This would, as far as I know, relate only to the cultivation of opium and cannabis. The amendment is covered by section 17:
(1) A person shall not cultivate opium poppy or any plant of the genus Cannabis except under and in accordance with a licence issued on that behalf by the Minister.
(2) Every person who cultivates opium poppy or a plant of the genus Cannabis in contravention of subsection (1) of this section shall be guilty of an offence.
Section 21 also covers it:
(1) A person who attempts to commit an offence under this Act, or who aids, abets, counsels or procures the commission of an offence under this Act, or who solicits or incites any other person to commit an offence under this Act shall be guilty of an offence.
I think the two sections cover the Deputy's amendment unless he has any other point to make.