stetson, W M. Sullivan
IGC Proceedings (1993-2023)
Seasonal changes in grass root and mat weight density were documented under different cutting managements. Kentucky bluegrass (Poa pratensis L.) and tall fescue (Festuca arundinacea Schreb.) received one annual cut, twice yearly forage harvest, and mown turf treatments. Orchardgrass (Dactylis glomerata L.) received one annual and twice yearly cutting treatments. Soil cores were collected to a 15 cm depth and divided into 7.5 cm increments. Roots and mat were recovered, washed, dried and weighed. Differences in years, seasons, species, treatments, and soil depth significantly influenced total root weight density and fine root density. With all species and …
Nutrient Uptake And Growth Stimulation Of Grasses And Legumes By Rhizosphere Microorganisms, G Hoflich
Nutrient Uptake And Growth Stimulation Of Grasses And Legumes By Rhizosphere Microorganisms, G Hoflich
IGC Proceedings (1993-2023)
Selected Rhizobium bacteria and mycorrhiza fungi by single and combinated inoculation stimulate the growth and the nutrient uptake (nitrogen, phosphorus, potassium) of alfalfa and alfalfa-grass more than that of red clover and red clover grass. The extra yield was higher on loamy sand than on sandy loam. The proportion of legumes should be 60 to 66 % as a requirement to get positive inoculation effects and an effective N2-fixation in legumegrass- mixtures.
North American Grass Species In Reclamation Of Coal-Mining Areas In Poland, W Majtkowski
North American Grass Species In Reclamation Of Coal-Mining Areas In Poland, W Majtkowski
IGC Proceedings (1993-2023)
Suitability of perennial grass species as a main decorative element was evaluated during reclamation of a coal-dump in Bierun near Katowice. Materials for the above testing were species selected from grass collection of Botanical Garden of PBAI in Bydgoszcz. The most promising species were: Carex grayi (sedge), Andropogon gerardi, A. scoparius and Spartina michauxiana (grasses from North America flora), Elymus racemosus, Koeleria cristata, Melica altissima, Miscanthus sacchariflorus (European or Asian origin). Addition of bio-gel positively affected plant development, while no significant differences were observed between different levels of fertilizers.
History Of Endophytic Toxicosis And Novel Variety Solutions, J. H. Bouton
History Of Endophytic Toxicosis And Novel Variety Solutions, J. H. Bouton
IGC Proceedings (1993-2023)
Associations of Epichloe endophytes with tall fescue [Lolium arundinaceum (Schreb). Darbush.] and perennial ryegrass (Lolium perenne L.) form the basis for the known science and ecology of mutualistic, fungal endophytes, and especially their impact on livestock. In the USA, millions of acres are endophyte infected today due mainly to planting ‘Kentucky 31’ to reduce soil erosion. Health problems emerged later among animals grazing the grass. These toxicity symptoms were listed under the general term ‘Fescue Toxicosis’. Research demonstrated that ergot alkaloids produced by the mutualism were mainly responsible. Developing endophyte-free versions of major varieties reduced host grass persistence …
Development Of Seed Production Of Important Grass And Legume Species In Poland In Relation To The European Market, Barbara Golińska, Piotr Goliński
Development Of Seed Production Of Important Grass And Legume Species In Poland In Relation To The European Market, Barbara Golińska, Piotr Goliński
IGC Proceedings (1993-2023)
An analysis was carried out on the status of seed production of most important grass and legume species in Poland in terms of the area of seed crops and their seed yield on the background of the European market. Particular attention in the analysis was paid to the dominant species in the reproductive area of varieties of forage and turfgrasses and small-seeded legumes in Poland and in Europe, i.e. Lolium perenne L., Lolium multiflorum Lam., Festuca rubra L. and Trifolium pratense L. For analysis the ESCAA and Polish Main Inspectorate of Plant Health and Seed Inspection data from 2004‒2021 were …
Differential Responses Of Yield And Shoot Traits Of Five Tropical Grasses To N And Distance To Trees In Silvopastoral Systems, L. S. Pontes, Emilio A. Laca
Differential Responses Of Yield And Shoot Traits Of Five Tropical Grasses To N And Distance To Trees In Silvopastoral Systems, L. S. Pontes, Emilio A. Laca
IGC Proceedings (1993-2023)
Light intensity and nitrogen (N) availability are important factors influencing the growth of C4 forage species. Trade-offs may occur in the adaptive responses of species to shading and N inputs, and functional shoot traits can help to explain the consequences of these responses for species performance. Our objective was to gain understanding of the mechanisms between traits of five C4 perennial grasses determining above-ground dry matter yield (DMY) when both resources, light and N, vary. Forage grasses were grown in six shading conditions (full sunlight vs. five positions between Eucalyptus dunnii rows) with two N levels (0 vs. …
Addition Of Red Clover Or Birdsfoot Trefoil In Alfalfa-Based Mixtures To Improve The Forage Energy To Protein Balance, Philippe Seguin, Gaëtan F. Tremblay, M. Thériault, X. Godin, Shabtai Bittman, D. Hunt, J. Hakl, Gilles Bélanger, M.-N. Thivierge, Annick Bertrand, A. Claessens
Addition Of Red Clover Or Birdsfoot Trefoil In Alfalfa-Based Mixtures To Improve The Forage Energy To Protein Balance, Philippe Seguin, Gaëtan F. Tremblay, M. Thériault, X. Godin, Shabtai Bittman, D. Hunt, J. Hakl, Gilles Bélanger, M.-N. Thivierge, Annick Bertrand, A. Claessens
IGC Proceedings (1993-2023)
The low ratio of sugars (S) to crude proteins (CP) in alfalfa (AL, Medicago sativa L.) leads to inefficient use of nitrogen by ruminants. The objective was to determine if adding red clover (RC, Trifolium pratense L.) or birdsfoot trefoil (BT, Lotus corniculatus L.) with or without a grass species to AL improved the forage S/CP ratio. Treatments were 100% AL (control) or AL-based mixtures with RC or BT in three proportions (75, 50, or 25% of seeded legumes) with either no grass or with timothy (Phleum pratense L.) or tall fescue (Schedonorus arundinaceus Schreb. Dumort.), resulting in …
Cool-Season Perennials And Stability In Year-Round Forage Production Systems, C. D. Teutsch
Cool-Season Perennials And Stability In Year-Round Forage Production Systems, C. D. Teutsch
IGC Proceedings (1993-2023)
Changes in long-term climate normals have resulted in warmer and wetter summers and milder winters in the humid eastern United States. This will likely impact regional forage species adaptation in the long-term and varietal adaptation in the short term. Variety evaluation has been occurring at the University of Kentucky for almost 100 years. There are several considerations for selecting forage species and varieties including regional and local adaptation, productivity, distribution of growth, palatability, nutritive value, anti-quality factors, tolerance to stress, and persistence. Two of the most important criteria are long-term productivity and persistence under grazing, both of which are currently …
Comparison Of Compositional Changes In Multi-Species Grass/Legume Mixture Experiments Across Three Nordic Countries (Iceland, Sweden And Finland) Over Two Years, Caroline Brophy, Anne-Maj Gustavsson, A. Helgadottir, Oiva Nissinen, J. Connolly
Comparison Of Compositional Changes In Multi-Species Grass/Legume Mixture Experiments Across Three Nordic Countries (Iceland, Sweden And Finland) Over Two Years, Caroline Brophy, Anne-Maj Gustavsson, A. Helgadottir, Oiva Nissinen, J. Connolly
IGC Proceedings (1993-2023)
A multi-site experiment was established at 39 sites across Europe, Australia and Canada within COST Action 852 to: (1) assess the benefits of grass/legume mixtures over monocultures, (2) test the stability of mixtures and (3) evaluate the consistency of the observed patterns over broad environmental gradients. This paper compares the results from 3 Nordic sites using the same plant species: Korpa Experimental Station in Iceland, Lapland Research Station in Finland and Piteå in Sweden to investigate if compositional changes in mixtures are consistent across the sites.