\documentclass[english,german]{scrartcl}
\usepackage[latin1]{inputenc}
\usepackage{geometry}
\geometry{verbose,a4paper,tmargin=1.75cm,bmargin=2cm,lmargin=2cm,rmargin=2cm,headheight=0.8cm,headsep=0.5cm,footskip=0.5cm}
\usepackage{babel}
\usepackage{url}
\urlstyle{same}
\newcommand\email{\begingroup \urlstyle{same}\Url}\usepackage{graphicx}
\usepackage{units}
\usepackage{tabularx}
\usepackage{wasysym} % enable use of \permil instead of \textperthousand
\usepackage{marvosym}
\usepackage{arabtex}
\usepackage{hyphenat}
\usepackage{booktabs}
\usepackage{mdwlist}
\renewcommand{\thefootnote}{\relax}
\usepackage{index}
\newindex{key}{kdx}{knd}{Keywords}
\newindex{author}{idx}{ind}{Authors}
\usepackage{fancyhdr}
\pagestyle{fancy}
\renewcommand{\headrulewidth}{0pt}
\fancyfoot{}
\usepackage{ifpdf}
\ifpdf
%\usepackage[activate]{pdfcprot}
%\usepackage[owner=Tapioka, print=true, copy=true, edit=false, annotate=false,set]{pdfcrypt}
%encryption: not supported any more (since pdftex 1.10)
\usepackage[pdftex]{thumbpdf}
\usepackage[pdftex]{hyperref}
\hypersetup{pdftitle={The Study of Soil Microbial Parameters on the Rhizosphere of Securigera Securidaca and Trigonella Foenum"=graecum},pdfauthor={Elham Azizi, Sara Bakhshaei, Mansoureh-Sadat Sharifi-Noori, Atena Mirblock},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Biomass. , dehydrogenase, microbial respiration, rhizosphere},pdfpagemode=None,colorlinks=true}
\else
\usepackage{ae}
\usepackage{textcomp}
\fi
\begin{document}
\ifpdf
\parbox[b]{2.5cm}{\resizebox*{2.5cm}{!}{\includegraphics{dtt2016.jpg}}}
\else
\parbox[b]{2.5cm}{\resizebox*{2.5cm}{!}{\includegraphics{dtt2016.eps}}}
\fi
\hfill
\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
\hspace{0.1cm}
\begin{center}
\Large{\textbf{The Study of Soil Microbial Parameters on the Rhizosphere of Securigera Securidaca and Trigonella Foenum"=graecum\footnote{\textbf{Contact Address:} Elham Azizi, Payame Noor University, Dept. of Agronomy, Mashhad, Iran, \mbox{e-mail}: \email{azizi40760@gmail.com}}\\[0.8ex]}}
\normalsize{\textsc{Elham Azizi$^{1}$, Sara Bakhshaei$^{2}$, Mansoureh-Sadat Sharifi-Noori$^{3}$, Atena Mirblock$^{4}$}}
\end{center}
\begin{itemize*}
\item[]{\small{\textit{$^{1}$Payame Noor University, Dept. of Agronomy, Iran}}}
\item[]{\small{\textit{$^{2}$Ferdowsi University of Mashhad, Dept. of Agronomy, Iran}}}
\item[]{\small{\textit{$^{3}$Payame Noor University, Dept. of Agronomy, Iran}}}
\item[]{\small{\textit{$^{4}$Payame Noor University, Department of Agronomy, }}}
\end{itemize*}
\index[author]{Azizi, Elham}
\index[author]{Bakhshaei, Sara}
\index[author]{Sharifi-Noori, Mansoureh-Sadat}
\index[author]{Mirblock, Atena}
\begin{center}
\vspace{1.1cm}
\textbf{Abstract}
\begin{abstract}
\normalsize{
Microbial processes are related to soil fertility. Microbial population in the rhizosphere is responsible for nutrient cycling adjustment and it plays the important role in providing nutrients for plants and thus it affect the growth and development, production and yield of crops and medicinal plants in agroecosystems. Plant root is one of the factors that can affect the microbial activity, so that the root exudates change microbial population dynamics and activity. In order to investigate the microbial parameters in the rhizosphere of two species of Fabaceae family, an experiment was conducted on the rhizosphere of Securigera securidaca and Trigonella foenum"=graecum with 3 replications at agricultural research station of Ferdowsi University of Mashhad. Studied traits in soil were pH, activity of acid phosphatase, alkaline phosphatase and dehydrogenase enzymes, microbial biomass and respiration, metabolic quotient and microbial quotient. Results indicated that microbial respiration and biomass in the soil were affected by species. Securigera securidaca was superior to Trigonella foenum"=graecum for microbial respiration and biomass in the soil, significantly. Also, activity of acid phosphatase, alkaline phosphatase, dehydrogenase enzymes, metabolic quotient and microbial quotient in the rhizosphere of both species were different, statistically, so that activity of acid phosphatase, alkaline phosphatase, dehydrogenase enzymes, metabolic quotient and microbial quotient of Securigera securidaca were the higher than Trigonella foenum"=graecum. In general, results of this study showed that species can affect rhizosphere traits and microbial activity in soil. However, different biotic and abiotic variables can affect the root rhizosphere and microbial processes and activities which require more extensive studies in this field.}

\vspace{0.5cm}
\end{abstract}
\end{center}
\noindent \textbf{Keywords:} Biomass. , dehydrogenase, microbial respiration, rhizosphere
\index[key]{Biomass. }
\index[key]{Dehydrogenase}
\index[key]{Microbial respiration}
\index[key]{Rhizosphere}
\end{document}
