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Identification of deep-rooting crop species in arable subsoil by the minirhizotron technique

Han, Eusun; Havmøller, Lisa; Dresbøll, Dorte Bodin and Thorup-Kristensen, Kristian (2017) Identification of deep-rooting crop species in arable subsoil by the minirhizotron technique. In: Proceedings of the Scientific Track at the Organic World Congress 2017, 1, pp. 6-9.

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Online at: https://orgprints.org/32350/1/360a_OWC17%20science%20track%20proceedings%20in%20TR_54_Vol1_box.pdf

Summary

Our current understanding of the plant deep root system and its relevance for crop production is limited. A field trial was established in order to monitor the root growth of various deep-rooted crops down to 5 m of soil depth with the minirhizotron technique. Root intensity (RI: intersections m-1) and maximum rooting depth (m) of seven different crop species indicate varying degree of root penetration capacity among the tested crops. Overall, within one season over 89 % of RI was concentrated at 0-1.0 m of soil depth. Sugar beet (1.4 m) as an annual crop showed the most rapid root growth rate (10.6 mm day-1). On average the perennials resulted in 0.7 m of maximum rooting depth (5.6 mm day-1), which indicates their potential to establish deep root systems in coming seasons.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:deep roots, maximum rooting depth, root intensity, perennials, cropping system
Subjects: Crop husbandry
Soil
Research affiliation: Denmark > Private funders/foundations > Deep Frontier
Denmark > ICROFS - International Centre for Research in Organic Food Systems
Denmark > KU - University of Copenhagen
Deposited By: Han, Dr. Eusun
ID Code:36656
Deposited On:07 Nov 2019 09:21
Last Modified:07 Nov 2019 09:21
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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