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Full-Text Articles in Weed Science
Species Preference Influences On Cattle Grazing Behaviour, G P. Cosgrove, C B. Anderson, R H. Fletcher
Species Preference Influences On Cattle Grazing Behaviour, G P. Cosgrove, C B. Anderson, R H. Fletcher
IGC Proceedings (1997-2023)
Lotus corniculatus offers specific nutritional benefits to animals, but exploiting these advantages in grazing systems depends on the proportion of lotus in the feed offered and the animals' preference, hence desire to select for it. To determine preference for lotus, heifers were offered free-choice in contrasting, spatially separated but adjacent monocultures of ryegrass-lotus or red clover-lotus. Following a one-week period to adjust to the species offered and their arrangement, 10 young heifers were observed at 10-minute intervals during daylight hours, and the species they were on and whether or not they were grazing was recorded. This procedure was conducted in …
Assessment Of Grazing Procedures In The Evaluation Of Plant Breeding Material, D Real, I L. Gordon, J Hodgson
Assessment Of Grazing Procedures In The Evaluation Of Plant Breeding Material, D Real, I L. Gordon, J Hodgson
IGC Proceedings (1997-2023)
Four stocking densities (2, 3, 5 and 9 sheep/18 m2 for one hour) and two times of grazing (morning or evening) were imposed on a spaced plant nursery of nine red clover (Trifolium pratense L.) populations of varying growth habit, in order to optimize measurement of sheep grazing preference. Plant height, spread and leafiness were measured before and after each of three grazings. Sheep preference was viewed multivariately, using combined measurements of these plant characteristics. MANOVA revealed that the effect of stocking density was significant (P-0.05), but that of time of grazing was not. The plant, population and overall …
Increased Longevity Of Red Clover Through Selection For Persistence And Disease Resistance, R R. Smith
Increased Longevity Of Red Clover Through Selection For Persistence And Disease Resistance, R R. Smith
IGC Proceedings (1997-2023)
Red clover (Trifolium pratense L.), an excellent perennial forage legume, has been considered for many years to be a short-lived, two to three years, forage. Selection for resistance to foliar and root rot diseases and for longevity of stand over the past four decades has improved the persistence of the currently available cultivars. The present studies were conducted to evaluate the progress from selection for longevity and disease resistance. Selection for stand longevity and improved disease resistance has reliably extended the production of red clover into the third and fourth year. Selection for healthy plants in 3- or …
Development Of Red Clover With High Levels Of Resistance To Root-Knot Nematodes, K H. Quesenberry, R A. Dunn, D E. Moon
Development Of Red Clover With High Levels Of Resistance To Root-Knot Nematodes, K H. Quesenberry, R A. Dunn, D E. Moon
IGC Proceedings (1997-2023)
Red clover (Trifolium pratense L.), is grown in many areas of the world, but production in subtropical regions may be limited by susceptibility to root-knot nematodes (Meloidogyne spp.) (RKN). Selection for early vigor in RKN infested soils resulted in moderate RKN tolerance in ‘Cherokee’. However, improved RKN resistance in red clover was needed. Seven additional cycles of greenhouse selection using Cherokee as a base population developed a population (FLMR7) with high RKN resistance. When FLMR7 was infested with M. arenaria, M. hapla, M. incognita, or M. javanica, numbers of galls and egg masses …
Trifolium Species Germplasm From Western North America, K H. Qusenberry, N L. Taylor
Trifolium Species Germplasm From Western North America, K H. Qusenberry, N L. Taylor
IGC Proceedings (1997-2023)
The genus Trifolium, which consists of about 230 species of annual and perennial legumes, has been divided into eight taxonomic sections. Approximately 50 species are native to western North American inter-mountain regions and the states of California, Oregon, and Washington. Prior to this research, about 30 of the Trifolium species from western North America were not represented in the U.S. National Plant Germplasm System (NPGS). Three germplasm collection expeditions in 1994 and 1995 collected about 140 accessions encompassing at least 44 species, including at least 25 species not previously available in the NPGS. Of these, nine were listed as …
Using Recurrent Phenotypical Selection To Improve Drought Tolerance Of Red Clover, M. Sahin, S. Reid, E. Sahin, S. Ates, S. Elias, David B. Hannaway
Using Recurrent Phenotypical Selection To Improve Drought Tolerance Of Red Clover, M. Sahin, S. Reid, E. Sahin, S. Ates, S. Elias, David B. Hannaway
IGC Proceedings (1997-2023)
Red clover is one of the most important forage legumes in the world. It is utilized extensively in European and North American farming systems. Approximately, 4 million hectares of red clover are grown globally each year for forage production, soil improvement, and as a pollen and nectar source for pollinators (Riday, 2010). In North America, red clover is widely used in temperate regions for pasture, hay, and silage in combination with grasses for soil improvement and as a pollen and nectar source for bumblebees (Bombus). In the northwest, it is also grown for seed production (Anderson et al., 2016) with …
Isoflavones In Legumes As Functional Forages And Feeds In Ruminant Grazing Systems, B. E. Davis, Michael D. Flythe, T. A. Hamilton, D. G. Ely, L. H. Anderson, J. R. Weinert-Nelson
Isoflavones In Legumes As Functional Forages And Feeds In Ruminant Grazing Systems, B. E. Davis, Michael D. Flythe, T. A. Hamilton, D. G. Ely, L. H. Anderson, J. R. Weinert-Nelson
IGC Proceedings (1997-2023)
Legumes are often utilized in livestock grazing systems to improve diet quality, diversity, and consequently animal performance. In addition to their nutritional utility, legumes contain phytoestrogenic isoflavones that have selective antimicrobial activity in the rumen and once absorbed can cause arterial vasodilation. These added bioactive functions of isoflavones suggest that legumes could be strategically utilized in grazing systems as functional forages to improve ruminant performance and health. The objective of this presentation will be to discuss past and current research on the application of isoflavones via legumes as an antimicrobial for growth promotion and as a mitigation strategy for fescue …
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 (1997-2023)
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 …