
estimate crop yield with remote sensing and arcgis. select the right satellite imagery for prediction, and handle data availability and optional surveys to improve the model.
Prioritize pre-harvest data, use images within 20–30 days before harvest, and capture two images within 15 days for developing and validating the agitator-area model before wider application.
Identify the crop’s fully green stage just before harvest for optical crop estimation, avoiding sowing and yellowing. Use satellite images about a month before harvest for accuracy within 10–15 days.
Use ArcGIS for yield modeling and Excel for technical analysis across any software version. ArcGIS 10.0+ and Excel remain compatible.
Classify crops and non-crop areas using training samples in ArcGIS, selecting diverse samples for wheat, vegetation, urban areas, and water to achieve 80–97% accuracy.
Verify crop area by saving the project, transferring raster counts to Excel, and comparing estimated hectares with records, then compute accuracy using pixel-based area and validation.
Isolate wheat-specific NDVI from a classified raster using conditional raster analysis and SQL, mask urban and forest areas, and prepare the wheat NDVI for regression in Excel.
Develop a regression equation linking index values to crop yield using Excel to compute averages, identify max/min, and fit an exponential trend line, then apply it in ArcGIS.
Learn to extract a study area from a satellite image using mask, adjust raster bands (5,4,3), and apply stretching, histogram equalization, and standard deviation for better display.
Learn to validate survey data with 100 GPS points, plot them in ArcGIS, and build a regression model using pre-calculated yields and an exponential trend line achieving 96% accuracy.
Crop yield estimation is a critical aspect of modern agriculture. In this course, the wheat crop is covered. The same method applies to all other crops. With the advent of remote sensing and GIS technologies, it has become possible to estimate crop yields using various methodologies. Remote sensing is a powerful tool that can be used to identify and classify different crops, assess crop conditions, and estimate crop yields. One of the most popular methods for crop identification using remote sensing is to relate crop NDVI as a function of yield. This method uses various spectral, textural and structural characteristics of crops to classify them using the machine learning method in ArcGIS. Another popular method for crop condition assessment using remote sensing is crop classification then relate to NDVI index. This method uses indices such as NDVI to assess the health of the crop. Both of these methods are widely used for crop identification and assessment. Crop yield estimation can also be done by using remote sensing data. Yield estimation using remote sensing is done by using statistical methods, such as regression analysis and modelling in GIS and excel, including classification and estimation. One popular method for estimating wheat yield is the crop yield estimation model using classified and modelled data with observed records, as shown in this course. This model uses various remote sensing data to estimate the wheat yield. It is also important to validate the developed model on another nearby study area. That validation of the developed model is also covered in this course. The identification of crops is an important step in estimating crop yields and managing agricultural resources. In summary, remote sensing and GIS technologies are widely used for crop identification, crop condition assessment, and crop yield estimation. They provide accurate and timely information that is critical for managing agricultural resources and increasing crop yields.
Highlights :
Use Machine learning method for crop classification in ArcGIS, separate crops from natural vegetation
The model was developed using the minimum observed data available online
Crop NDVI separation
Crop Yield model development
Crop production calculation from GIS model data
Identify the low and high-yield zones and area calculation
Calculate the total production of the region
Validation of developed model on another study area
Validate production and yield of other areas using a developed model of another area
Convert the model to the ArcGIS toolbox
You must know:
Basics of GIS
Basics of Excel
Software Requirements:
Any version of ArcGIS 10.0 to 10.8
Excel