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Plant root development as a measure of soil health


Pandey, S and Brown, PH and McHenry, MT, Plant root development as a measure of soil health, Acta Horticulturae, 17-22 August 2014, Brisbane, Australia, pp. 41-45. ISSN 0567-7572 (2016) [Refereed Conference Paper]

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Copyright 2016 International Society for Horticultural Science

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Healthy soil is of primary importance for sustainable vegetable production. Soil biology drives many of the soil processes that are critical to crop productivity, including deleterious effects associated with pests and diseases. While soil health is a much-studied field, most research has focused on soil biota and soil physical factors with little attention on the interaction between crops and the soil biology. Plant roots are the first sites of interaction between the plant system and soil biology, and their position at this interface potentially provides a direct measure of soil health. We investigate the root system development in Capsicum (Capsicum annuum L.), a model plant due to its vulnerability to soil born pathogens, under management practices that aim to improve the soil health. Field trials involving the addition of different organic matter amendments revealed higher microbial activity than unamended controls, yet organic matter additions resulted in less 'vigorous' root systems. Treatments that induced longer root systems produced higher crop biomass and yield. Data from pot trials examining soil C:N ratios suggest that microbial mediated nutrient dynamics partially explain this response and have also shown that the pattern of root development can provide insight into the interactions between microorganisms, soil nutrient supply and plant development. Root system analysis can contribute to a better understanding of plant-microbe-soil interactions, aiding in the development of practices to better manage soil health and improve sustainability of horticultural production systems.

Item Details

Item Type:Refereed Conference Paper
Keywords:root length, C:N ratio, soil respiration, organic matter, root branching, lateral roots, Capsicum (bell pepper)
Research Division:Environmental Sciences
Research Group:Environmental management
Research Field:Environmental management
Objective Division:Environmental Management
Objective Group:Terrestrial systems and management
Objective Field:Assessment and management of terrestrial ecosystems
UTAS Author:McHenry, MT (Dr Melinda McHenry)
ID Code:115211
Year Published:2016
Deposited By:Geography and Spatial Science
Deposited On:2017-03-09
Last Modified:2018-04-04

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