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Full-Text Articles in Physical Sciences and Mathematics
A Solution To Weed Control In Grassland Containing White Clover, E. Bardsley, T. Schulz, R. Bentley, V. Van Damme, D. Gurney, N. Blanchier, B. B. Sleugh
A Solution To Weed Control In Grassland Containing White Clover, E. Bardsley, T. Schulz, R. Bentley, V. Van Damme, D. Gurney, N. Blanchier, B. B. Sleugh
IGC Proceedings (1997-2023)
Productive grass with white clover can lead to advantages both in forage quantity and quality, economics and in meeting wider expectations detailed in recent EU and UK policy. The ability to achieve this agronomic success is currently difficult due to a lack of options for broad spectrum weed control that also allow establishment or preservation of a white clover population. The aim of this paper is to demonstrate that 3730XL, developed by Corteva Agriscience, is a solution to this critical success factor. Data is presented from 16 efficacy trials (10 from established grassland and 5 from newly sown) where white …
Soil Constraints (Ph And Aluminium) For Legume Performance In Hill Country Of Uruguay, Walter Ayala, R. E. Bermúdez
Soil Constraints (Ph And Aluminium) For Legume Performance In Hill Country Of Uruguay, Walter Ayala, R. E. Bermúdez
IGC Proceedings (1997-2023)
Pastoral areas in eastern Uruguay have soils with pH 5.5 or lower (Mas, 1978), which is frequently associated with the acid soil syndrome (Cregan, 1980). As pH drops below 5.5, aluminium (Al) concentration can increase to toxic levels. These conditions may adversely affect growth of introduced legumes. A way to overcome these constraints is by the use of tolerant species. The objective of this study was to evaluate the adaptation and productivity of different legumes under environments with restrictions in pH and Al concentrations.
Abiotic Resource Efficiency Of Grassland Production Systems In North-West Europe, M. Wachendorf, F. Taube
Abiotic Resource Efficiency Of Grassland Production Systems In North-West Europe, M. Wachendorf, F. Taube
IGC Proceedings (1997-2023)
Nitrate leaching and energy efficiency are key criteria of a resource efficient grassland production system. A four-year field experiment was conducted to evaluate the effects of N input and defoliation system on both criteria. The objective of this experiment was to develop strategies which help to facilitate future grassland production with maximum environmental friendliness.
Allocating Grazing Resources With Kansasgrazer® And Making Management Decisions In A Stocker Operation, Joseph L. Moyer, J. O. Fritz
Allocating Grazing Resources With Kansasgrazer® And Making Management Decisions In A Stocker Operation, Joseph L. Moyer, J. O. Fritz
IGC Proceedings (1997-2023)
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 …
Effects Of Grass Suppression On Legume Abundance In A Naturalised Pasture, Christian Hepp, I. Valentine, P. D. Kemp
Effects Of Grass Suppression On Legume Abundance In A Naturalised Pasture, Christian Hepp, I. Valentine, P. D. Kemp
IGC Proceedings (1997-2023)
Low abundance and poor persistence of legumes is a generalised problem in hill country pastures in New Zealand, even at adequate soil phosphorus levels (Woodfield & Caradus, 1996). Likely causes of low legume contents in swards include lack of soil moisture, high temperatures (Barker et al., 1993), frequency and intensity of defoliation (Suckling, 1975; (Lambert et al., 1982) and increased grass competition due to increasing fixed nitrogen in the soil (Lambert et al., 1982). On this later point there is anecdotal evidence that suppression of the grass component with herbicide will boost clover content, colloquially called 'chemical topping'.
Effect Of Seed Rate Of Trifolium Repens In Pasture Overdrilling, P. Goliński, S. Kozłowski, B. T. Golińska
Effect Of Seed Rate Of Trifolium Repens In Pasture Overdrilling, P. Goliński, S. Kozłowski, B. T. Golińska
IGC Proceedings (1997-2023)
In the region of Wielkopolska, unfavourable climatic conditions, particularly periodical shortage of precipitation, have contributed to a rapid degradation of pastures in dairy farms. In grass-clover mixtures Trifolium repens (Tr) is found to disappear very quickly from the sward. In consequence the DM yield and herbage quality in summer is low. One of the methods of improving of pasture sward and reducing the seasonality of forage production is overdrilling (OD). Many factors affect the success of this undertaking (Sheldrick 2000). This research investigated the response to one easily adjustable factor, that of seed rate (SR).
The Effectiveness Of Nitrogen Rates On Winter Wheat And White Clover Bi-Cropping Grown For Silage, J. Sowiński
The Effectiveness Of Nitrogen Rates On Winter Wheat And White Clover Bi-Cropping Grown For Silage, J. Sowiński
IGC Proceedings (1997-2023)
Whole-crop cereals harvested for silage cover c. 500,000 ha in Europe (Wilkins & Kirilov, 2003). Generally dry matter (DM) yield of small-grain cereals is lower than that of maize. In some investigations, DM yield (of high nutritional value) reached 15 t/ha (Balsdon et al. 1997; Clements et al. 1997). Whole-crop silage produced in a bi-cropping system offers more balanced forage compared to pure cereals and legumes. Nitrogen rates can be decreased with bi-cropping. The aim of this investigation was to compare nitrogen effectiveness using two methods of winter wheat cultivation: direct drilling into stubble and bi-cropping with …
The Influence Of Winter Wheat And White Clover Bi-Cropping System On White Clover Sward Parameters, J. Sowiński
The Influence Of Winter Wheat And White Clover Bi-Cropping System On White Clover Sward Parameters, J. Sowiński
IGC Proceedings (1997-2023)
Whole-crop silage produced in a bi-cropping system represents a low-input forage production system (Clements et al., 1997). Depressing competition of white clover (by mowing or spraying with herbicides) when winter wheat starts its growth is necessary in this system. Winter wheat also competes with white clover during crop growth. The number of growing points as well as the length and weight of stolon are the main parameters that characterise the persistence of white clover (Jorgensen & Ledgard, 1997; Marriott & Haystead 1990). The purpose of the present investigation was to study the effects of a bi-cropping system on some …
Use Of Novel Spatial Presentations Of Plant Species To Improve Legume Abundance, J. M. Sharp, M. J. Jeger, R. W. Fraser, G. R. Edwards
Use Of Novel Spatial Presentations Of Plant Species To Improve Legume Abundance, J. M. Sharp, M. J. Jeger, R. W. Fraser, G. R. Edwards
IGC Proceedings (1997-2023)
The benefits of using white clover (Trifolium repens) in pasture grazed by sheep have been widely recognised. However, clover is considered inadequate and risky as the main source of nitrogen input, since its abundance in the pasture is patchy, low (typically less than 20%) and shows great year-to-year variation. This is thought to be due to the costs of nitrogen fixation, competition with grass, the preference for clover by sheep and patchy dung and urine deposition (Schwinning & Parsons, 1996). One possible solution may be the spatial separation of clover from grass, which would remove inter-specific competition, allowing clover to …
Condensed Tannin Concentration And Herbage Accumulation Of A White Clover Bred For Increased Floral Condensed Tannin, V. T. Burggraaf, S. L. Woodward, D. R. Woodfield, E. R. Thom, G. C. Waghorn, P. D. Kemp
Condensed Tannin Concentration And Herbage Accumulation Of A White Clover Bred For Increased Floral Condensed Tannin, V. T. Burggraaf, S. L. Woodward, D. R. Woodfield, E. R. Thom, G. C. Waghorn, P. D. Kemp
IGC Proceedings (1997-2023)
White clover is a high quality feed for ruminants, however, its high protein content results in excessive urea excretion in urine and can cause bloat, reducing its potential value for animal production. The condensed tannins (CT) in some forages can reduce these problems, but plants may have poor agronomic performance. White clover produces CT in its flower heads, but herbage CT concentrations are normally too low to benefit animals. This paper reports CT concentrations and herbage accumulation over 2 years of an experimental line of white clover (HT) selected for increased flowering and floral CT concentrations.
Effects Of Simulated High-Sugar Forages On Grazing Behaviour Of Sheep, Gerald P. Cosgrove, A. J. Parsons
Effects Of Simulated High-Sugar Forages On Grazing Behaviour Of Sheep, Gerald P. Cosgrove, A. J. Parsons
IGC Proceedings (1997-2023)
Sustaining an optimum composition in mixed-species pasture and in the diet of grazing animals is constrained by many factors. Altering the concentration of water soluble carbohydrate (WSC) of one species to improve its nutritional value for animals may not deliver the benefits in the assumed manner if it also affects preference and the balance of species in the pasture. Furthermore, associated changes in other constituents (e.g. fibre, protein) make it difficult to attribute animal responses solely to the manipulated trait (e.g. Lee et al. 2000). The objective of this study was to simulate changes in the concentration of water soluble …
High Floral Tannin White Clover Reduces Rumen Ammonia Concentrations In Dairy Cows, V. T. Burggraaf, G. C. Waghorn, S. L. Woodward, D. R. Woodfield, E. R. Thom, P. D. Kemp
High Floral Tannin White Clover Reduces Rumen Ammonia Concentrations In Dairy Cows, V. T. Burggraaf, G. C. Waghorn, S. L. Woodward, D. R. Woodfield, E. R. Thom, P. D. Kemp
IGC Proceedings (1997-2023)
White clover produces high quality forage for ruminant production, but it results in high rumen ammonia concentrations, indicating extensive protein degradation. The excess ammonia is absorbed through the rumen and excreted as urea in urine, at a cost to the animal and the environment. Condensed tannins (CT) contained in some forages reduce proteolysis in the rumen, which can lead to increased amino acid absorption and therefore improved animal performance. White clover produces CT in its flower heads, but concentrations are normally too low to benefit animals. This paper reports on comparisons of rumen ammonia concentrations in dairy cows grazing HT …
Analysis Of Genetic Diversity In White Clover (Trifolium Repens) Breeding Populations Using Agro-Morphological And Rapd Markers, T. R. Sharma, S. Singh, R. Rathour, S. K. Sharma
Analysis Of Genetic Diversity In White Clover (Trifolium Repens) Breeding Populations Using Agro-Morphological And Rapd Markers, T. R. Sharma, S. Singh, R. Rathour, S. K. Sharma
IGC Proceedings (1997-2023)
White clover is an important forage legume for temperate regions, but very little is known about the genetic organisation of its breeding populations. The low amount of variability in the Indian collections of white clover for genetic improvement warrants the introduction of new germplasm and collecting local ecotypes for characterisation, utilisation and conservation. Several molecular techniques have been used for germplasm characterisation, variety identification, marker development and identification, molecular diagnostics, phylogenetic studies and diversity analysis. Because of its simplicity, rapidity and reliability, the RAPD technique has been used extensively for diversity analysis. The present study aims at characterising white clover …
Quantitative Trait Locus Analysis Of Morphogenetic And Developmental Traits In An Ssr And Aflp-Based Genetic Map Of White Clover (Trifolium Repens L.), M. T. Abberton, N. O. I. Cogan, K. F. Smith, G. Kearney, A. H. Marshall, A. Williams, T. P. T. Michaelson-Yeates, C. Bowen, E. S. Jones, A. C. Vecchies, J. W. Forster
Quantitative Trait Locus Analysis Of Morphogenetic And Developmental Traits In An Ssr And Aflp-Based Genetic Map Of White Clover (Trifolium Repens L.), M. T. Abberton, N. O. I. Cogan, K. F. Smith, G. Kearney, A. H. Marshall, A. Williams, T. P. T. Michaelson-Yeates, C. Bowen, E. S. Jones, A. C. Vecchies, J. W. Forster
IGC Proceedings (1997-2023)
Molecular marker-assisted plant breeding is a key target for the temperate legume pasture crop white clover (Trifolium repens L.). The first genetic linkage map of white clover has been constructed using self-fertile mutants to derive an intercross based fourth and fifth generation inbred parental genotypes (F2[I.4R x I.5J]). The framework map was constructed using simple sequence repeat (TRSSR) and amplified fragment length polymorphism (AFLP) markers. Eighteen linkage groups (LG) corresponding to the anticipated 16 chromosomes of white clover (2n = 4x = 32), with a total map length of 825 cM were derived from a total of …
Quantifying The Variation In Protein Content In White Clover (Trifolium Repens L.), A. H. Marshall, E. Sizer, A. Kingston-Smith, A. Williams, M. T. Abberton
Quantifying The Variation In Protein Content In White Clover (Trifolium Repens L.), A. H. Marshall, E. Sizer, A. Kingston-Smith, A. Williams, M. T. Abberton
IGC Proceedings (1997-2023)
White clover (Trifolium repens L.) is the main legume in temperate pastures. It has relatively low levels of water-soluble carbohydrate but produces forage of high quality with a high crude protein (CP) content and dry-matter digestibility (Beever, 1993). Some studies have suggested that the forage quality of white clover can be problematic because its high CP content may contribute to inefficient use of nitrogen in the rumen and exacerbate diffuse pollution via excreta (Waghorn & Caradus, 1994). The development of white clover germplasm with lower CP content would potentially benefit forage production and grassland management. A study was carried …
New Approaches To Clover Breeding, M. T. Abberton, T. A. Williams, T. P. T. Michaelson-Yeates, A. H. Marshall, C. Jones, E. Sizer-Coverdale, R. P. Collins
New Approaches To Clover Breeding, M. T. Abberton, T. A. Williams, T. P. T. Michaelson-Yeates, A. H. Marshall, C. Jones, E. Sizer-Coverdale, R. P. Collins
IGC Proceedings (1997-2023)
White clover (Trifolium repens L.) and red clover (T. pratense) are the major forage legumes of temperate pastures. Breeding efforts have focused on overcoming the constraints to productivity and reliability in this species and thereby optimising their contribution to mixed swards. In recent years there has been an increased emphasis on livestock production and the efficient utilisation of forage material in the rumen. In this paper we report on a shift in the aims of forage legume breeding at IGER, building on a strong agronomic platform but giving greater consideration to the environmental footprint of our varieties …
Analyses Of Genetic Change In Grass-Clover Based Systems Over Time, A. Ghesquiere, K. Mehdikhanlov, M. Malengier, J. De Riek
Analyses Of Genetic Change In Grass-Clover Based Systems Over Time, A. Ghesquiere, K. Mehdikhanlov, M. Malengier, J. De Riek
IGC Proceedings (1997-2023)
Since the use of nitrogen fertilisers is reduced, swards based on grass-clover mixtures regain importance in grassland production. Management of these swards is more complicated than the management of pure grass swards. The population structure will develop in response to abiotic and biotic stresses. In this study we will test the genetic change in the clover components of grass-clover mixtures.
LxrTm White Clover: Development Of Transgenic White Clover (Trifolium Repens) With Delayed Leaf Senescence, Y. H. Lin, J. Chalmers, E. Ludlow, C. Pallaghy, G. E. Schrauf, Pablo Rush, A. M. García, A. Mouradov, G. C. Spangenberg
LxrTm White Clover: Development Of Transgenic White Clover (Trifolium Repens) With Delayed Leaf Senescence, Y. H. Lin, J. Chalmers, E. Ludlow, C. Pallaghy, G. E. Schrauf, Pablo Rush, A. M. García, A. Mouradov, G. C. Spangenberg
IGC Proceedings (1997-2023)
Leaf senescence is a type of programmed cell death characterized by loss of chlorophyll, lipids, protein, and RNA. Cytokinins are a class of plant hormones that play roles in many aspects of plant growth and development, including leaf senescence, apical dominance, the formation and activity of shoot meristems, nutrient mobilization, seed germination, and pathogen responses. They also appear to mediate a number of light- regulated processes, such as de-etiolation and chloroplast differentiation. It is known that the concentrations of endogenous cytokinins decline in plant tissues as senescence progresses. This observation provides the opportunity to manipulate the senescence program in transgenic …
Production And Analysis Of Transgenic White Clover (Trifolium Repens) Plants Over-Expressing Organic Acid Biosynthetic Genes, C. M. Labandera, Stephen N. Panter, A. Winkworth, J. Simmonds, A. Mouradov, U. John, P. W. Sale, G. C. Spangenberg
Production And Analysis Of Transgenic White Clover (Trifolium Repens) Plants Over-Expressing Organic Acid Biosynthetic Genes, C. M. Labandera, Stephen N. Panter, A. Winkworth, J. Simmonds, A. Mouradov, U. John, P. W. Sale, G. C. Spangenberg
IGC Proceedings (1997-2023)
Aluminium (Al) toxicity is a major environmental limitation for plant production in acid soils, which represent more than one third of the world’s agricultural land. Al-induced secretion in roots of organic acids (OA), such as malate and citrate, chelates the toxic Al cation excluding it from the root. This mechanism of Al-tolerance appears also to be associated with enhanced P-use efficiency. The development of transgenic plants for enhanced synthesis and secretion of OA from roots is a promising approach to confer Al-tolerance and enhanced P-acquisition efficiency. In order to understand the association between OA biosynthesis and secretion from roots in …
Minimising Bloat Through Development Of White Clover (T. Repens) With High Levels Of Condensed Tannins, M. T. O’Donoghue, C. Spillane, E. Guiney
Minimising Bloat Through Development Of White Clover (T. Repens) With High Levels Of Condensed Tannins, M. T. O’Donoghue, C. Spillane, E. Guiney
IGC Proceedings (1997-2023)
White clover constitutes a low percentage of the overall sward content in Irish pastureland despite EU directives limiting the use of nitrogenous fertilizers. This is mainly due to the tendency of large amounts of white clover to cause bloat. Bloat is a potentially fatal build up of proteinaceous foam in the guts of ruminants. Some lesser cultivated legumes such as Lotus species contain condensed tannins (CT) that decrease the incidence of bloated animals. The project’s objective is to reduce the risk of bloat by generating white clover cultivars with high CT content. We are investigating whether expression of the ANTHOCYANIN …
Evaluation Of Genetic Diversity In White Clover (Trifolium Repens L.) Through Measurement Of Simple Sequence Repeat (Ssr) Polymorphism, J. George, E. Van Zijll De Jong, T. C. Wilkinson, M. P. Dobrowolski, N. O. I. Cogan, K. F. Smith, J. W. Forster
Evaluation Of Genetic Diversity In White Clover (Trifolium Repens L.) Through Measurement Of Simple Sequence Repeat (Ssr) Polymorphism, J. George, E. Van Zijll De Jong, T. C. Wilkinson, M. P. Dobrowolski, N. O. I. Cogan, K. F. Smith, J. W. Forster
IGC Proceedings (1997-2023)
White clover (Trifolium repens L.) is a key important temperate pasture legume. Due to the obligate outbreeding nature of white clover, individual genotypes within cultivars are highly genetically heterogeneous. Genetic diversity has been assessed within and between 16 elite cultivars derived from Europe, North and South America, New Zealand and Australia.
Molecular Breeding Of White Clover For Transgenic Resistance To Alfalfa Mosaic Virus And Natural Resistance To Clover Yellow Vein Virus, P. Chu, G. Zhao, G. C. Spangenberg
Molecular Breeding Of White Clover For Transgenic Resistance To Alfalfa Mosaic Virus And Natural Resistance To Clover Yellow Vein Virus, P. Chu, G. Zhao, G. C. Spangenberg
IGC Proceedings (1997-2023)
Trifolium repens L. (white clover) is one of the most important pastoral plants in temperate Australia. Its productivity and persistence is being reduced significantly by Alfalfa mosaic virus (AMV), Clover yellow vein virus (ClYVV) and White clover mosaic virus (WClMV). These viruses are also widespread in other legumes and are inflicting large economic losses to farmers throughout the world (Campbell, 1984). To reduce the economic impact of these viruses, white clover plants resistant to both ClYVV and AMV are being developed for future commercial release. Since introducing viral transgenes from two or more viruses into a transgenic plant has the …
Discovery, Isolation And Characterisation Of Promoters In White Clover (Trifolium Repens), C. M. Labandera, Y. H. Lin, E. Ludlow, M. Emmerling, U. John, P. W. Sale, C. Pallaghy, G. C. Spangenberg
Discovery, Isolation And Characterisation Of Promoters In White Clover (Trifolium Repens), C. M. Labandera, Y. H. Lin, E. Ludlow, M. Emmerling, U. John, P. W. Sale, C. Pallaghy, G. C. Spangenberg
IGC Proceedings (1997-2023)
The availability of a suite of promoters with a range of spatial, temporal and inducible expression patterns is of significant importance to control targeted expression of genes for molecular breeding in forage species. A range of resources and tools have been developed for promoter isolation and characterisation in white clover (Trifolium repens L.), including a comprehensive BAC library and a 15K unigene microarray.
A Proposal For An International Transcriptome Initiative For Forage And Turf: Microarray Tools For Expression Profiling In Ryegrass, Clover And Grass Endophytes, T. Webster, N. Nguyen, C. Rhodes, S. A. Felitti, R. Chapman, D. Edwards, G. C. Spangenberg
A Proposal For An International Transcriptome Initiative For Forage And Turf: Microarray Tools For Expression Profiling In Ryegrass, Clover And Grass Endophytes, T. Webster, N. Nguyen, C. Rhodes, S. A. Felitti, R. Chapman, D. Edwards, G. C. Spangenberg
IGC Proceedings (1997-2023)
Knowledge of the expression pattern of genes provides a valuable insight into gene function and role in determining the observed heritable phenotype. High–density cDNA and oligonucleotide microarrays represent powerful tools for transcriptome analysis to gain an understanding of gene expression patterns for thousands of genes. Internationally coordinated efforts in transcriptome analyses and sharing of microarray resources will benefit the advancement of our understanding of gene function in forage and turf species.
Towards A Comparative Map Of White Clover (Trifolium Repens) And Barrel Medic (Medicago Truncatula), M. Febrer, G. Jenkins, M. T. Abberton, D. Milbourne
Towards A Comparative Map Of White Clover (Trifolium Repens) And Barrel Medic (Medicago Truncatula), M. Febrer, G. Jenkins, M. T. Abberton, D. Milbourne
IGC Proceedings (1997-2023)
Grassland is of pivotal importance to the Irish agricultural industry. This dependence of grass is reflected in the large proportion of land area under grass, approx. 80% of the total land acreage in Ireland. The presence of white clover (Trifolium repens L.) in grassland significantly improves the overall nutritional value of the forage by increasing the relative amounts of nitrogen present. Genetic improvement of white clover through breeding of varieties should increase the productivity of grasslands. Advances in plant biotechnology offer the possibility of developing tools that will radically enhance our ability to breed improved plant varieties. The objective …
Clover Astra: A Web-Based Resource For Trifolium Est Analysis, G. C. Spangenberg, T. Sawbridge, E. K. Ong, C. G. Love, T. A. Erwin, E. G. Logan, D. Edwards
Clover Astra: A Web-Based Resource For Trifolium Est Analysis, G. C. Spangenberg, T. Sawbridge, E. K. Ong, C. G. Love, T. A. Erwin, E. G. Logan, D. Edwards
IGC Proceedings (1997-2023)
White clover (Trifolium repens L.) is a major temperate forage legume.
Quantitative Trait Locus Analysis Of Morphogenetic And Developmental Traits In An Ssr And Aflp-Based Genetic Map Of White Clover (Trifolium Repens L.), M. T. Abberton, N. O. I. Cogan, K. F. Smith, G. Kearney, A. H. Marshall, A. Williams, T. P. T. Michaelson-Yeates, C. Bowen, E. S. Jones, A. C. Vecchies, J. W. Forster
Quantitative Trait Locus Analysis Of Morphogenetic And Developmental Traits In An Ssr And Aflp-Based Genetic Map Of White Clover (Trifolium Repens L.), M. T. Abberton, N. O. I. Cogan, K. F. Smith, G. Kearney, A. H. Marshall, A. Williams, T. P. T. Michaelson-Yeates, C. Bowen, E. S. Jones, A. C. Vecchies, J. W. Forster
IGC Proceedings (1997-2023)
Molecular marker-assisted plant breeding is a key target for the temperate legume pasture crop white clover (Trifolium repens L.). The first genetic linkage map of white clover has been constructed using self-fertile mutants to derive an intercross based fourth and fifth generation inbred parental genotypes (F2[I.4R x I.5J]). The framework map was constructed using simple sequence repeat (TRSSR) and amplified fragment length polymorphism (AFLP) markers. Eighteen linkage groups (LG) corresponding to the anticipated 16 chromosomes of white clover (2n = 4x = 32), with a total map length of 825 cM were derived from a total of …
Caucasian Clover Is More Productive Than White Clover In Temperate Pastures, A. D. Black, D. J. Moot, R. J. Lucas
Caucasian Clover Is More Productive Than White Clover In Temperate Pastures, A. D. Black, D. J. Moot, R. J. Lucas
IGC Proceedings (1997-2023)
White clover (wc) (Trifolium repens) is present and is often the dominant legume in the >11 m ha of grassland in New Zealand (NZ). However, wc has limitations and normally contributes less than 20% of total annual pasture dry matter (DM) production. The use of a wider range of legume species is one way to increase legume percentage in wc/grass pastures. Caucasian (Cc) or Kura clover (Trifolium ambiguum) is a persistent legume which is slower to establish than wc but can increase total legume production (Cc plus volunteer wc) and hence N2 fixation and animal productivity. …
White Clover Soil Fatigue: An Establishment Problem On Large And Intensive Dairy Farms, K. Søegaard, K. Møller
White Clover Soil Fatigue: An Establishment Problem On Large And Intensive Dairy Farms, K. Søegaard, K. Møller
IGC Proceedings (1997-2023)
In recent years a new constraint, clover soil fatigue, has appeared for the establishment of white clover (Trifolium repens) in Denmark. Increasing dairy farm size has led to more intensive use of clover in crop rotation schemes in the grazing areas located at convenient distances from stables. It has become common practice to establish new clover/grass in the fields just after ploughing clover/grass swards, and soil fatigue is becoming more common. On fatigued land the clover plants emerge, then become stunted and eventually disappear within the same year. The problem tends to cover the full field area. Obviously, …