Armstrong, Nikaido, Marmelstein, Kubovcik & Murray
Physiologically active agent for agriculture use
 A mixture of 2-piperidone and an N-acyllactam compound for use as a soil amending agent which is provided in a molar ratio of 2-piperidone to N-acyllactam compound in the range from 0.1:1 to 10:1 is effective in the promotion of plant growth. 
Taki Chemical Co., Ltd.
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A01N A01N A01N
inventional inventional inventional
Yoshio Shigeru Osamu Minoru Kaoru Hironori
Maekawa Isoda Yagyu Okumura Yagi Mizuno