Aims, objectives and how we work Chris Murphy Project Officer, APSIM.
The New Zealand Institute for Plant & Food Research Limited APSIM at Plant & Food Research Joanna...
Transcript of The New Zealand Institute for Plant & Food Research Limited APSIM at Plant & Food Research Joanna...
The New Zealand Institute for Plant & Food Research Limited
APSIM at Plant & Food Research
Joanna Sharp
The New Zealand Institute for Plant & Food Research Limited
Generic Crop Template - History
• 26 released models use generic crop template (cereals, legumes, vines, trees, weeds, vegetables, pastures)
The New Zealand Institute for Plant & Food Research Limited
History
Generic Crop Model problems
• Inflexible model structure
• Programming skills needed to make changes
Solution
• Next generation generic crop model
• Exploits modern software systems (.Net)
• Allows flexible approaches to model structure
• Without needing to write code
The New Zealand Institute for Plant & Food Research Limited
» Dean Holzworth - CSIRO
» Neil Huth - CSIRO
» Robert Zyskowski – Plant and Food Research
» Edmar Teixeira – Plant and Food Research
» John Hargreaves - CSIRO
» Derrick Moot – Lincoln University (New Zealand)
Contributors
The New Zealand Institute for Plant & Food Research Limited
Plant Modeling Framework
The New Zealand Institute for Plant & Food Research Limited
Current status and future
Upcoming publicationBrown et al (in press). Plant Modelling Framework: Software for building and running crop models on the APSIM platform.Environmental Modelling and Simulation
Applied to a number of crops• Broccoli, Carrot, Field Pea, French Bean, Fodder
Beet, Grapes, Kale, Lucerne, Oat, Oil Palm, Potato Ongoing APSIM plant model development• Plant model for APSIMX• Existing crop models to be implemented into PMF• New crop models to be build in PMF
The New Zealand Institute for Plant & Food Research Limited
Grapevine modelling in APSIM
» Developing the model (new crop model in APSIM)
» Current focus on phenology
» Phenology:
Dormancy Budding Shoot growthFlower
developmentBerry
DevelopmentSenescence
Budburst Flowering Veraison Leaf fall
The New Zealand Institute for Plant & Food Research Limited
Budburst
» Experimental and simulation approach to define Chill Units + Thermal time
» Define start of development clock
» Subsequent phenology based on thermal time
The New Zealand Institute for Plant & Food Research Limited
Irrigation Use Efficiency
• Testing SoilWat
• Variable rate irrigation & spatial management
• Hydrophobicity
• Residues & mulches
The New Zealand Institute for Plant & Food Research Limited
Testing and improving soil C & N mineralisation
0 10 20 30 40 50 60 70 80 900
50
100
150
200
250
300
Moisture = 0.28 mm/mm - DUL/field capacity
Exp 5 ○C
Exp 10 ○C
Exp 15 ○C
Exp 25 ○C
Exp 35 ○C
APSIM 5 ○C
APSIM 10 ○C
APSIM 15 ○C
APSIM 25 ○C
APSIM 35 ○C
Days
Ca
rbo
n lo
st
(mg
CO
2-C
/kg
so
il)
The New Zealand Institute for Plant & Food Research Limited
Spatial assessment of climate change impact & adaptation
kg/ha
Baseline
(1970 -2000)Climate Change A2
(2070-2099)
Total maize silage biomass
Production system: - High WHC soil- Irrigated
Adaptation:- Sowing dates- Maize Hybrid
The New Zealand Institute for Plant & Food Research Limited
Sensitivity analysis on crop rotations
WinterWheat
Kale
Barley
WinterForage
WinterForage
Field peas3
4
5
1
2
Crop
Soil
Weather
Interactions
0 5 1015202530354045
12
39
26
23
% of total variation
Impact on Nitrogen Leaching (Lincoln – preliminary only)
The New Zealand Institute for Plant & Food Research Limited
Phase I Phase II Phase III
Using APSIM to test another model (OVERSEER®)
APSIM evaluation
N balance: APSIM vs. 2-3 year rotation treatment data
Long –term simulations
N balance: Phase I treatments with 30 years of weather data
N balance: Compare models & identify areas for improvement in OVERSEER®
APSIM vs. OVERSEER®
The New Zealand Institute for Plant & Food Research Limited
Team