Section: New Results
GreenLab Calibration on cultivated plants
The GreenLab model and the software Digiplante begin to be spread in several laboratories (CAU in China, Wageningen University), France (Inra, Cirad, ITB). This generates a time consuming support for teaching, training, debugging and improving particular cases. Nevertheless, competent end users begin to participate strongly to the endeavours around the calibration of the model.
Research works at CAU
The Chinese Agriculture University has long term collaboration with the Digiplant team. Professors Zhang and Guo are the best users of the GreenLab model. This year were the Phd defences on Maize and Tomato that are respectively the 7th and the 8th Phd supervised by Ph de Reffye in China. The work on maize gave first interesting results about the stability of the parameters of the model on a 5 years experiment. Effect of environment was assessed. The work on Tomato studied the effect of light and density on the growth. These two works were the first done on the validation of the model on real plants.
New plants are tested by new Phd students: Rice, Cotton plant, Soy bean, Cucumber, Pine. Digiplante will be tested at the level GL2 for Cotton and GL3 for Cucumber (rhythmic apparition of fruits).
Research works in France
The Digiplante software is now used in several research centers for Agronomy. At Inra Grignon a first study on Canola has been worked out with JM Allirand and A. Jullien. Collaboration should be extended with a Phd and also with collaboration with the CAU. At Inra Lepse, V Letort has collaboration with A. Christophe on the calibration of the Growth of Arabidopsis. A paper is submitted. A new Phd B. Pallas will use Digiplante to model the grapevine development and growth.
The collaboration with ITB is the first industrial contract to optimize a plant culture and build decision support systems for farming techniques. The research work is shared between the searchers of ITB and the Digiplant team. First results are quite encouraging on the model calibration on Beet-root are quite encouraging. The major issue is to integrate a high genetic variability inside the plantation. First results should be carried out in 2007.