Table 1. Sequential sampling table for initiating wide-area management of R. ferrugineusin coconut.
Area sampled (h) Number of palms sampled Cumulative number of infested palms
Assumed action threshold (1%) Assumed action threshold (0.5%)
Lower limit Upper limit Lower limit Upper limit
1 150 ND 6 ND 5
2 300 ND 7 ND 5
3 450 ND 7 ND 6
4 600 ND 8 ND 6
5 750 ND 9 ND 6
6 900 ND 9 ND 7
7 1050 ND 10 ND 7
8 1200 1 11 ND 8
9 1350 1 12 ND 8
10 1500 2 12 ND 8
11 1650 3 13 ND 9
12 1800 3 14 ND 9
13 1950 4 14 ND 9
14 2100 5 15 0 10
15 2250 6 16 1 10
16 2400 6 17 1 10
17 2550 7 17 1 11
18 2700 8 18 2 11
19 2850 8 19 2 12
20 3000 9 19 2 12
21 3150 10 20 3 12
22 3300 11 21 3 13
23 3450 11 22 4 13
24 3600 12 22 4 13
25 3750 13 23 4 14
26 3900 13 24 5 14
27 4050 14 24 5 14
28 4200 15 25 5 15
29 4350 6 15
30 4500 6 15
31 4650 6 16
32 4800 7 16
33 4950 7 17
34 5100 8 17
35 5250 8 17
36 5400 8 18
37 5550 9 18
38 5700 9 18
39 5850 9 19
40 6000 10 19
41 6150 10 19
42 6300 10 20
43 6450 11 20
44 6600 11 21
45 6750 11 21
46 6900 12 21
47 7050 12 22
48 7200 13 22
49 7350 13 22
50 7500 13 23