Hi Itiya, for India major work on crops is carried out by Mahalanobis National Crop Forecast Centre, do check the website you might get something useful.
Another source that might be worth checking out is the GeoGLAM (Global Agricultural Monitoring) project: https://www.earthobservations.org/geoglam_cm.php
And here is the link to different data sets: http://www.geoglam-crop-monitor.org/pages/data-eo-data.php
All countries you mentioned are included as partners in the project.
Here's also a link to the UN-SPIDER Knowledge Portal with some more info: http://www.un-spider.org/links-and-resources/data-sources/crop-monitoring-geoglam-geo