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| van Eekeren, Nick; Fehér, L.; Smeding, Frans; Prins, Udo; Jansonius, PieterJans. |
| This article describes three experiments on the control of broad-leaved dock. Experiment 1: Dock seeds were ensiled in grass silages of different dry matter percentages; 23, 34 and 60% respectively. All silages showed a decline of seed vitality in time. Grass clover with dock seeds should be ensiled at a low dry matter percentage or remain in the silage bin for a longer period than 8 weeks. Experiment 2: In a potassium fertilisation trial on grass clover the development of dock was followed. After two years of potassium fertilisation, the number of dock and the root mass was not significant different between the fertilised and the unfertilised plots. It is concluded that potassium fertilisation at a low potassium status does not positively influence the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Weed management. |
| Ano: 2006 |
URL: http://orgprints.org/8622/1/1783.pdf |
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| de Vries, Franciska T; Hofland, Ellis; van Eekeren, Nick; Brussaard, Lijbert; Bloem, Jaap. |
| It is frequently hypothesised that high soil fungal/bacterial ratios are indicative for more sustainable agricultural systems.Increased F/B ratios have been reported in extensively managed grasslands.To determine the shifts in fungal/bacterial biomass ratio as in fluenced by grassland management and to find relations with nitrogen leaching potential,we sampled a two-year-old field experiment at an organic experimental farm in the eastern part of The Netherlands.The effect of crop (grass and grass-clover),N application rate (0, 40, 80,120 kg N/ha 1 )and manure type (no manure,farm yard manure and slurry)on the F / B ratio within three growing seasons was tested, as well as relations with soil and crop characteristics,nitrate leaching and partial N balance.... |
| Tipo: Journal paper |
Palavras-chave: Soil biology. |
| Ano: 2006 |
URL: http://orgprints.org/9382/1/De_Vries_et_al._2006.pdf |
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| de Wit, Jan; van Eekeren, Nick; Wagenaar, Jan-Paul; Smeding, Frans. |
| In semi-natural grasslands, plant diversity has shown to correlate with increased primary production and reduced weed invasion. If such positive effects also apply to low input agricultural grasslands, the resource-use efficiency could be improved. To investigate whether other grassland species and diverse grassland mixtures could be more productive, a grassland on a shallow sandy soil in the south of the Netherlands was sown in April 2009 with seven non-leguminous grassland mixtures. Though some sown species vanished quickly, diverse mixtures proved less susceptible for invading species three years after sowing (p<0.05). Yields in 2010 and 2011 were 11% higher for mixtures with two functional groups of grassland species compared with mixtures with... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Crop combinations and interactions; Biodiversity and ecosystem services. |
| Ano: 2014 |
URL: http://orgprints.org/23959/1/23959%20dewit%20divers%20grassland%20OWC14_MM.pdf |
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| Iepema, Goitste; van Eekeren, Nick; van Dongen, Marian. |
| In the Netherlands organic and conventional dairy farmers are taking an increasing interest in grass and red clover mixtures for ley pastures (cutting only). A constraint to the adoption of such mixtures is the persistency of the red clover (Trifolium pratense L.) varieties presently used in the Netherlands; Rotra, Barfiola, Violetta and Merviot. The latter being the most persistent under practical circumstances. Testing of red clover varieties in Switzerland showed a high degree of persistency of the so-called ‘mattenklee’ varieties such as Astur and Pica (Suter et al., 2004). We compared eight red clover varieties including 2 ‘mattenklee’ varieties in mixtures with perennial ryegrass (Lolium perenne L.) and white clover (Trifolium repens L.), and a... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops. |
| Ano: 2006 |
URL: http://orgprints.org/8683/1/1782.pdf |
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| Govaerts, Wim; van Eekeren, Nick. |
| Eine Prognose der Produktionskosten für das Jahr 2008 ergibt durchschnittlich 80,27 je 100 Liter Milch, umgerechnet auf 7 % Fett und Eiweiß, während die Prognose des gezahlten Milchpreises bei den heutigen Absprachen möglicherweise den Durchschnittswert von 68,80 je 100 Liter Milch, umgerechnet auf 7 % Fett und Eiweiß, erreichen könnte. Im Fazit können wir die Aussage vertreten, dass die Produktionskosten für biologisch produzierte Ziegenmilch weit über dem Milcherzeugerpreis liegen und dass diese Schere sich in Anbetracht der Entwicklungen im Hinblick auf Milchpreis-Steigerungen und Kostenbeherrschung in der jüngsten Vergangenheit erst ganz geringfügig schließt. |
| Tipo: Report |
Palavras-chave: Sheep and goats. |
| Ano: 2008 |
URL: http://orgprints.org/14999/1/2088.pdf |
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| van Eekeren, Nick. |
| Grazing is important for the welfare of goats. This is an essential part of the business and also for the distinctive biological goat rearing. Unfortunately, grazing goats in a number of bottlenecks such as: the risk of intestinal worm infestation, lack of space around the house, recording and utilization of fresh grass, labor and production in grazing groups. In recent years in the study BIOGEIT has been much attention for this bottlenecks. |
| Tipo: Other |
Palavras-chave: Farming Systems; Animal husbandry; Environmental aspects. |
| Ano: 2011 |
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