Tracing a symbolic furrow at the end of the annual Royal Ploughing Ceremony (Preah Nongkoal), Prince Norodom Yuvaneath (King Norodom Sihanouk's son), dressed in the traditional robes of the royal court, commemorated an auspicious beginning of the new rice planting season based on an ancient Brahman custom around a procession of three royal oxen, who walk around the ‘Royal Rice Fields’ three times.

The king's coronation, mundane ceremony, royal wedding, first ploughing ceremony etc. were among the important events at which the Thai Brahman priests officiated. The Ploughing Ceremony, the first of the traditional agrarian festivals, is basically of Brahman origin. The Royal Brahman astrologers set the auspicious day and time for the Ploughing Ceremony held in the sixth lunar month, usually mid-May.