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Ertrag des Kleegrases im ersten und zweiten Hauptnutzungsjahr in Abhängigkeit des Schwefeldüngers und der Düngungshöhe

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Urbatzka, Peer; Eckl, Thomas; Miederer, Wolfgang; Urgibl, Andreas and Uhl, Johannes (2019) Ertrag des Kleegrases im ersten und zweiten Hauptnutzungsjahr in Abhängigkeit des Schwefeldüngers und der Düngungshöhe. [Yield.] In: Mühlrath, Daniel; Albrecht, Joana; Finckh, Maria R.; Hamm, Ulrich; Heß, Jürgen; Knierim, Ute and Möller, Detlev (Eds.) Innovatives Denken für eine nachhaltige Land- und Ernährungswirtschaft. Beiträge zur 15. Wissenschaftstagung Ökologischer Landbau, Kassel, 5. bis 8. März 2019, Verlag Dr. Köster, Berlin.

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Summary translation

As clover-grass leys have high sulfur requirements and atmospheric sulfur input has decreased over the last few decades, there is uncertainty as to whether sulfur is a limiting nutrient in organic clover-grass cropping. Therefore, field trials were conducted at four experimental sites in biennial clover-grass leys sown in August/September. The eight treatments were fertilized in each harvest year. Specifically, magnesium sulfate (20, 40 and 60 kg S/ha in early spring), calcium sulfate (40 kg S/ha in early spring) and elemental sulfur (20 and 40 kg S/ha in autumn, 40 kg S/ha in early spring and 2 x 20 kg S/ha from the date of sowing) were applied, and compared to an unfertilized control.
Sulfur fertilization increased clover-grass crude protein yields in both harvest years, fertilization with elemental sulfur only in the second harvest year. In the first harvest year, yields were higher for treatments fertilized with sulfate than for treatments fertilized with elemental sulfur. However, there were no differences in yield between fertilizer types in the second harvest year. Additionally, fertilization of 40 kg S/ha*a is sufficient.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:grass-clover ley, sulfate, elemental sulfur, fertilizer
Subjects: Farming Systems > Farm nutrient management
Research affiliation: International Conferences > 2019: Scientific Conference German Speaking Countrie
Germany
ISBN:978-3-89574-955-17
Deposited By: Mühlrath, Daniel
ID Code:36059
Deposited On:29 Aug 2019 07:07
Last Modified:29 Aug 2019 07:07
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 15. Wissenschaftstagung Ökologischer Landbau 2019 in Kassel erschienen. This conference paper is published in the proceedings of the 15th scientific conference on organic agriculture 2019 in Kassel. D. Mühlrath, J. Albrecht, M. R. Finckh, U. Hamm, J. Heß, U. Knierim, D. Möller (2019) Innovatives Denken für eine nachhaltige Land- und Ernährungswirtschaft. Beiträge zur 15. Wissenschaftstagung Ökologischer Landbau, Kassel, 5. bis 8. März 2019, Verlag Dr. Köster, Berlin.

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