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Assessing root penetration ability and resource capture from deeper soil layers

Citation

Wade, LJ and Cruz, RT and Siopongco, J and Moroni, S and Samson, BK and Acuna, T, Assessing root penetration ability and resource capture from deeper soil layers, Methodologies for root drought studies in rice, International Rice Research Institute, HE Shashidhar, A Henry and B Hardy (ed), Los Banos (Philippines), pp. 34-39. ISBN 978-971-22-0290-2 (2012) [Research Book Chapter]


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Copyright 2012 International Rice Research Institute (IRRI). Licenced under Creative Commons Attribution Attribution-NonCommercial-ShareAlike 3.0 License (Unported)(CC BY 3.0) http://creativecommons.org/licenses/by/3.0/

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Abstract

Rice crops commonly encounter zones of restricted root access, which can greatly reduce uptake of resources from deeper soil layers. As a result, yield can decrease with greater vulnerability to fluctuating weather conditions, especially under rainfed systems (Samson eta al 2002). Root access can be restricted by hardpan formation during cultivation, smearing during puddling, or sudden changes in soil texture with depth. These zones of higher soil strength and increased impedance to root elongation are not uniform across the field, so repeatable screens involving the placement of a paraffin wax/petroleum jelly layer in a soil column have been sued to identify promising lines (Yu et al 1995, Ray et al 1996, Babu et al 2001, Clark et al 2000, 2002). Field validation is still essential (Samson et al 2002).

Item Details

Item Type:Research Book Chapter
Research Division:Agricultural and Veterinary Sciences
Research Group:Crop and Pasture Production
Research Field:Agronomy
Objective Division:Plant Production and Plant Primary Products
Objective Group:Summer Grains and Oilseeds
Objective Field:Rice
Author:Acuna, T (Associate Professor Tina Acuna)
ID Code:78797
Year Published:2012
Deposited By:Agricultural Science
Deposited On:2012-07-27
Last Modified:2016-09-27
Downloads:172 View Download Statistics

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