NDLI: Dynamics of plant nutrient uptake as affected by biopore-associated root growth in arable subsoil

Content Provider	SpringerLink
Author	Han, Eusun Kautz, Timo Huang, Ning Köpke, Ulrich
Copyright Year	2016
Abstract	Soil biopores facilitate root growth in arable subsoil, thus improve resource acquisition potential. We aimed at determining the dynamic relationship between soil biopores and performance of two winter crops in field condition considering different biopore size classes, root characteristics and crop growth parameters.Chicory with dominant taproot system and tall fescue with limited taproots were grown for two consecutive years as precrops. Density of soil biopores larger than 2 mm and smaller than 2 mm in diameter was measured at 45 cm of soil depth. Destructive samplings were carried out for investigation on following barley and canola roots. Shoot biomass production, nutrient uptake and final yield of the following crops were determined throughout the growth seasons.Higher shares of large or small-sized bipoores were observed after chicory (23 %) or tall fescue (20 %) precrops, respectively. On average root diameter and root dry mass of following crops were greater by 11 and 15 % after chicory than tall fescue. At anthesis chicory-barley treatment accumulated 10 % more K in comparison to tall fescue-barley treatment. P uptake of canola was greater (7 %) after tall fescue compared with chicory at the stage of fruit development.Our results suggest that the subsoil heterogenization by altered soil biopores hold relevance for plant root growth and overall crop performance. However, the effects depended on biopore size classes, root characteristics and crop species. Development of direct methods that can quantify biopore-root-shoot processes, detailed investigation on drilosphere, root phenotyping for detection of the genetic variation in response to biopore systems have to be followed in the future.
Starting Page	145
Ending Page	160
Page Count	16
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	415
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-12-19
Publisher Place	Cham
Access Restriction	Subscribed
Subject Keyword	Biopores Soil-plant relationship Deep roots Subsoil Winter crops Plant Sciences Soil Science & Conservation Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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