USDA has a vast ecosystem that can be tapped into for this kind of imagery.
CropScape hosts a geospatial data product called the Cropland Data Layer (CDL). The CDL is a raster, geo-referenced, crop-specific land cover data layer created annually for the continental United States using moderate resolution satellite imagery and extensive ...
It's like I said maybe your best bet is to contact the universities in South Korea and find out. I am sure they have somebody there can lead you to find the information you need for North Korea datasets.
Census of Agriculture (Ag Census) has this data, but you are going to have to put it together.
It goes down to FIPS Code level, so basically localities, and you'll need County Level data, plus the shapefiles.
In Earth Explorer, on the 'Data Sets' tab, expand the menu for 'Landsat Archive', then 'Collection 1 Level-1' to get Landsat 8 (expand 'Landsat Legacy' for older Landsat). You can then generate NDVI or whatever other analysis you wish in ArcGIS. Also available on Earth Explorer is 'Vegetation Monitoring' which has NDVI of MODIS and a few others. If you don't ...
There are range of useful datasets. plant-image-analysis.org is site compiling a list of publicly available datasets. Another list of comprehensive datasets are provided by PlantCV.
The quality and size of the data varies with some having ground truth, while others include tens of GBs worth of images. The parts of the plants also vary, with a few examining ...
If you set the map scale to 1:10,000 or lower you can see field boundaries for England, Wales and Scotland.
The usage is still protected under crown copyright.
The other option is to extract from Environment Agency (Opendata) Lidar to get a field boundary dataset - this will be time consuming and require data clean ...
We are currently developing Veleda, an open source, open data platform for hydroponics. We have a live data view of the state in our greenhouses. We develop the software and hardware (ESP8266) behind it and are in the process of extending it with additional parameters.
Parameters for which we are building low-cost sensors range from air and water ...
Have you checked this out ? http://earthexplorer.usgs.gov/
USDA's National Institute of Food and Agriculture (NIFA) has data like this; start at the:
NIFA Data Gateway
Enter "livestock diseases indiana" in the Search Projects form control input results in:
68 Projects with terms "livestock diseases indiana"
Second result looks like a hit:
Prevalance & Molecular Relationship Between Fecal Culture, Elisa & ...
this sounds like a pretty specific dataset that may or may not be available (I know, that's the whole point of posting on here) and while I dont know where to find this exact dataset, here are some datasets that might help you get to your end goal and/or create proxy/synthetic data for you to practice analysis on.
The Indiana Geographic Information Council (...