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Mini-Workshop in the Context of PROMISE Developing Crop Models for Use in Annual Crop Yield Forecasting Systems
for Drought Prone Environments When: 29-31 January 2001-01-11 Where: CIRAD, Lavalette Campus, Montpellier Info: Michaela Goetze (Secretariat Ecotrop),
goetze@cirad.fr, Tel +33 (0)467 61 55 11 Workshop participants: Christian Baron, CIRAD, France, crop modeller and programmer Agnes Begue, CIRAD, France, remote sensing specialist Jean-Francois Bois, IRD, France, crop physiologist Andy Challinor, Univ. Reading, UK, seasonal weather and
crop prediction Alain Clopes, CIRAD, France, GIS specialist Jean-Claude Combres, CIRAD, France, agro-meteorologist Peter Craufurd, Univ. Reading, UK, crop physiologist Michael Dingkuhn, CIRAD, France, ecophysiologist and
crop modeller Eric Gozé, CIRAD, France, biometrician Florent Maraux, CIRAD, France, agronomist Marcel de Raïssac, Cirad, France, crop physiologist Abdallah Samba, Agrhymet, Rep. Niger, agro-meteorologist Benoît Sarr, CERAAS, Sénégal, agro-meteorologist and
crop modeller Seydou Traoré, Agrhymet, Rep. Niger, crop physiologist Tim Wheeler, Univ. Reading, UK, crop physiologist Objective of the workshop To refine methodological approaches and develop a detailed workplan for crop modelling activities in PROMISE Tentative
workshop program (Chairpersons to be specified) Day
1 (29 Jan 2001) 0830 – 0900
Registration Session 1: Introduction and adoption of workshop agenda 0900 – 0910
Welcome address (F Maraux, Agronomy Program Leader, CIRAD-Amis) 0910 – 0920
Introduction of participants 0920 – 0935
Workshop objectives, basic approaches and expected outputs (M
Dingkuhn) 0935 – 0945
Discussion on workshop objectives and adoption of agenda Session 2: Simple, available technologies for forecasting of water-limited yields 0945 – 1000
SARRA – a versatile tool to assess drought impact and risk
(C Baron) 1000 – 1015
DHC – an yield forecasting system for millet used in the
Sahel (A Samba) 1015 – 1030
Discussion 1030 – 1045
Tea/coffee break 1145 – 1100
Presentation of a version of SARRA simulating photoperiodism
(S Traoré) 1100 – 1115
Modelling concepts for phenology of cereals and legumes (P Craufurd
et al.) 1115 – 1130
Discussion 1130 - 1145
A stochastic simulator of rainfall probabilities developed for
DHC (E Gozé) 1145 – 1200
Approaches for spatialisation and linkage of crop models with
GIS (A Clopes) 1200 – 1215
Discussion 1215 – 1230
Assessment of available tools Lunch Break Session 3: Ongoing methodological research 1400 – 1415
Concepts for SARRA habillée: the lady dressed up (M Dingkuhn) 1415 – 1425
SARRA habillée and the planned modelling platform ECOSYS (C Baron) 1425 – 1440
Amendments to the water balance of SARRA (C Baron) 1440 – 1500
Discussion 1500 – 1515
Tea/coffee break 1515 – 1530
Assimilation, assimilate partitioning and yield in SARRA habillée
(B Sarr) 1515 – 1530 Options for simulating intensity of production (population, plant type, N ressources) and effects of soil physics on rooting (M Dingkuhn, JC Combres) 1530 – 1545
Discussion Session 4: Choice of crops, available datasets for model validation 1545 – 1700
- Crops to be considered (P Craufurd,
M Dingkuhn) -
Available crop/meteo data at CERAAS (B Sarr) -
Available crop/meteo data at Agrhymet (A Samba) -
Available crop/meteo data at ICRISAT (M Dingkuhn for
B Clerget, Bamako) -
Available crop/meteo data at CIRAD/IER (NN for M Vaksmann) -
Available crop/meteo data at Reading and collaborators
(P Craufurd) -
Available soil maps for the Sahel (NN) -
Available soil maps for India (P Craufurd) 1700 – 1715
General assessment of data availability for crop modelling 1715 – 1730
Approaches to data management (C Baron, A Clopes) (End of a long day) Day 2 (30 Jan 2001) Session 5: Discussion of and decision on crop modelling approaches 0845 – 0900
Review of previous day’s conclusions (P Craufurd)
0900 – 0930
Input and output variables for crop simulations (discussion) 0930 – 1000 Types of scenarios to be simulated and required model sensitivities: production technology, GxE… (discussion) 1000 – 1015
Tea/coffee break 1015 – 1230
Choices of physiological modelling approaches (discussion) -
Choice of species and ideotypes, one or several models? -
Water balance (e.g., distinction between iso- and anisohydric
plants?) -
Root growth -
Phenology (mechanisms of photoperiodism, response to
T, determinate vs indeterminate plants…) -
Assimilation, growth and partitioning Lunch break Session 6: Technical aspects of model implementation and validation 1400 – 1445
Programming tools and environments, linkage to databases 1445 – 1530
Methodologies for sensitivity analyses and model validation 1530 – 1545
Tea/coffee break 1545 – 1630
How to handle spatial and temporal variability? 1630 – 1700 Feedback to the climate modellers: any revisions to the originally envisaged data requirements? 1700 – 1730 Outlook: Expected improvements for the existing yield forecasting systems? How to quantify them? Evening: Dinner outing, to be specified Day
3 (31 Jan 2001) Session 7: Development of workplan, division of tasks, general conclusions 0900 – 1000
Experimental plans (generation of data to fill knowledge gaps) 1000 – 1015
Tea/coffee break 1015 – 1100
Distribution of tasks, collaborative mechanisms, timeframe for
outputs 1100 – 1115
Plans for publication 1115 – 1145
Workshop evaluation 1145 – 1200
Closing remarks (F Maraux) (End of workshop) |