Various farms in Taehongdan County have increased the production of carbonated self-sufficing manure and applied it to fields on a regular basis to improve the nutritional state of potato plants.

The moisture-stricken fields in Samsu and Phungso counties are sprayed with plant activator and plant nutrition to remove the difference in growth of crops.

Similar work has been done at farms in Samjiyon City and Kim Jong Suk, Kim Hyong Gwon and other counties.