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Effects of different row distances and seed densities on yield and quality of blue lupins (L. angustifolius) in organic farming

Böhm, Herwart and Aulrich, Karen (2011) Effects of different row distances and seed densities on yield and quality of blue lupins (L. angustifolius) in organic farming. In: Naganowska, P.; Kachlicki, P. and Wolko, B. (Eds.) Lupin crops - an opportunity for today, a promise for the future. Proceedings of the 13th International Lupin Conference, pp. 144-148.

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Blue lupins have become more important in animal feeding due to increasing organic animal husbandry. The high protein content of blue lupins shows the best protein quality of the home-grown grain legumes combined with low starch content. The feed quality of blue lupins can be analysed very quickly and cost-effi ciently with NIRS. Weed infestation in pure stands of blue lupin is often a problem. Mixed cropping systems are a good alternative for weed suppression, but the yield percentage of blue lupins in mixed cultivation is low.
Weed infestation can be reduced by hoeing. For this, blue lupins were cultivated in wider row distances (25.0 cm, 37.5 cm) with the possibility of hoeing, and compared with the cultivation to 12.5 cm row distance (only harrowing). Field experiments were conducted in the years 2006 to 2008 in combination with two different cultivars [Boruta (determined type), Bora (branched type)] and two seed densities (normal: 100%, reduced: 75% of the seed rate).
The results show a signifi cant effect on grain yield for all tested factors, but also an interaction between year and cultivar, and year and seed rate. Yields of the row distance 12.5 cm and 25.0 cm were on the same level, with 2.39 and 2.47 t ha-1 DM,; but yield of the row distance 37.5 cm was signifi cantly lower (2.19 t ha-1). The protein content was not affected by row distance, but yield of protein was the lowest in the variant with 37.5 cm row distance.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Lupinus angustifolius, Organic Farming, weed management, yield, protein content, quality
Subjects: Crop husbandry > Production systems > Cereals, pulses and oilseeds
Crop husbandry > Crop health, quality, protection
Crop husbandry > Weed management
Research affiliation: Germany > Federal Research Institute for Rural Areas, Forestry and Fisheries - VTI > Institute of Organic Farming - OEL
Deposited By: Böhm, Dr. Herwart
ID Code:27898
Deposited On:11 Dec 2014 14:55
Last Modified:11 Dec 2014 14:55
Document Language:English
Refereed:Peer-reviewed and accepted

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