\documentclass[english,german]{scrartcl}
\usepackage{fontspec}
\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{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={Cover Crops and Beneficial Microorganisms as Affecting Soybean Development},pdfauthor={Adriano Stephan Nascente, Fernando Couto De Araújo, Mariana Aguiar Silva},pdfsubject={Tropentag 2020: Abstract},pdfkeywords={Millet, multifunctional microorganisms, plant development, sustainable agriculture},pdfpagemode=None,colorlinks=true}
\else
\usepackage{textcomp}
\fi
\begin{document}
\ifpdf
\parbox[b]{2.5cm}{\resizebox*{2.5cm}{!}{\includegraphics{dtt2020.jpg}}}
\else
\parbox[b]{2.5cm}{\resizebox*{2.5cm}{!}{\includegraphics{dtt2020.eps}}}
\fi
\hfill
\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 9-11, 2020, virtual conference}}\\[1ex] \Large{``Food and nutrition security and its resilience\\ to global crises''\\[2ex]}}
\hspace{0.1cm}
\begin{center}
\Large{\textbf{Cover Crops and Beneficial Microorganisms as Affecting Soybean Development\footnote{\textbf{Contact Address:} Adriano Stephan Nascente, Brazilian Agricultural Research Corporation (EMBRAPA), Rice and Beans, P.O. Box 179, Highway 462, km 12, 75375000~Santo Antônio de Goiás, Brazil, \mbox{e-mail}: \email{adriano.nascente@embrapa.br}}\\[0.8ex]}}
\normalsize{\textsc{Adriano Stephan Nascente$^{1}$, Fernando Couto De Araújo$^{2}$, Mariana Aguiar Silva$^{3}$}}
\end{center}
\begin{itemize*}
\item[]{\small{\textit{$^{1}$Brazilian Agricultural Research Corporation (EMBRAPA), Rice and Beans, Brazil}}}
\item[]{\small{\textit{$^{2}$Servico Nacional de Aprendizagem Rural, Brazil, }}}
\item[]{\small{\textit{$^{3}$Federal University of Goias State, Brazil}}}
\end{itemize*}
\index[author]{Nascente, Adriano Stephan}
\index[author]{De Araújo, Fernando Couto}
\index[author]{Silva, Mariana Aguiar}
\begin{center}
\vspace{1.1cm}
\textbf{Abstract}
\begin{abstract}
\normalsize{
The use of multifunctional microorganisms can provide beneficial effects on plant growth. Additionally, the cultivation of cover crops in the agricultural area provides benefits for the chemical, physical and biological attributes of the soil, contributing to the increase cash crop grain yield. Thus, the objective of this work was to determine the effect of cover crops mix in combination with beneficial microorganisms in soybean development. The experimental design was a randomised block in the 6\,$\times$\,2 factorial scheme, with six combinations of soil coverings (1. Millet (\textit{Penisetum glaucum}) + Crotalarias (\textit{Crotalaria juncea}, \textit{C.~spectabilis} and \textit{C. ochroleuca}), 2. Millet + pigeon pea (\textit{Cajanus cajan}), 3. millet + \textit{Urochloa ruziziensis}, 4. millet + \textit{U. ruziziensis} + pigeon pea, 5. millet + buckwheat (\textit{Fagopyrum esculentum}) and 6. fallow), with or without the application of beneficial microorganisms (\textit{Trichoderma asperellum} pool) in the soybean crop. Based on the results, we could inferring that there was no interaction between cover crops and beneficial microorganisms. Treatments with and without application of microorganisms did not differ between them. The mixtures millet + \textit{U. ruziziensis} and millet + \textit{U. ruziziensis} + pigeon pea provided the highest soybean yields (2,265 and 2,\mbox{440\,kg} ha$^{-1}$, respectively), differing from the other treatments. The lowest soybean grain yield was observed under the mixture of millet + crotalarias (1,\mbox{784\,kg} ha$^{-1}$). The present study showed that soybean grain yield was benefited when cultivated after millet + \textit{U. ruziziensis} grasses or their mixture with pigeon pea, due to the benefits promoted by the alternation of plants from different families in the cultivation area. It was concluded that the use of beneficial microorganisms did not provide significant increases in soybean grain yield and that the mixtures millet + \textit{U. ruziziensis} and millet + \textit{U. ruziziensis }+ pigeon pea provided the highest soybean grain yield.}

\vspace{0.5cm}
\end{abstract}
\end{center}
\noindent \textbf{Keywords:} Millet, multifunctional microorganisms, plant development, sustainable agriculture
\index[key]{Millet}
\index[key]{Multifunctional microorganisms}
\index[key]{Plant!development}
\index[key]{Sustainable!agriculture}
\end{document}
