KAMOGAWA, Chiba Pref. (Kyodo) In a tomato patch in Kamogawa, Chiba Prefecture, Kazumasa Umehara, 58, an engineer at an information technology-related firm, took a deep breath of satisfaction.

"I feel relieved," he said. "It's like I regained a lost lifestyle."

The field is part of Kamogawa Ecological-minded Kingdom, a farm set up in 1981 by Toshio Fujimoto, the late chairman of the radical three-party National Federation of Student Self-Government Associations who was arrested for leading violent demonstrations and released from the Tokyo Detention House in June 1969.