Effect of fertilization systems on soil microbial biomass and mineral nitrogen during canola (Brassica napus L.) development stages

Sabahi, Hossein, Veisi, Hadi, Soufizadeh, Saeid and Asilan, Kamal Sadate (2010) Effect of fertilization systems on soil microbial biomass and mineral nitrogen during canola (Brassica napus L.) development stages. Communications in Soil Science and Plant Analysis, 41 14: 1665-1673. doi:10.1080/00103624.2010.489132


Author Sabahi, Hossein
Veisi, Hadi
Soufizadeh, Saeid
Asilan, Kamal Sadate
Title Effect of fertilization systems on soil microbial biomass and mineral nitrogen during canola (Brassica napus L.) development stages
Formatted title
Effect of fertilization systems on soil microbial biomass and mineral nitrogen during canola (Brassica napus L.) development stages
Journal name Communications in Soil Science and Plant Analysis   Check publisher's open access policy
ISSN 0010-3624
Publication date 2010
Sub-type Article (original research)
DOI 10.1080/00103624.2010.489132
Volume 41
Issue 14
Start page 1665
End page 1673
Total pages 9
Place of publication Philadelphia, PA, U.S.A.
Publisher Taylor & Francis
Collection year 2011
Language eng
Abstract The dynamics of microbial biomass and mineral nitrogen (N) during two growth stages were compared in soils under different fertilization treatments. At stem elongation, the fertilizer system had more N in the mineral pools, whereas manure and integrated systems had more N in the microbial biomass, indicating shifts in N pools between the two systems. At the flowering stage, integrated (manure + fertilizer) and manure systems had more N in two pools, indicating release of plant-available N from the microbial biomass. The carbon (C)/N ratio of the microbial biomass was significantly greater in manure and integrated treatments than in fertilizer treatments. Soil mineral N was significantly positively correlated with seed yield at the stem elongation stage, whereas it was positively correlated with soil microbial biomass C at the flowering stage. Stepwise regressions revealed that seed yield was significantly associated with mineral N at stem elongation and microbial biomass N at the flowering stage. © Taylor & Francis Group, LLC.
Keyword Canola
Fertilization system
Manure
Microbial biomass
Mineral N
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Agriculture and Food Sciences
 
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Created: Sun, 15 Aug 2010, 00:06:34 EST