Introduction to plant modelling. Phenology Most important stages: Sowing, Flowering & Maturity. Each phase develops through cumulative thermal time, can.

Slides:



Advertisements
Similar presentations
Implementing CGMS in Morocco and the Huaibei/Juanghuai plains Allard de Wit & Raymond van der Wijngaart.
Advertisements

Rationalization of water consumption
Introduction APSIM: is a modeling environment that uses various component modules to simulate cropping systems in the semi-arid tropics. Modules can be.
Simulating Cropping Systems in the Guinea Savanna Zone of Northern Ghana with DSSAT-CENTURY J. B. Naab 1, Jawoo Koo 2, J.W. Jones 2, and K. J. Boote 2,
Climate Data and Crop Modeling Joel Paz, Gerrit Hoogenboom, Axel Garcia y Garcia, Larry Guerra, Clyde Fraisse and James W. Jones The University of Georgia.
Corn growth & development
Development of a rice growth model for early warning and decision support systems Agriculture and Food Research Organization (NARO) Japan National Agricultural.
Key Area 2: Photosynthesis and Energy Transfer
Cover Crops and Biofuels Implications for Soil Characteristics and Plant Development Deanna Boardman October 21, 2009.
Soil Tillage, Land Preparation, and Conservation
Module X: Soil Moisture Relationships and Irrigation Lesson 2: Irrigation in Chili Pepper Cultivation After completing this lesson, you have learned to.
Crop Yield Modeling through Spatial Simulation Model.
impacts on agriculture and water resources
Application to the rice production in Southeast Asia Rice Production Research Program Agro-meteorology Division National Institute for Agro-Environmental.
Crop Structure and Development
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Active Lecture Questions for use with Classroom Response Systems Biology, Seventh.
Mladen Todorovic & Rossella Albrizio (CIHEAM-IAMB, Italy) Ljubomir Zivotic (Institute for Water Management “Jaroslav Cerni”, Belgrade, Serbia) Deficit.
Irrigation and Plant Physiology
ERS 482/682 Small Watershed Hydrology
CGMS/WOFOST model principles
The rice plant-soil-water system Crop and Environmental Sciences Division International Rice Research Institute Los Baños, Philippines.
16.391, , ,40 Climatic Risks Zoning and Brazilian biofuels agriculture USDA Global Conference on Agricultural Biofuels: Research and Economics.
Water movement in plants
Level II Horticulture Course Week 2 – Plant Science Tuesday, 28 th October 2014 Graeme Cross, CAFRE.
Receding water levels in Ogallala aquifer are threatening the sustainability of irrigated agriculture in the High Plains of Eastern New Mexico and West.
A General Plant Model. SWAT Model Simulates plant growth through leaf area, light interception, biomass production and stress simulation Water balance,
VIC: large-scale land surface hydrology ColSim: reservoir operations CropSyst: cropping systems.
Vulnerability and Adaptation Assessments Hands-On Training Workshop Impact, Vulnerability and Adaptation Assessment for the Agriculture Sector – Part 2.
Nutrient availability Temperature Daylength Solar radiation Soil moisture/ RainIrrigation Fertilizer Population Sowing date Cultivar Mineral nutrition.
PLANT PROCESSES.
EVAPOTRANSPIRATION.
Scaling up Crop Model Simulations to Districts for Use in Integrated Assessments: Case Study of Anantapur District in India K. J. Boote, Univ. of Florida.
Lecture 6 Crop water requirement - Crop coefficients for various crops. Estimation of Crop water requirement - field water balance.
Crop adaptation to future climates: Climate ready wheat Jairo A Palta CSIRO - Principal Research Scientist – Adjunct Research Professor, UWA 21 Nov 2014.
A process-based, terrestrial biosphere model of ecosystem dynamics (Hybrid v. 3.0) A. D. Friend, A.K. Stevens, R.G. Knox, M.G.R. Cannell. Ecological Modelling.
Ignacio A. Ciampitti, Cropping Systems Specialist K-State Research & Extension (TWITTER)
Basic Botany Part 2.
PLANTS.
Effect of Elevated Atmospheric CO2 Concentration to Plant Respiration
NDVI: What It Is and What It Measures Danielle Williams.
Simulation of Individual Leaf Size and Canopy Development: Approaches to Carbon Allocation and Growth Strategies. Dennis Timlin 1, David Fleisher 1, Soo-Hyung.
PROCESS (Design &management)
Frequency. Pivots Adapted to High Frequency ◦ Once a day or less.
Global Change Impacts on Rice- Wheat Provision and the Environmental Consequences Peter Grace SKM - Australia Cooperative Research Centre for Greenhouse.
BioKenaF: A crop growth simulation model for kenaf September “27-30” 2006 Madrid, Spain “A Crop Growth Dynamic Simulation Model for Kenaf” University of.
Modelling Crop Development and Growth in CropSyst
Role and Deficiency Symptoms of Potassium in Tomato.
Plants & Plant Tissues Shoots System This system is composed of a stem(s), leaves, and flowers which are adapted for support, light acquisition, water.
After completing this Lesson, you have learned to answer: 1.Why pearl millet yields are often low when grown under rainfed conditions? 2.How irrigation.
Aim: How do the structures of plants enable them to survive? RootsStems Leaves.
Sirius wheat simulation model: development and applications Mikhail A. Semenov Rothamsted Research, UK IT in Agriculture & Rural Development, Debrecen,
Unit 5 Lesson 3 Understanding Temperature Effects on Plant growth.
MODELLING CARBON FLOWS IN CROP AND SOIL Krisztina R. Végh.
Dr. Joe T. Ritchie Symposium ： Evaluation of Rice Model in Taiwan Authors ： Tien-Yin Chou Hui-Yen Chen Institution ： GIS Research Center, Feng Chia University,
Plant Growth There are many different types of plants. Some big Some small.
Climate Change and Agricultural: Trends and Bi-Directional Impacts Dennis Baldocchi Department of Environmental Science, Policy and Management University.
Growing Plants Growing plants from seeds. Seed Biology Seeds contain all the parts needed to start a new plant Structure - Embryo: a) root b) shoot Food.
Management Practices and Nitrogen Availability for Organic Vegetables Grace (Guihua) Chen University of Maryland, Dept. of Entomology Contact:
Cultivation.  Cultivation is the digging over of the top layer of the soil.
CROP PRODUCTION Unit 3: Crop Physiology. Physiology (71) The study of plant functions and responses of crops grown in ag environments.
Plants at work J E F Frost Plants at work.
Plant Structure Chapter 12.
The rice plant-soil-water system
Liquid Phase Water Flow Rs2 Rp Rsn Rs1 C Ys1 Ysn Ys2 E Rr1 Rr2 Rrn Plant Soil Atmosphere CO2 gs Leaf Stem Roots Yl Root resistance (Rr) Plant resistance.
Measurement of soil redox potential
Evangelos Gonias, Derrick Oosterhuis, Androniki Bibi and Bruce Roberts
Crop Growth Model Simulation of G2F Common Hybrids
Translocation and Transpiration
Role and Deficiency Symptoms of Potassium in Tomato
Introduction: Green revolution has increased the use of chemical fertilizer for crop production which has resulted in to reduced use of organic forms of.
Presentation transcript:

Introduction to plant modelling

Phenology Most important stages: Sowing, Flowering & Maturity. Each phase develops through cumulative thermal time, can include photoperiod & vernalisation responses.

Photosynthesis Potential Growth= f(cover, radiation, rue) ∆DM = RUE x radn x cover RUE = f(water, N, P, T, CO 2 ) cover = 1 - e -k x LAI (Beer-Lambert law) RUE – radiation use efficiency. (grams biomass / MJ) K – extinction coefficient; crop specific, affected by row spacing. Water limited growth = sw supply * TE C / VPD TE C = Transpiration efficiency coefficient. Actual growth = minimum of potential and water limited growth.

Biomass production Partitioning to leaf, stem, ear/pod and root is stage dependant. Grain filling takes priority during reproductive growth. Sink size is determined by one of Harvest Index, Grain number/size Grain cohorts (ears).

Stress affects different processes in different ways SW: Reduced availability slows dm production FX photosynthesis & phenology via supply:demand ratio FX leaf-expansion & nitrogen fixation via fr_asw N Reduction of RUE Grain N content Phenological development Frost, Age Leaf senescence

N fixation ‘Magic’ supply of N to maintain concentration in all plant organs Extra N in the system comes from roots & surface residues that are returned at maturity

Root development Constant (~20mm/day) in wet soil layers, slows down as layer dries Can be further delayed by XF

Why does my crop die? Look in the summary file: Was it ever sown? At the right time? Did it get a reasonable peak LAI? Did it encounter stress?

Why does my crop die? Look in the summary file: Was it ever sown? At the right time? Did it get a reasonable peak LAI? Did it encounter stress?

Why does my crop die? Look in the summary file: Was it ever sown? At the right time? Did it get a reasonable peak LAI? Did it encounter stress?

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.