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Department of Na

Department of Na in Ayutthaya Period, was responsible for agricultural activities (since established in 1350). It was a part of Ayutthaya's unique administration system called "Chatusadom". The system consisted of four departments - Maung, Wang, Khlang and Na.

In Chatusadom system, a department functioned as a ministry. As a result, several announcements and royal decrees in the past sometimes called the Department of Na as the Department of Kasettrathikarn, the Ministry of Na or the Ministry of Kasettrathikarn. The person in charge of the Department is called Khun Kasettrathibodhi.

The titles of the authority in Chattusadom system were changed several times. For example, in the reign of King Barommatrailokkanat (1448 - 1488), the chief officer who administrated the Department of Na was called Phra Kasettrathibodhi and then changed to Chao Phraya Polthep Senabodhisrichai Nopparatkasettrathibodhi Aphaiphiriyaborakromphadhu in the reign of King Prasatthong. The name lasted until Ratanakhosin Period.

In Ratanakhosin Period, the King Rama 4th renamed the title to Chao Phraya Polthep Suppapolsepsenabodhi Sriphichaiyarajmahaisawan Anaekanantathanyahanphichanpatipat Nopparatmoorathathon Mahidsarasamuhachet Kasettrathipbodhi Aphaiphiriyaborakrombhahu.

The written evident of Department of Na's responsibilities was first found as in the absolute law of King U-thong of Ayutthaya's reign. The department was responsible for protecting and preventing the conflicts over rice, crops and livestock. This marks a very important development in Thai agriculture.

The role of the Department of Na became more intense as it was stated in The Ministry Act during reign of King Phrasatthong. It covered the management of land reformation, irrigation and livestock, collecting broken rice grain for the royal granary, management of the king's land donation, solving conflicts over land ownership, and appointment of officers to stay in provincial towns. In addition, the act also specified nine seals for use in different functions for Chao Phraya Poltep position.

Until the reign of King Rama V of Ratanakhosin, the responsibilities of the department of Na covered land-survey officer appointment, collecting farming taxes, solving the conflicts over land ownership, purchasing and distributing rice for royal granary.


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