Jadam Organic Farming
Jadam Organic Farming was founded by Youngsang Cho (the son of Han Kyu Cho), and is a natural continuation of Han Kyu Cho's work. Jadam is a Korean acronym which means, "people who are like nature." In many ways, it is a simplification of his father's methods; thus, both systems dovetail well. Youngsang Cho's has perfected a plethora of inexpensive and non-toxic insecticides that are easy to make. Jadam's JMS solution is also of note, as it is a simplified version of his father's IMO4.
Many videos with english subtitles make learning this system easy. Here is a link to the Jadam English-language website:
Then click on Jadam Lectures - lots of lectures with English subtitles.
And here are links to the two must-have books on Amazon.com:
"From deep in my heart, I welcome you to the Jadam movement. Let us go together to a more beautiful world where people are once again in control of their own farming, save themselves and nature from exploitation, and become more nature-like." - Youngsang Cho