Year: 1991
Type: conference-paper
Abstract: The SWATKER (Dierckx el aL, 1986) soil water and \nCERES-Millet (Godwin el ol.. 1984; Jones el al. 1984) growth models \nwcre evaluated for millet (PennisNwn arnuicmun) during the 1989 \ngrowing season at Tara, Niger (300 km, south of Niamey). The \nrequired minimum data sets for the plant and soil components of \neach modcl were either f~ld determined or obtained from the \nliterature. A field experiment was carried out in order to validate \nthe soil water balance and plant growth subroutine6 Soil water \ncontent. leaf area and dry matter (DM) were measured weekly. \nGood agreement between simulated and measured soil water \ncontent was obtained with SWATRER. The CERES-Millet \nmodcl overestimated leaf area index (LAI). DM and yield by 46%, \n40% and 101% respectively. The CERES-Millet modcl \nconsistently overestimated soil water content by 5% throughout \nthe growing season. The SWATRER model showed good \npromise for evaluating waterilertilizcr management strategies. \nOnce the CERES-Millet modcl is calibrated. it can be utilized to \nevaluate new production zonq new cultivara and numerous \ncultural practices.
Language: English
Subfield: Soil Science
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W1562245305