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Table 6. NPV and IRR of bamboo plantation for culm product

year plantation expense of bamboo (baht/rai) Income (baht/rai) Cash Flow

1 4,150 - - 4,150
2 900 - - 900
3 1,140 960 - 180

4 1,500 2,000 500
5 2,020 3,360 1,340
6 2,340 5,040 2,700

7 3,540 7,040 3,500
8 3,780 8,640 4,860
9 5,380 11,200 5,820

10 5,700 13,200 7,500
11 5,700 14,400 8,700

12 7,300 15,360 8,060
NPV 9,419.88
IRR 32%

B/C 1.95

Table 7. NPV and IRR of bamboo plantation for culm and shoot product

plantation expense of bamboo Culm income Shoot income Total income
year Cash Flow
(baht/rai) (baht/rai) (baht/rai) (baht/rai)

1 18,300 - - - - 18,300
2 5,800 - 5,280 5,280 - 520
3 7,040 960 7,920 8,880 1,840
4 8,480 1,680 10,560 12,240 3,760

5 10,000 2,560 13,200 15,760 5,760
6 11,360 3,600 15,840 19,440 8,080
7 11,520 4,800 18,480 23,280 11,760
8 11,520 5,280 21,120 26,400 14,880
9 10,160 6,720 23,760 30,480 20,320

10 8,960 6,720 26,400 33,120 24,160
11 7,760 5,760 26,400 32,160 24,400
12 6,560 5,760 26,400 32,160 25,600
NPV 30731.17

IRR 31%
B/C 1.51

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