| 504 / | HD | PLANT PROTECTING AND REGULATING COMPOSITIONS |
| 116 | DF | PLANT GROWTH REGULATING COMPOSITIONS (E.G., HERBICIDES, ETC.) {9} |
| 150 | DF | .~ Aquatic plant regulator (e.g., algicides, etc.) {7} |
| 158 | DF | .~.~ Active ingredient contains nitrogen, other than as nitro or nitroso, wherein the nitrogen is attached directly or indirectly to carbon by nonionic bonding {2} |
| 160 | | .~.~.~ Chalcogen attached directly or indirectly to the nitrogen by nonionic bonding |