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Futterqualität, Vorfruchtleistung und Nitratauswaschung von über Winter beweideten Kleegrasbeständen

Loges, Dr Ralf; Westphal, Dr Derk and Taube, Prof. Dr. Friedhelm (2009) Futterqualität, Vorfruchtleistung und Nitratauswaschung von über Winter beweideten Kleegrasbeständen. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

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Summary

In comparison to harvesting, grazing is less cost intensive. For economical reasons an
extended duration of grazing period is recommended. Grazing during winter can
cause pasture damages, which is of minor relevance for older grass clover grown on
arable land, which will be ploughed in the following spring. Against this background
yield and forage quality of 3 different legume species, i.e. white clover, red clover and
alfalfa, grown in binary mixtures with two grass species, perennial ryegrass and tall
fescue, respectively, were examined before grazing the third growth in autumn or
winter. Nitrate leaching losses during winter and yield of the following spring wheat
were recorded.
Yield and forage quality of the total sward was not significantly influenced by grass
species while the interaction of legume species and grazing date had a high impact on
yield and quality of the swards. Before grazing in October, swards with white clover
showed lower yields and through lower legume contents also lower crude protein
concentrations compared to swards with alfalfa or red clover. Losses of leave material
led to losses of crude protein concentration in swards with alfalfa or red clover as well
as high losses of energy content in swards with alfalfa, which at the latest grazing date
were significantly lower than in sward with white clover. Mulching the last growth and
autumn grazing led to higher nitrate losses than late winter grazing. After ploughing,
no effect of clover grass management on spring wheat yields was observed. Grazing
in January led to higher grain crude protein contents in spring wheat than autumn
gazing or cutting of the last growth for silage.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:grass/clover, winter grazing, forage quality, pre crop value, nitrate leaching Kleegras, Winterbeweidung, Futterqualität, Vorfruchtwert, N-Auswaschung
Subjects: Crop husbandry > Production systems > Pasture and forage crops
Crop husbandry > Production systems > Cereals, pulses and oilseeds
Crop husbandry
Research affiliation: International Conferences > 2009: Scientific Conference on Organic Agriculture > Pflanze und Boden > Pflanzenbau
Germany > Universität Kiel > Department of Crop Production and Plant Breeding > Grassland and Forage Production/Organic Farming
International Conferences > 2009: Scientific Conference on Organic Agriculture > Pflanze und Boden > Grünland
Related Links:http://www.wissenschaftstagung.de/, http://www.verlag-koester.de/buch.php?id=645&start=0&fb_id=37
Deposited By: Loges, Dr. Ralf
ID Code:14572
Deposited On:09 Apr 2009
Last Modified:12 Apr 2010 07:38
Document Language:German - Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 10. Wissenschaftagung erschienen:
Mayer, J.; Alföldi, T.; Leiber, F.; Dubois, D.; Fried, P.; Heckendorn, F.; Hillmann, E.; Klocke, P.; Lüscher, A.; Riedel, S.; Stolze, M.; Strasser, F.; van der Heijden, M. and Willer, H., (Hrsg.) (2009) Werte – Wege – Wirkungen: Biolandbau im Spannungsfeld zwischen Ernährungssicherung, Markt und Klimawandel. Beiträge zur 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.
Band 1: Boden, Pflanzenbau, Agrartechnik, Umwelt- und Naturschutz, Biolandbau international, Wissensmanagement
Band 2: Tierhaltung, Agrarpolitik und Betriebswirtschaft, Märkte und Lebensmittel.
Verlag Dr. Köster, Berlin.
Der Tagungsband kann beim Verlag Dr. Köster bezogen werden; siehe http://www.verlag-koester.de/buch.php?id=645&start=0&fb_id=37

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