I bought this book over 10 years ago and still re-read it from time to time. It follows the progress of a scientist who starts to question the validity of traditional science - due to the increasing speciality of scientists who cannot see the big picture outside of their field of expertise. Fukuoka explains his early failures with pruning experiments, but gradually things change and get better. He develops his 'natural farming' techniques that can rival 'traditional' methods in terms of yield, yet require less time and physical input to the land.
The books shows that a different way is possible - a gentler way. You learn so much about a man's struggle and his successes. Totally compelling and a classic.
Fukuoka died in 2008, aged 95 - his way of life enabled him to have a long and healthy time on earth - no bad thing!