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\hypersetup{pdftitle={Precision Agriculture in Integrated Nutrition Management Programm for Export Roses in Colombia},pdfauthor={Jose Manuel Pardo, Maria Martinez-Salgado, Rodrigo Ortega-Blu},pdfsubject={Tropentag 2018: Abstract},pdfkeywords={Exportation Roses, Integrated Nutrition Management, Precision Agriculture },pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 17-19, 2018, Ghent}}\\[1ex] \Large{``Global food security and food safety:\\The role of universities''\\[2ex]}}
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\Large{\textbf{Precision Agriculture in Integrated Nutrition Management Programm for Export Roses in Colombia\footnote{\textbf{Contact Address:} Maria Martinez-Salgado, University of Bonn, Tropen, Hinter Hoben 143, 53129~Bonn, Germany, \mbox{e-mail}: \email{mmmartinez@uni-bonn.de}}\\[0.8ex]}}
\normalsize{\textsc{Jose Manuel Pardo$^{1}$, Maria Martinez-Salgado$^{2}$, Rodrigo Ortega-Blu$^{3}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$Rosas Agua Clara, Colombia, Tecnical Manager, }}}
\item[]{\small{\textit{$^{2}$University of Bonn, Tropen, Germany}}}
\item[]{\small{\textit{$^{3}$Neoag Colombia, Director, }}}
\end{itemize*}
\index[author]{Pardo, Jose Manuel}
\index[author]{Martinez-Salgado, Maria}
\index[author]{Ortega-Blu, Rodrigo}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
Colombia is second country in flowers exportation, with \mbox{16\,\%} of the world market, after Holland, with \mbox{56\,\%}. Based on experiences in intensive export crops in Chile, where the Integrated Nutrition Management (MIN) programme is used since more than 10 years, supported by the use of high efficiency fertiliser diagnostic tools, high quality organic matter, site"=specific inoculants and precision agriculture technologies, a commercial trial was proposed, evaluating the effect of MIN on rose cultivation. The study was conducted in a production block for a period of 24 months. Two treatments were evaluated: Control (C), chemical fertilisation and \mbox{200\,kg} of mature compost of rose material and chemical fertilisation) and MIN (T1) treatment with chemical fertilisation \mbox{75\,kg} compost, humic extracts and site"=specific bio"=inoculant with PGPR bacteria from the genera Bacillus, Pseudomonas and Streptomyces. The variables followed included plant biomass by NDVI, estimated from the active OptRx sensor (AgLeader Inc.), basal production and chemical properties of tissue and soil. As results, statistically significant differences were observed ($p < 0.05$) in relation to the content of foliar N-NO$_{3}^{}$ and N metabolised in time, being lower in the treatment with MIN product probably of a greater vigour of plant estimated through of the NDVI ($p < 0.05$), which causes a dilution effect of the N content. Likewise, statistical differences were observed in the production of Biomass by NDVI and the No. of basal (vigorous stems that develop in the base of the plant ) reaching \mbox{30\,\%} more in the treatment with MIN, demonstrating the effect of promoting plant growth of the humic substances and the site"=specific microbial inoculant.}

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\noindent \textbf{Keywords:} Exportation Roses, Integrated Nutrition Management, Precision Agriculture 
\index[key]{Exportation Roses}
\index[key]{Integrated!Nutrition Management}
\index[key]{Precision Agriculture }
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