An evaluation of the SWATRER and, CERES-Millet models for southwest Niger

Fechter, J and Allison, B E and Sivakumar, M V K and Ploeg, R R V D and Bley, J (1991) An evaluation of the SWATRER and, CERES-Millet models for southwest Niger. In: Sail Water Balance in the Sudano-Sahelian Zone: Proceedings of the Niamey Workshop, February 1991, Niamey (Niger).

PDF - Published Version
Download (885kB) | Preview


The SWATKER (Dierckx el aL, 1986) soil water and CERES-Millet (Godwin el ol.. 1984; Jones el al. 1984) growth models wcre evaluated for millet (PennisNwn arnuicmun) during the 1989 growing season at Tara, Niger (300 km, south of Niamey). The required minimum data sets for the plant and soil components of each modcl were either f~ld determined or obtained from the literature. A field experiment was carried out in order to validate the soil water balance and plant growth subroutine6 Soil water content. leaf area and dry matter (DM) were measured weekly. Good agreement between simulated and measured soil water content was obtained with SWATRER. The CERES-Millet modcl overestimated leaf area index (LAI). DM and yield by 46%, 40% and 101% respectively. The CERES-Millet modcl consistently overestimated soil water content by 5% throughout the growing season. The SWATRER model showed good promise for evaluating waterilertilizcr management strategies. Once the CERES-Millet modcl is calibrated. it can be utilized to evaluate new production zonq new cultivara and numerous cultural practices.

Item Type: Conference or Workshop Item (Paper)
Subjects: Mandate crops > Millets
Depositing User: Library ICRISAT
Date Deposited: 01 Dec 2011 14:46
Last Modified: 14 Sep 2013 12:00
Acknowledgement: UNSPECIFIED
View Statistics

Actions (login required)

View Item View Item