Researchers of the Economic Forest Institute of the Academy of Forest Science, following their success in the study of markedly shortening the production cycle and boosting the rooting rate, tackled the problems arising in the application of the achievements.

South Hamgyong Province has created lots of Aronia Melanocarpa field this year while Jagang Province keeps complying with scientific and technological demands in planting saplings to increase the rooting rate.

In North Hwanghae Province, experience gained by Yonthan County in growing trees with economic efficiency has been generalized and the fields are properly manured and taken care of.