Fricke, Thomas and Wachendorf, Michael (2007) Abschätzung von Bestandeseigenschaften in Leguminosengras-Gemengen mit nichtdestruktiven Methoden. [Prediction of Crop Properties in Legume/Grass Mixtures by non-destructive methods.] Poster at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.
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Summary in the original language of the document
To describe spatial heterogeneity of crop properties, non-destructive methods can be helpful in capturing whole field data sets. This paper shows examples of different sensor methods that have been evaluated to measure biomass and legume content in legume-grass mixtures. Biomass has been estimated using vegetation indices (NDVI, SR, EVI and REIP) calculated from spectral reflectance measurements in greenhouse experiments. The index REIP has been used to identify species composition as well. Furthermore, biomass values can be derived from ultra sonic measurements of sward heights. To quantify legume contents in short term leys, which is important for forage quality and nitrogen flows, image analysis tools have been used in different experi-ments with good results. These examples indicate a hopeful perspective to estimate biomass and species composition. However, the structural and functional complexity of legume-grass mixtures requires adapted methods to specific crop characteristics like e.g. predefinition of legume species.
EPrint Type: | Conference paper, poster, etc. |
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Type of presentation: | Poster |
Keywords: | Grünland, Pflanzenbau, Nährstoffmanagement, Sensoren |
Subjects: | Crop husbandry > Production systems > Pasture and forage crops Crop husbandry > Production systems > Cereals, pulses and oilseeds 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: | Fricke, Dipl. Ing. Thomas |
ID Code: | 9537 |
Deposited On: | 14 May 2007 |
Last Modified: | 12 Apr 2010 07:34 |
Document Language: | German/Deutsch |
Status: | Published |
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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