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Soil water dynamics, root growth and water and nitrogen use efficiency of rainfed maize (Zea mays) in a semi-arid environment

Indian Agricultural Research Journals

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Title Soil water dynamics, root growth and water and nitrogen use efficiency of rainfed maize (Zea mays) in a semi-arid environment
 
Creator PRADHAN, S
CHOPRA, U K
BANDYOPADHYAY, K K
KRISHNAN, P
SINGH, R
JAIN, A K
 
Subject Maize, Nitrogen use efficiency, Root growth, Soil water, Water use efficiency
 
Description A field experiment was conducted during kharif season of 2010 and 2011 in a sandy loam soil at New Delhi to study the effect of irrigation (depending on the rainfall and nitrogen levels (0 kg N/ha, 60 kg N/ha, 120 kg N/ha and 180 kg N/ ha) on soil water dynamics, root growth, productivity, water and nitrogen use efficiency of maize (Zea mays L.) (cv HQPM 1). Sufficient and well distributed rainfall during the kharif season of 2010 did not require application of irrigation and hence only nitrogen effects were observed. However in the year 2011, lower rainfall in the early period crop growth required application of a life saving irrigatio to treatments. After that no irrigation was supplied because of adequate and well distributed rainfall. Hence in both the years, only nitrogen effects were seen but not the irrigation effects. At early growth period, poor canopy coverage in no fertilizer treatment exposed the soil for evaporation resulting in lower soil moisture storage. However at peak growth and later stages, lowest soil moisture storage was observed in the treatments receiving 180 kg N/ha followed by 120 kg N/ha, 60 kg N/ha and the 0 kg N/ha treatments, probably because of better crop and root growth and correspondingly higher uptake of water by the crop. The RLD showed significant (P
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-05-06
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/29641
 
Source The Indian Journal of Agricultural Sciences; Vol 83, No 5 (2013)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/29641/13343
 
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