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JECAM | Joint Experiment for Crop Assessment and Monitoring

Bangladesh: Barisal / Alamdanga

Project Overview

Goals of the site in terms of:

 Mapping Resolution: 10 m
Timeliness (with regards to growing season): Emphasis will be on monitoring crop growth during the dry and mostly cloud free winter months

The current project is in the Research phase.

Project Reports

2017 Site Progress Report

Implementation Plans

Crop identification and acreage estimation:
We have conducted a large study under the STARS project for the Barisal site (Fig 1). We collected information on croptypes for 2 years. In the coming season (winter 2016 - 2017), we will start a wheat blast monitoring project, for which we will continue to collect information on crop types.
We will also engage in a yield estimation study on farmers fields in the Dinajpur and Alamdanga regions. For that project, we will collect information on crop types and digitize field boundaries.

Residue and Tillage mapping:
We are monitoring subsets of the AOI with an UAV, and some fields are left fallow during the dry winter months.

Soil moisture:
We will be monitoring soil moisture for irrigation experiments

Crop biophysical variables:
Percent ground cover (fCover) will be collected from farmers fields for another project, for which we are developing a smart phone app to estimate ground cover from RGB photos.
We are also running irrigation, nutrient and varietal experiments  on farmers fields in that region. For those experiments, we are also collecting LAI, fAPAR, and yield  data.
Furthermore, we will make crop cuts in farmers fields, for yield and biomass estimation of maize, wheat, rice and possibly other crops, such as mungbeans.

Site Description


Bangladesh Barisal
Site Extent   Centroid: 22.79, 90.37
Top left: 22.79, 90.39 Bottom Right: 22.740, 90.42

Bangladesh - Alamdanga
Site Extent   Centroid: 23.47, 88.450
Top left: 23.806, 88.915 Bottom Right: 23.72, 89.008

The following description is only for the Barisal site. We are proposing to work at 3 sites, spread from the north to the south (Fig1 )
 Centroid:   Latitude: 22.799   Longitude: 90.37
 Site Extent
  Top-Left:         Latitude: 22.79    Longitude: 90.39
  Top-Right:       Latitude: 22.82    Longitude: 90.42
  Bottom-Left:    Latitude: 22.77    Longitude: 90.39
  Bottom-Right:  Latitude: 22.740  Longitude: 90.42

Figure 1: Location of proposed project sites of CIMMYT in Bangladesh. We will collect detailed ground truth data from Barisal and AlamDanga (formerly Chuadanga) and Dinajpur is being considered as a future site.

Typical Field Size (Area): 0.05 to 0.1 ha

Crop Types: Rice, wheat, mungbean (Vigna radiata (L.), lathyrus (Lathyrus sativus L.), maize, jute

Typical Crop Rotation: rice-rice, rice-wheat, rice-maize, rice-legume crop (2-3 crops per year)

Crop Calendar: Summer planting: July; winter planting: November to February

Climatic Zone: Sub-tropical monsoon

Soil Texture: clay-loam

Landscape Topology:  flat, delta region

Soil Drainage Class: Poor

Irrigation Infrastructure: Shallow tube wells  (mostly)

Other Site Specifications:  CIMMYT conducts many on-farm experiments in that region

Specific Project Objectives & Deliverables

 Mapping Agricultural Areas

 Land Cover

 Cropped Land

Estimating Crop Areas 

 Crop Growing Conditions Over the Growing Season 

Estimation of Biophysical Variables

In Situ Observations

  1. Parameter: Ground Cover ( fCover)
    Data Collection Protocol:

    RGB photos taken with smart phones from above (NADIR), analysis with CanEye, possibly automated program

    Frequency: Every 2 weeks for wheat and mungbean, maize from crop emergence until crop reaches about 1 m height
  2. Parameter: LAI
    Data Collection Protocol:

    Measurement with SunScan and PocketLAI app

    Frequency: Every 2 weeks from emergence until maturity
  3. Parameter: multispectral-data
    Data Collection Protocol:

    Use of UAV (5 bands), 10 cm resolution

    Frequency: Every 2 weeks
  4. Parameter: Crop type and field boundaries
    Data Collection Protocol:

    Use of UAV (RGB images)

    Frequency: Once per season

EO Data Requirements

Approximate Start Date of Acquisition: January 1, 2017
Approximate End Date of Acquisition: March 31, 2017
Spatial Resolution: 2.4 m or better
Temporal Frequency: Every two (2) weeks
Latency of Data Delivery: High flexibility
Wavelengths Required: Red, NIR
Across Swath:
Along Track:

SAR Data Requirements

Approximate Start Date of Acquisition: December 1, 2016
Approximate End Date of Acquisition: May 15. 2017
Spatial Resolution: 3-5 m
Temporal Frequency: Every 2 weeks
Latency of Data Delivery: Flexible
Wavelengths Required:
Polarization VV, VH
Incidence Angle Restrictions:
Across Track:
Along Track:


Bangladesh Barisal

Latitude: 22.79
Longitude: 90.37

Site Extent
Top left
Latitude: 22.79
Longitude: 90.37
Bottom Right
Latitude: 22.740
Longitude: 90.42

Bangladesh - Alamdanga

Latitude: 23.47
Longitude: 88.450

Site Extent
Top left
Latitude: 23.806
Longitude: 88.450
Bottom Right
Latitude: 23.72
Longitude: 89.008

Optical Sensors

Sentinel 2
Imaging Mode:
Spatial Resolution: 1.2 to 2.4 m
Acquisition Frequency: Every 2 weeks
Pre-Processing Level: VW-2 and 3: “Standard,” in general: as high as possible
Application: Nearest neighbour resampling, sensor and atmospherically corrected

JECAM | Joint Experiment for Crop Assessment and Monitoring | Group on Earth Observation

©2013 Joint Experiment for Crop Assessment and Monitoring © HER MAJESTY THE QUEEN IN RIGHT OF CANADA SA MAJESTE LA REINE DU CHEF DU CANADA (2012)