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Yield of spring barley mixtures as a function of varietal and environmental characteristics Organic Eprints
Kiær, Lars; Skovgaard, Ib; Østergård, Hanne.
To design good variety mixtures it is important to understand the influence of varietal and environmental characteristics on mixing effect, e.g. what characteristics are more beneficial when all mixed varieties express it highly and what characteristics are more beneficial when the mixed varieties express it to varying extent. However, as it is generally impossible to manage more than a few experimental combinations in each field trial, information on general relationships and factors of importance for the successful design of variety mixtures may be overlooked. Using meta-regression (e.g. Houwelingen et al. 2002), numerous results of such trials can be combined, and the influence of varietal and environmental factors on mixing effect can be elucidated....
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Crop combinations and interactions Breeding; Genetics and propagation.
Ano: 2007 URL: http://orgprints.org/11371/1/11371.pdf
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Meta-analysis is a powerful tool to summarize variety mixture effects - exemplified by grain yield and weed suppression of spring barley Organic Eprints
Kiær, Lars; Skovgaard, Ib; Østergård, Hanne.
In a new project, we aim to increase the general understanding of the power of meta-analysis to combine existing experimental results on variety mixtures. In this way, explanatory power can be increased compared to separate analyses and overall measures and relationships may be revealed. We will thus pursue to uncover a number of critical issues, including the relative importance of various traits and trait combinations on mixing success. To demonstrate the methods of meta-analysis applicable for variety mixture data, we considered a data set consisting of grain yield and weed ground cover assessments in 16 field trials of six 3-component variety mixtures and their components (part of the Danish BAR-OF field trials). The effects of mixing were analysed...
Tipo: Conference paper, poster, etc. Palavras-chave: Environmental aspects Crop health; Quality; Protection Crop combinations and interactions Weed management Farming Systems.
Ano: 2006 URL: http://orgprints.org/9380/1/9380.pdf
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