|
|
|
| Registros recuperados: 359 | |
|
| |
|
|
| Häring, D.A.; Suter, D.; Lüscher, A.. |
| Depending on the concentration in which they are fed, condensed tannins (CT) can have various beneficial or detrimental effects on ruminants. In organic farming the anthelmintic effects of CT are of special interest. In an outdoor experiment, the sea-sonal dynamics of the CT concentration of the harvestable biomass was investigated as a function of the biomass allocation to leaves and stems in Onobrychis viciifolia, Lotus corniculatus and Cichorium intybus in the course of a vegetation period in Zu-rich, Switzerland. Such knowledge is indispensable for a practical application of tan-niferous plants in farming systems. In line with our expectations, CT concentrations were higher in leaves than in stems and the leaf fraction of the harvestable biomass... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Health and welfare; Feeding and growth. |
| Ano: 2007 |
URL: http://orgprints.org/9277/1/9277_H%C3%A4ring_Vortrag.pdf |
| |
|
| |
|
|
| Søegaard, K.; Mortensen, T.B.; Eriksen, J.. |
| Species-rich swards have received increasing interest due to their focus on ecosystem services, animal welfare and product quality. However, in high-yielding swards the proportion of herbs is often limited and there is little knowledge of their management. Seed mixture composition, cutting frequency, fertilization and grazing/cutting strategies were examined over 4 years in 3 experiments to quantify their effects on herbage yield and botanical composition. Inclusion of herbs in the sward gave similar or higher annual yields but swards established with 100% herbs depended on the presence of a driver species. The effects of management differed between species. Herb content in the sward was significantly related to the proportion of herbs in the seed... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops. |
| Ano: 2013 |
URL: http://orgprints.org/24755/6/24755.pdf |
| |
|
|
| Ohm, M.; Paulsen, H.M.; Eichler-Löbermann, B.; Rahmann, G.. |
| The essential nature of Phosphorus (P) in plant growth and the finite amount of P resources have result in the question: what kind of management in farming systems can lead to P sufficiency in organic farming? The release of acid and alkaline phosphatases of plant and microbes promote the plant availability of soil P. The presented results show a significant higher enzyme activity at permanent grassland (PG) than at arable land with annual crops at an organic farm in Northern Germany. Therefore livestock systems with PG for grazing ruminants seem to have high potential to improve on-farm P-cycles via feed and manure flows even to annual cropland. These systems can profit from the nutrient transfer from PG to arable land through the use of manures. Enhance... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Farm nutrient management. |
| Ano: 2013 |
URL: http://orgprints.org/24568/1/24568.pdf |
| |
|
| |
|
| |
|
| |
|
|
| Schumann, Caroline; Müller-Lindenlauf, Maria; Gayer, Christoph; Stolzenburg, Kerstin; Wurth, Wilhelm. |
| Dieses Forschungsvorhaben hat drei Schwerpunkte. Erstens wird die Attraktivität von Mais (Zea mays L.), angebaut im Gemenge mit Stangenbohnen (Phaseolus vulgaris L.), für verschiedene Artengruppen, z.B. Laufkäfer (Carabidae LATREILLE), untersucht. Zweitens wird die Futterqualität von Mais-Bohnen-Silagen für Milchkühe getestet. Drittens werden weitere Gemengepartner für den Mais geprüft. Erste Ergebnisse werden in 2019 erwartet. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Dairy cattle; Biodiversity and ecosystem services. |
| Ano: 2019 |
URL: http://orgprints.org/36173/1/Beitrag_246_final_a.pdf |
| |
|
| |
|
| |
|
| |
|
|
| Vinther, F.P.. |
| Significant amounts of plant biomass and fixed N are incorporated into soil as roots, nodules and root exudates during the growth of grass-clover, which consequently is exposed to soil microbial degradation when the field is ploughed. This has major implications for our understanding of the potential contributions of legumes in the N economics and losses in grass-clover cropping systems. We have studied the effects of grass-clover pasture age and cutting frequency (simulated grazing) on the development of the above ground as well as the below ground plant biomass, with emphasis on below-harvest contribution to the total N2 fixation. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Pasture and forage crops. |
| Ano: 2004 |
URL: http://orgprints.org/3368/1/3368.pdf |
| |
|
|
| Pirhofer-Walzl, K.; Eriksen, J.; Rasmussen, J.; Søegaard, K.; Høgh-Jensen, H.; Rasmussen, J.. |
| Aims: Increase of plant diversity has been suggested to enhance grassland productivity and resource use efficiency. Most studies on agricultural grasslands have focused on functional diversity of mixtures comprising legumes and non-legumes, but there is little knowledge of plant nutrient acquisition from deep- and shallow-rooted grassland plant species. To investigate whether deep-rooted (chicory: Cichorium intybus L.; Lucerne: Medicago sativa L.) and shallow-rooted (perennial ryegrass: Lolium perenne L.; white clover: Trifolium repens L.) grassland plant species differ in herbage yield and depth dependent soil N-access, we investigated in the field if 1) a mixture comprising shallow- and deep-rooted grassland plant species has greater herbage yields than... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2012 |
URL: http://orgprints.org/20614/4/20614.pdf |
| |
|
|
| Eekeren, Nick J.M.; Bos, Merijn M.; Wit, J. de; Keidel, H.; Bloem, J.. |
| For the purpose of feeding value, drought resistance and nitrogen utilization, other grasses (e.g. Festuca arundinacea and Dactylis glomerata) than the currently widely used perennial rye grass (Lolium perenne) are introduced in dairy farming, either as a monoculture or in a mixture. To study the effect of these grasses on yield and soil chemical and biological quality, the three species were sown in a field experiment in monoculture and in two mixtures.Within two growing seasons, the grass species tested under high soil fertility conditions did not show significant effects on most of the tested soil biological parameters. Only for the mixture of L. perenne and D. glomerata a higher soil NO3− and mineral N content were most probably related to a higher... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops; Crop combinations and interactions. |
| Ano: 2010 |
|
| |
|
|
| Höjer, Annika; Adler, Steffen; Martinsson, Kjell; Jensen, Søren K.; Steinshamn, Håvard; Thuen, Erling; Gustavsson, A.-M.. |
| Two feeding experiments were performed to study the effects of silage botanical composition, regrowth interval and α-tocopherol supplementation on the fatty acid (FA) composition and α-tocopherol, β-carotene and retinol concentrations of milk. In experiment 1, 24 Swedish Red dairy cows were fed two- or three-cut red clover-grass silages (R2 and R3, respectively), or two-cut birdsfoot trefoil-grass silage (B2). In experiment 2, 16 Norwegian Red dairy cows were fed short-term ley silage with red clover (S3) or long-term ley silage with white clover (L3) in combination with supplementation of RRR-α-tocopheryl acetate (1,600 mg/day). The FA proportions in the milk and the recoveries of C18:2n-6 and C18:3n-3 were higher on the red clover diets R2 and S3 than on... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; "Organics" in general; Pasture and forage crops. |
| Ano: 2012 |
|
| |
|
|
| Adler, Steffen; Dahl, A.V.; Vae, A.H.; Thuen, E.; Garmo, T.; Krogh-Jensen, S.; Hansen-Møller, J.; Steinshamn, Håvard. |
| Milk samples from sixteen Norwegian Red dairy cows grazing mixed swards of either grass-red clover (GR) or mixed swards of sown and unsown species of grass, clover and other herbs (GCH) were collected during four periods. Both pastures were organically managed. Pasture botanical composition had no effect on milk fat, protein or vitamin concentration and only minor effects on fatty acid composition. Milk from GR had higher concentrations of the phytoestrogens equol, genistein and biochanin A than the milk from GCH. Concentrations of equol in milk from GR were higher than concentrations reported from experiments with red clover silage. The oxidative stability of the milk lipids was not affected by pasture type. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Pasture and forage crops; Feeding and growth. |
| Ano: 2010 |
URL: http://orgprints.org/17493/1/147_Adler_AH.pdf |
| |
|
|
| Steinshamn, Håvard. |
| The growth potential of grass-clover leys as influenced by cattle slurry application and clover content was studied in field experiments during three growing seasons at four locations. A grassland growth model was used to quantify growth potential and to separate the influence of weather variables from factors related to the plant stand. Application of cattle slurry increased the initial relative growth rate (R-s), on average from 0.21 to 0.23 g g(-1) day(-1) of the spring growth. In regrowth the effect of cattle slurry was less pronounced. The effect of cattle slurry declined with increasing R-s of the unfertilized treatment and rose with increasing rate of ammonium N applied by the slurry. The positive response to cattle slurry application on R-s was... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops; Farm nutrient management; Composting and manuring. |
| Ano: 2001 |
URL: http://orgprints.org/6009/1/cattle_slurry_growth_rate_acta_scand_steinshamn_2001.pdf |
| |
|
|
| GAUJOUR, E.; AMIAUD, B.; FIORELLI, J.-L.; MIGNOLET, C.; COQUIL, X.. |
| The aim of this work was to identify the impact of farming practices on permanent grassland vegetation during the conversion from conventional to organic farming. We considered functional and species diversities in order to compare the different grassland categories based on the farming practices used over a period of six years - five years before conversion and one year after. We identified three categories of grasslands: those generally cut twice a year, those intensely grazed, and those that were used under diversified practices. We showed that grasslands characterised by cutting and low fertilization level have the highest species richness compared to the other two categories (23.2, 16.9 and 17 species, respectively), and the lowest pastoral index... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops; Biodiversity and ecosystem services. |
| Ano: 2009 |
URL: http://orgprints.org/15487/1/32%2DGaujour.pdf |
| |
|
|
| Vinther, F.P.. |
| Nitrogen (N) accumulating in stubble, stolons and roots is an important component in N balances in perennial ryegrass-white clover swards, and the effects of cutting frequency on the biomass of above- and below-harvest height were studied during two consecutive years. Total dry matter (DM) and total N production, and N2 fixation, were measured at two cutting frequencies imposed in the summers of two years either by cutting infrequently at monthly intervals to simulate mowing or by frequent cutting at weekly intervals to simulate grazing. Total DM production harvested was in the range 3000 - 7000 kg DM ha-1 with lower DM production associated with the frequent cutting treatment, and it was significantly affected by the different weather conditions in the... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Pasture and forage crops; Farm nutrient management. |
| Ano: 2006 |
URL: http://orgprints.org/10066/1/10066.pdf |
| |
| Registros recuperados: 359 | |
|
|
|
