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

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Relation http://oar.icrisat.org/4640/
 
Title An evaluation of the SWATRER and, CERES-Millet models for southwest Niger
 
Creator Fechter, J
Allison, B E
Sivakumar, M V K
Ploeg, R R V D
Bley, J
 
Subject Millets
 
Description 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.
 
Date 1991
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/4640/1/CP_615.pdf
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).