Part II : 30%+30% of the total farm area (~10 rai) is the agricultural land which is further divided into 2 sections. The first half (5 rai) is paddy rice and the remaining (5 rai) is field crops or fruit trees depending on the condition of land and market. His Majesty has calculated the water requirement for cultivation to be amounted to 1,000 m3 /rai in the dry season. Therefore, the total water reserve for 10 rai is added up to 10,000 m3 .