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Tolerance to weed harrowing in four spring barley varieties

Hansen, Preben Klarskov; Rasmussen, Ilse A.; Holst, Niels and Andreasen, Christian (2006) Tolerance to weed harrowing in four spring barley varieties. [Submitted]

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Summary

The aim of this study was to investigate possible interactions between a preventive and a curativ method (combination of one pre and one post-emergence weed harrowing). We estimated the damages by weed harrowing in four pure varieties of spring barley, and analysed if there were differences in resistance and tolerance to weed harrowing between the varieties. As organic growing conditions are characterised by greater differences in nutrient levels, we further examined if there was any interactions between harrowing resistance and tolerance of the varieties and two nutrient level. Tolerance to weed harrowing was measured as an immediate effect (Resistance=how much of the plant is covered with soil after weed harrowing), a short-term effect (growth rate after the harrowing) and a long-term effect (tolerance=effect on yield). Resistance was measured by two non-destructive sensor-based methods reflectance measurements and analysis of digital images and the two methods were compared.


EPrint Type:Journal paper
Keywords:weed harrowing; varieties;tolerance; resistance;digital image analysis;red edge inflexion point; sensors; spring barley; Hordeum vulgare L.
Subjects: Crop husbandry > Crop health, quality, protection
Crop husbandry > Crop combinations and interactions
Crop husbandry > Weed management
Crop husbandry > Breeding, genetics and propagation
Research affiliation: Denmark > DARCOF II (2000-2005) > VI.2 (BAR_OF) Characteristics of spring barley varieties for organic farming
Denmark > AU - Aarhus University > AU, DJF - Faculty of Agricultural Sciences
Denmark > SOAR - Research School for Organic Agriculture and Food Systems
Deposited By: Hansen, Preben Klarskov
ID Code:7872
Deposited On:03 Apr 2006
Last Modified:12 Apr 2010 07:32
Document Language:English
Status:Submitted
Refereed:Not peer-reviewed
Additional Publishing Information:will be submitted before may 2006

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