Home > Papers

 
 
Effect of Poly(γ-glutamic acid) on Wheat Productivityand Soil Microbes
XU Zongqi #,WAN Chuanbao,ZHANG Dan #,FENG Xiaohai,XU Hong *
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing University of Technology, Nanjing 210009
*Correspondence author
#Submitted by
Subject:
Funding: the National Basic Research Program of China(973)(No.No. 2009CB724700), the Specialized Research Fund for the Doctoral Program of Higher Education (No.20103221120007), the National Key Technology R&D Program(No.2011BAD23B04), the Project Supported by Jiangsu Provincial Natural Science Foundation of China(No.No. BK2009363), Jiangsu Key Technology Research and Development Program(No.No. BE2009363), the Research Fund for the Doctoral Program of Higher Education of China (No.No. 20103221110006), the National Nature Science Foundation of China(No.No. 201006050), Jiangsu Technology of Agricultural Innovation Fund(No.No. CX(10)226)
Opened online:27 June 2012
Accepted by: none
Citation: XU Zongqi,WAN Chuanbao,ZHANG Dan.Effect of Poly(γ-glutamic acid) on Wheat Productivityand Soil Microbes[OL]. [27 June 2012] http://en.paper.edu.cn/en_releasepaper/content/4482952
 
 
Recently, with numerous environmental problems being caused by chemical fertilizer overuse, agricultural practices are shifting toward the development of environmentally friendly N fertilizers. In this study, pot and field experiments were simultaneously conducted to investigate the effect of poly(γ-glutamic acid) (γ-PGA) on the yield, N use efficiency, and soil microenvironment of wheat.Our study demonstrates a statistically significant increase in winter wheat, number of tillers, seed number per spike, yield, soil microbial biomass N (SMBN), and soil enzymes after γ-PGA application. The highest grain yield of 7435.69 ± 55.91 kg/ha was obtained after γ-PGA application in the field experiment, which was 7.17% higher than the urea control. The N recovery efficiency increased by 11.81%-14.00% and 11.30%-11.38% after the application of γ-PGA in pot and field experiments, respectively. More mineral nitrogen in soil was immobilized by the microbes after γ-PGA application at the early growth stage of wheat. The immobilized nitrogen was gradually released at the late growth stage. The results demonstrate that γ-PGA can be used as a fertilizer synergist.
Keywords:Poly(γ-glutamic acid); Fertilizer synergist; N use efficiency; Soil microbial biomass nitrogen; Soil enzyme
 
 
 

For this paper

  • PDF (0B)
  • ● Revision 0   
  • ● Print this paper
  • ● Recommend this paper to a friend
  • ● Add to my favorite list

    Saved Papers

    Please enter a name for this paper to be shown in your personalized Saved Papers list

Tags

Add yours

Related Papers

Statistics

PDF Downloaded 424
Bookmarked 0
Recommend 5
Comments Array
Submit your papers