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Title: Root Plasticity Not Evident in N-Enriched Soil Volumes for Wheat ('Triticum aestivum' L.) and Barley ('Hordeum vulgare' L.) Varieties
Contributor(s): Rabbi, Sheikh M F (author); Guppy, Christopher  (author)orcid ; Flavel, Richard  (author)orcid ; Tighe, Matthew  (author); Young, Iain  (author)
Publication Date: 2017
DOI: 10.1080/00103624.2017.1395452
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Abstract: Root plasticity is a unique characteristic of root systems that may enhance the nutrient foraging capacity of plants. Here we investigated the effect of localized high nitrogen (N) concentration on plasticity of wheat and barley roots in soil. We conducted a series of experiments to maintain localized high concentration of N in soil and to evaluate any root morphological variation in the enriched N zone. Wheat and barley seedlings were grown in N responsive Red Ferrosol with an enriched subsurface N band for 12 days. Wheat and barley roots did not proliferate in N-enriched soil volumes. Rather, higher root length density (~1.6 times) was observed in low N surface soil. Shoot dry matter and shoot N uptake of banded N treatment was statistically similar between uniform and low N treatments. Results indicated the absence of plastic root response of the wheat and barley seedlings in subsurface N band.
Publication Type: Journal Article
Source of Publication: Communications in Soil Science and Plant Analysis, 48(17), p. 2002-2012
Publisher: Taylor & Francis Inc
Place of Publication: United States of America
ISSN: 0010-3624
Field of Research (FOR): 050304 Soil Chemistry (excl. Carbon Sequestration Science)
070306 Crop and Pasture Nutrition
070302 Agronomy
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article
School of Environmental and Rural Science

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