p may optionally be substituted for the final of ruh 'to mount' in the Causative.,
As व्रीहीन् रोपयति or रोहयति ॥ According to Padamanjari this sutra could be dispensed with. The form रोपयति could be obtained from the root रुप् of Divadi class : which though meaning मोहन may be taken to mean 'grow' also; अनेकार्थत्वाद् धातूनाम् ॥,