Himstedt, Maike; Fricke, Thomas and Wachendorf, Michael (2007) Entwicklung einer bildanalytischen Methode zur Abschätzung des Leguminosenanteils in Futterbaugemengen. [Image analysis as a tool to evaluate characteristics of Clover/Grass Mixtures.] Poster at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.
A pot experiment in a greenhouse was conducted to follow the question how to esti-mate dominance of legumes in legume/grass swards by image analysis. Pure swards and binary legume/grass mixtures of red clover, white clover, lucerne and perennial ryegrass were sown in two week intervals and harvested together 35, 49 or 63 days after sowing to have different old swards. Digital photos of all variants were taken one day before harvesting. Sward composition was detected by fractionating biomass in grass, legumes and unsown species as reference.
Eight images of the oldest swards were selected for determining an optimal image analysis procedure with Optimas®. This image analysis procedure was used for all variants of all ages. The estimated dominances of legumes were compared to the references. Using image analysis for estimating the dominance of legumes we could detect first good results. Red and white clover both pure and mixtures show a closer relationship with the reference than lucerne and grass. Legumes identification in pure grass swards with image analysis can be caused by weeds with rounded leaves (Stel-laria media) and visible ground. The dominance of lucerne determined by image analysis was lower then the measured dry matter yield (%). The younger the swards the more inexactly are the calculations because the visible ground increases. Next intended steps are verifying a relationship for swards of different ages and checking further procedures of image analysis.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Poster|
|Keywords:||Bildanalyse, Grünland, Pflanzenbau, Feldfutterbau, Leguminosen|
|Subjects:||Crop husbandry > Crop combinations and interactions|
|Research affiliation:|| Germany > University of Kassel > Department of Grassland Science and Renewable Plant Resources|
International Conferences > 2007: Scientific Conference on Organic Agriculture > 1 Plant and Soil > 1.1 Crop production and soil tillage
|Deposited By:||Himstedt, Dipl.Biol. Maike|
|Deposited On:||07 May 2007|
|Last Modified:||12 Apr 2010 07:34|
|Refereed:||Peer-reviewed and accepted|
|Additional Publishing Information:||Die endgültige Version des Beitrags ist veröffentlicht in: |
S. Zikeli, W. Claupein, S. Dabbert, B. Kaufmann, T. Müller und A. Valle Zárate, Hrsg. (2007)
Zwischen Tradition und Globalisierung – 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Deutschland, 20.-23. März 2007, http://orgprints.org/10742/
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