FieldPea
The fieldpea module is currently under development and has only received testing in South Australia over a range of sowing dates in two seasons under dryland conditions. Cultivars currently simulated in order of earliest to latest flowering are: Parvie, Excel, Parafield, Kaspa and Mutka. Green area of stems and tendrils is not explicitly simulated but included as part of the leaf area index. There is no explicit differentiation between semi-leafless and conventional types
Users are invited to provide feedback on module performance to the convenor, Michael Robertson (Michael.Robertson@csiro.au).
Go to generic Plant model documentation
Science notes
The parameters are for the fieldpea module are those for chickpea, unless specified below. Refer to the PLANT module science document for detail on the definition of parameters:
Shoot_rate – 4 o Cdays per mm
Cardinal temperatures for thermal time. 3, 28, 40 o C from Olivier and Annandate (1998)
Leaf appearance rates 40 o Cd per leaf: from Olivier and Annandate (1998)
Branching parameters – complete guess – 2.5 leaves per node at 4 nodes onwards
Rue of 1.1 g/MJ. From Jamieson, Wilson and Hanson (1984)
Node number correction = 1.2
Leaf size vs node number – use fababean numbers
SLA_max = 30000 mm 2 /g
SLA_min = 20000 mm 2 /g
Temperature and root advance cardinal temps of 0, 20, 32 o C
Initial tpla =1000 mm 2 per plant
Transpiration efficiency – 0.004 Pa
Rate of HI increase (all cultivars) – 0.025 per day (Lecoeur and Sinclair 2001)
Relevant references
Jamieson PD, Wilson DR and Hanson R 1984. Analysis of response of field peas to irrigation and sowing date. 2. Models of growth and water use. Proceedings of the NZ Society of Agronomy 1984 75-81. Lecoeur J and Sinclair TR 2001. Harvest index increase during seed growth of field pea. European Journal of Agronomy 14: 173-180.
Olivier FC and Annandale JG 1998. Thermal time requirements for the development of green pea (Pisum sativum L.). Field Crops Research 56: 301-307.
Module performance
Figures below show module performance for one cultivar (Parafield) at Roseworthy in South Australia over two seasons. Prediction of flowering is for 5 cultivars (Parv, Excel, Parafield, Kaspa, Mutka) over those same two seasons.
Roseworthy 2003 sown 10th June .
Roseworthy 2002 sown 17th May
Roseworthy 2002 sown 6th June
Phenology
Agreement for 5 cultivars over 4 sowing dates in South Australia Squares are observed and crosses are simulated