This document provides an introduction to crop simulation models. It defines a model as a set of mathematical equations that mimic the behavior of a real crop system. Modeling involves analyzing complex problems to make predictions about outcomes. Simulation is the process of building models and analyzing systems. Crop models provide simple representations of crops. The document outlines different types of models and their purposes. It describes the key components and steps involved in building crop simulation models, including defining goals and variables, quantifying relationships, calibration, and validation. Finally, it discusses several popular crop models and their uses in farm management, research, and experimental applications.
Crop modeling for stress situations, cropping system , assessing stress through remote sensing, understanding the adaptive features of crops for survival under stress .
this slide includes recent approaches to evaluate cropping system.
It includes system profitability,relative production efficiency,land use efficienct(LUE),Calculation of LUE,energy efficiency,specific energy,Rotational intensity,Cropping intensity,Multiple cropping index(MCI),Land equivalent ratio (LER),Relative yields total (RYT),Crop equivalent yields (CEY),Relative Spread Index
Crop modeling for stress situations, cropping system , assessing stress through remote sensing, understanding the adaptive features of crops for survival under stress .
this slide includes recent approaches to evaluate cropping system.
It includes system profitability,relative production efficiency,land use efficienct(LUE),Calculation of LUE,energy efficiency,specific energy,Rotational intensity,Cropping intensity,Multiple cropping index(MCI),Land equivalent ratio (LER),Relative yields total (RYT),Crop equivalent yields (CEY),Relative Spread Index
GIS and Remote Sensing in Diagnosis and Management of Problem Soil with audio...KaminiKumari13
GIS and Remote Sensing in Diagnosis and Management of Problem Soil for agriculture, soil science, agronomy, forestry, land management and planning with audio by Dr. Kamini Roy
PRECISION FARMING
It is an approach where inputs are utilized in precise amounts to get increased average yields, compared to traditional cultivation techniques. It is also known as precision Agriculture, A science of improving crop yield and assisting management decisions using high technology sensor and analysis tools. It is an approach to farm management that uses information technology (IT).
Conservation agriculture useful for meeting future food demands and also contributing to sustainable agriculture.
Conservation agriculture helps to minimizing the negative environmental effect and equally important to increased income to help the livelihood of those employed in agril. Production.
Introduction of conservation technologies (CT) was an important break through for sustaining productivity, It seeks to conserve, improve and make more efficient use of natural resources through integrated management of soil, water, crops and other biological resources in combination with selected external inputs.
The Contingency plans cover contingency strategies to be taken up by farmers in response to major weather related aberrations such as delay in onset and breaks in monsoon causing early, mid and late season droughts, floods, unusual rains, extreme weather events such as heat wave, cold wave, frost, hailstorm and cyclone.
CROP SIMULATION MODELS AND THEIR APPLICATIONS IN CROP PRODUCTION.pptxSarthakMoharana
CROP SIMULATION MODELS AND THEIR APPLICATIONS IN CROP PRODUCTION
Crop growth is a very complex phenomenon and a product of a series of complicated interactions of soil, plant and weather.
Crop growth simulation is a relatively recent technique that facilitates quantitative understanding of the effects of these factors and agronomic management factors on crop growth and productivity.
These models are quantitative description of the mechanisms and processes that result in growth of crop. The processes could be physiological, physical and chemical processes of crop.
MAJOR & POPULAR CROP SIMULATION MODELS:
DSSAT (Decision Support System for Agrotechnology Transfer)
Aqua Crop
Info Crop
APSIM (Agricultural Production System Simulator
‘Crop Modeling for Stress Situation , Assessing Stress through Remote Sensing’AmanDohre
‘Crop Modeling for Stress Situation , Assessing Stress through Remote Sensing’
Crop modeling for stress situations involves utilizing mathematical models to simulate plant growth, development, and responses under various stress conditions. These models integrate data on environmental factors, soil properties, and crop physiology to predict crop performance and yield potential. By simulating stress scenarios such as drought, heat, or salinity, crop models help assess the impact of stress on crop growth and yield, enabling proactive management decisions and adaptation strategies.
Assessing stress through remote sensing involves using satellite or aerial imagery to monitor crop health, stress levels, and productivity. Remote sensing techniques, such as multispectral or thermal imaging, detect subtle changes in plant reflectance and temperature associated with stress-induced physiological responses. These data are processed using advanced algorithms to generate stress indices and maps, providing valuable insights into spatial and temporal patterns of stress distribution across agricultural landscapes. Integrating crop modeling with remote sensing enables more accurate and timely assessments of stress impacts, facilitating targeted interventions and resource allocation for stress mitigation and crop management.
GIS and Remote Sensing in Diagnosis and Management of Problem Soil with audio...KaminiKumari13
GIS and Remote Sensing in Diagnosis and Management of Problem Soil for agriculture, soil science, agronomy, forestry, land management and planning with audio by Dr. Kamini Roy
PRECISION FARMING
It is an approach where inputs are utilized in precise amounts to get increased average yields, compared to traditional cultivation techniques. It is also known as precision Agriculture, A science of improving crop yield and assisting management decisions using high technology sensor and analysis tools. It is an approach to farm management that uses information technology (IT).
Conservation agriculture useful for meeting future food demands and also contributing to sustainable agriculture.
Conservation agriculture helps to minimizing the negative environmental effect and equally important to increased income to help the livelihood of those employed in agril. Production.
Introduction of conservation technologies (CT) was an important break through for sustaining productivity, It seeks to conserve, improve and make more efficient use of natural resources through integrated management of soil, water, crops and other biological resources in combination with selected external inputs.
The Contingency plans cover contingency strategies to be taken up by farmers in response to major weather related aberrations such as delay in onset and breaks in monsoon causing early, mid and late season droughts, floods, unusual rains, extreme weather events such as heat wave, cold wave, frost, hailstorm and cyclone.
CROP SIMULATION MODELS AND THEIR APPLICATIONS IN CROP PRODUCTION.pptxSarthakMoharana
CROP SIMULATION MODELS AND THEIR APPLICATIONS IN CROP PRODUCTION
Crop growth is a very complex phenomenon and a product of a series of complicated interactions of soil, plant and weather.
Crop growth simulation is a relatively recent technique that facilitates quantitative understanding of the effects of these factors and agronomic management factors on crop growth and productivity.
These models are quantitative description of the mechanisms and processes that result in growth of crop. The processes could be physiological, physical and chemical processes of crop.
MAJOR & POPULAR CROP SIMULATION MODELS:
DSSAT (Decision Support System for Agrotechnology Transfer)
Aqua Crop
Info Crop
APSIM (Agricultural Production System Simulator
‘Crop Modeling for Stress Situation , Assessing Stress through Remote Sensing’AmanDohre
‘Crop Modeling for Stress Situation , Assessing Stress through Remote Sensing’
Crop modeling for stress situations involves utilizing mathematical models to simulate plant growth, development, and responses under various stress conditions. These models integrate data on environmental factors, soil properties, and crop physiology to predict crop performance and yield potential. By simulating stress scenarios such as drought, heat, or salinity, crop models help assess the impact of stress on crop growth and yield, enabling proactive management decisions and adaptation strategies.
Assessing stress through remote sensing involves using satellite or aerial imagery to monitor crop health, stress levels, and productivity. Remote sensing techniques, such as multispectral or thermal imaging, detect subtle changes in plant reflectance and temperature associated with stress-induced physiological responses. These data are processed using advanced algorithms to generate stress indices and maps, providing valuable insights into spatial and temporal patterns of stress distribution across agricultural landscapes. Integrating crop modeling with remote sensing enables more accurate and timely assessments of stress impacts, facilitating targeted interventions and resource allocation for stress mitigation and crop management.
CROP MODELING IN VEGETABLES ( AABID AYOUB SKUAST-K).pptxAabidAyoub
crop modeling is future in agriculture to tackle changing environment conditions and increase food security in the world. These models incorporate various factors such as climate, soil characteristics, agronomic practices, and crop physiology to predict crop yields, water usage, nutrient uptake, and other important parameters. Crop modeling helps in understanding the complex interactions between different variables affecting crop growth and assists farmers, researchers, and policymakers in making informed decisions related to crop management, resource allocation, and risk assessment.
Role of AI in crop modeling: Artificial Intelligence (AI) plays a significant role in enhancing crop modeling by leveraging advanced computational techniques to improve model accuracy, efficiency, and scalability. One of the most important aspects of precision farming is sustainability. Using artificial neural networks (ANNs), a highly effective multilayer perceptron (MLP) model. The most common type in crop modeling is DSSAT , DSSAT (Decision Support System for Agro-technology Transfer).The Decision Support System for Agro-technology Transfer (DSSAT) is a software application program that comprises crop simulation models for over 42 crops (as of Version 4.8.2) as well as tools to facilitate effective use of the models. The tools include database management programs for soil, weather, crop management and experimental data, utilities, and application programs. The crop simulation models simulate growth, development and yield as a function of the soil-plant-atmosphere dynamics.DSSAT and its crop simulation models have been used for a wide range of applications at different spatial and temporal scales. This includes on-farm and precision management, regional assessments of the impact of climate variability and climate change, gene-based modeling and breeding selection, water use, greenhouse gas emissions, and long-term sustainability through the soil organic carbon and nitrogen balances.In conclusion, crop modeling stands as a crucial tool in modern agriculture, offering a systematic approach to understanding and predicting crop growth dynamics in diverse environmental conditions. By simulating the complex interactions between various factors influencing crop development, including climate, soil properties, agronomic practices, and genetic traits, crop models provide valuable insights for farmers, researchers, and policymakers.
Mineral nutrients and nutrition
Micro nutrients
Macro nutrients
Primary nutrients
Secondary nutrients
Mobile nutrients
Immobile nutrients
Classification of essential nutrients
Classification based on amount required
Classification in the basis amount present in plant tissue
Classification based on biochemical and physiological functions
Classification based on nutrient mobility in the plants
Partially mobile nutrients
Nitrogen uptake
These slides are about how crop and weather are interlinked an d how their association can be an impressive tools in the hands of the creative minds of the scientific world.
Crop modelling for stress situation (Sanjay Chetry).pptxsanjaychetry2
Stress in plants refers to external conditions that adversely affect growth, development or productivity of plants
Stresses trigger a wide range of plant responses like altered gene expression, cellular metabolism, changes in growth rates, crop yields, etc.
Two type of stress
Biotic Stress
Biotic stress in plants is caused by living organisms, specially viruses, bacteria, fungi, nematodes, insects, arachnids and weeds. The agents causing biotic stress directly deprive their host of its nutrients can lead to death of plants
Abiotic Stress
Abiotic stresses such as drought, excessive watering (water logging), extreme temperatures (cold, frost and heat), salinity and mineral toxicity negatively impact growth, development, yield and seed quality of crop and other plants
Crop Modelling
Crop models are a formal way to present quantitative knowledge about how a crop grows in interaction with its environment
Applications of Crop Models
Research on Interaction of Plant, Soil, Weather and Management Practices
Prediction of Crop Growth as well as Limiting factors
On farm decision making and agronomic management
Optimizing management using climatic predictions
Precision Farming and Site Specific Experimentation
Weather Based agro advisory services
Yield analysis and Forecasting
Introduction and Breeding of New Varieties
Policy Management
A Framework for Statistical Simulation of Physiological Responses (SSPR).Waqas Tariq
The problem of variable selection from a large number of variables to predict certain important dependent variables has been of interest to both applied statisticians and other researchers in applied physiology. For this purpose, various statistical techniques have been developed. This framework embedded various statistical techniques of sampling and resampling and help in Statistical Simulation for Physiological Responses under different Environmental condition. The population generation and other statistical calculations are based on the inputs provided by the user as mean vector and covariance matrix and the data. This framework is developed in a way that it can work for the original data as well as for simulated data generated by the software. Approach: The mean vector and covariance matrix are sufficient statistics when the underlying distribution is multivariate normal. This framework uses these two inputs and is able to generate simulated multivariate normal population for any number of variables. The software changes the manual operation into a computer-based system to automate the study, provide efficiency, accuracy, timelessness, and economy. Result: A complete framework that can statistically simulate any type and any number of responses or variables. If the simulated data is analyzed using statistical techniques; the results of such analysis will be the same as that using the original data. If the data is missing for some of the variables, in that case the system will also help. Conclusion: The proposed system makes it possible to carry out the physiological studies and statistical calculations even if the actual data is not present.
1 MODULE 1 INTRODUCTION TO SIMULATION Module out.docxjeremylockett77
1
MODULE 1: INTRODUCTION TO SIMULATION
Module outline:
• What is Simulation?
• Simulation Terminology
• Components of a System
• Models in Simulation
• Typical applications
• References
WHAT IS SIMULATION?
simulation may be defined as a technique that imitates the operation of a real world
system or processes as it evolves over time. It involves the generation of an artificial
history of the system and observation of that artificial history to obtain information and
draw inferences about the operating characteristics of the real system. Simulation
educates us on how a system operates and how the system might respond to changes. It
enables us to test alternative courses of action to determine their impact on system
performance. Before an alternative is implemented, it must be tested. Although
performing tests with the “real thing” would be ideal. This is seldom practically feasible.
The cost associated with changing/improving a system may be very high both in the
term of capital required to implement the change and losses due to interruption in
production operations and other losses. In most cases experimentation with the
proposed alternative is practically impossible. In addition, as the cost of proposed
changes (alternative solutions) increase, so does the cost of physically experimenting.
As an example, suppose a heavy-duty conveyor is being considered as an alternative to
the existing material handling method (by trucks) for improving productivity and
speeding up the production operations in a factory (seeFigre3). It is obvious that
installing the proposed conveyor on a test basis would probably not be cost effective.
Therefore, experimentation with alternative configurations would be practically
impossible. In stead, experimentation with a representative model of the system would
probably make more sense.
Simulation is a means of experimenting with a detailed model of a real system to
Determine how the system will respond to changes in its environment, structure, and its
underlying assumption [Harrel (1996)]. Management Scientist uses a wide variety of
analytical tools to model, analyze, and solve complex decision problems. These tool
include linear programming, decision analysis, forecasting, Queuing theory and
Alternative 1: Use lift-truck
2
Point A Point B
(Warehouse) (Factory)
Alternative 2: use a conveyor
Point A
(warehouse ) . . . . . . . . Point B
...
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Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
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1. Lecture on
Introduction to Crop simulation model
By,
Prof. S.R. Suryavanshi
ProfAsst. Professor of Agronomy,
Dr. D.Y. Patil College of Agriculture,
Talsande.
1
2. Model
A model is a set of mathematical equations describing/mimic
behaviour of a system
Model simulates or imitates the behaviour of a real crop by
predicting the growth of its components
Modeling
Modeling is based on the assumption that any given process can
be expressed in a formal mathematical statement or set of
statements.
3. Modeling :
The application of methods to analyse complex, real-world
problems in order to make predictions about what might happens
various actions.
4. Simulation:
It is the process of building models and analyzing thesystem.
The art of building mathematical models and study their properties
in reference to those of the systems (de Wit, 1982)
Crop model:
Simple representation of a crop.
SYSTEM:
Limited part of reality that contains inter
related
5. Types of models (purpose for which it is designed )
Statistical & Empirical models
Mechanistic models
Deterministic models
Stochastic models
Static models
Dynamic models
6. Statistical & Empirical models
Direct descriptions of observed data, generally
expressed as regression equations
These models give no information on the mechanisms
that give rise to the response
Eg: Step down regressions, correlation, etc.
7. Mechanistic models
• Theseattempt to usefundamental mechanisms of plant
and soil processesto simulate specificoutcomes
• These models are based on physical selection.
• Eg. photosynthesis based model.
8. Deterministic models
• These models estimate the exact value of the yield or
dependent variable.
• These models also have defined coefficients.
• Eg: NPK doses are applied and the definite yields are
given out.
9.
10. Stochastic models
• The models are based on the probability of occurrence of
some event or external variable
• For each set of inputs different outputs are given along
with probabilities.
• These models define yield or state of dependent variable
at a given rate.
11. Static models
values
• Time is not included as a variables.
• Dependent and independent variables having
remain constant over a given period of time.
12. Dynamic simulation models
• These models predict changes in crop status with time.
• Both dependent and independent variables are having
values which remain constant over a given period of time.
13. Steps in modelling
1. Define goals: Agricultural system
2. Define system and its boundaries: Crop model
3. Define key variables in system:
State variables are those which can be measured. e.g. soil moisture content,
crop yield etc
Rate variables are the rates of different processes operating in a system. e.g.
phosynthesis rate, transpiration rate.
Driving variables are the variables which are not part of the system but the
affect the system. e.g. sunshine, rainfall.
Auxiliary variables are the intermediated products. e.g. dry matter
partitioning, water stress etc
4. Quantify relationships (evaluation):
14. 5. Calibration:
Model calibration is the initial testing of a model and tuning it to
reflect a set of field data or process of estimating model parameters
by comparing model predictions (out-put) for a given set of
assumed conditions with observed data for the same conditions.
6. Validation:
Testing of a model with a data set representing "local" field data. This
data set represents an independent source different from the data
used to develop the relation
7. Sensitivity analysis:
Validated model is then tested for its sensitivity to different factors
(e.g. temperature, rainfall, N dose). This is done to check whether
the model is responding to changes in those factors or not.
16. Major & popular crop simulation models
DSSAT (Decision Support System for Agrotechnology Transfer)
AquaCrop
InfoCrop
APSIM (Agricultural Production System Simulator)
17. Components of AquaCrop, FAO model
http://www.fao.org/nr/water/infores_databases_aquacrop.htm
21. Uses
On Farm management
Crop system management: to evaluate optimum management
production for cultural practice.
Evaluate weather risk.
Investment decisions.
These are resource conserving tools
22. Understanding of research
Testing scientific hypothesis.
Yield prediction and forecasting.
Evaluation of climate change.
Useful for solving various practical problems in agriculture.
‰Helps in adaptation strategies, by which the negative impacts due
to climate change can be minimized.
Crop growth models identifies the precise reasons for yield gap
at farmer’s field and forecasting crop yields.
‰Evaluate cultivar stability under long term weather