धान्यस्नेहक्षारलवणानां धान्यकल्पं सीताध्यक्षे वक्ष्यामः ॥ कZ_०२.१५.१२ ॥
dhānya-sneha-kṣāra-lavaṇānāṃ dhānya-kalpaṃ sītādhyakṣe vakṣyāmaḥ.
धान्य-स्नेह-क्षार-लवणानां धान्यकल्पं सीताध्यक्षे वक्ष्यामः—धान्यवत् तेषां कल्प-प्रक्रिया इति ।
Because their production and primary control are tied to agriculture and state-managed cultivation/supply chains, so rules are centralized there.
A template approach: apply the same accounting/handling logic used for grain to related staples (oils, salts, alkaline products).