University Of Tasmania
82105 - Maize canopy development in response to increasing plant population density.pdf (238.7 kB)
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Maize canopy development in response to increasing plant population density

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conference contribution
posted on 2023-05-23, 07:11 authored by Rui, Y, Hao, J, Bedane, G, Birch, CJ, Song, Y
Improving crop production via adjustment of plant population density (PPD) largely depends on canopy development and light interception. Accordingly, it is essential to investigate the details of how canopy development responds to PPD. A field experiment was undertaken in China in 2009 to examine maize organ development across plant densities i.e. 2, 6, 12 and 20 plants m–2. Lengths of laminae and sheaths were both increased in lower phytomers due to greater extension duration and decreased in upper phytomers due to reduced extension rate in response to more interplant competition as PPD increased. However, sheath extension appeared less affected by competition stress than lamina extension. Internode length was increased due to higher extension rate at high PPD. This study indicated that leaves and internodes utilized different strategies to cope with interplant competition. In addition, the findings can be used in modelling canopy production under different plant densities.


Publication title

Proceedings of 16th Agronomy Conference 2012


I Yunusa and GJ Blair




Tasmanian Institute of Agriculture (TIA)


Australian Society of Agronomy

Place of publication

University of New England, Armidale, NSW

Event title

16th Australian Agronomy Conference

Event Venue

University of New England, Armidale, NSW

Date of Event (Start Date)


Date of Event (End Date)


Rights statement

Copyright 2012 the Regional Institute Ltd & the authors

Repository Status

  • Open

Socio-economic Objectives