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Table 4.1(b) Moisture Content

DAYS MOISTURE CONTENT (%)

SAMPLE 1 SAMPLE 2 SAMPLE 3 SAMPLE 4
1 26 39 85.71 66
3 29 43 88 68
5 36 42 75 61
7 34 45 78 59
9 37 48 72 58
11 35 46 70 59
13 36 45 67 54
15 38 48 69 56
17 34 46 64 51
19 32 45 63 46
21 32 44 62 46
23 31 43 58 45
25 31 42 52 39
27 30 42 49 38
29 29 41 50 37
31 28 42 49 36
33 27 41 47 36
35 24 39 45 35
40 24 37 39 34
45 21 35 38 33
50 21 33 37 35

100
90
MOISTURE CONTENT (%) 60
80
70
50
40
30
20
10
0
0 10 20 30 40 50 60
MOISTURE CONTENT (%) SAMPLE 1
MOISTURE CONTENT (%) SAMPLE 2 COMPOST DURATION (DAYS)
MOISTURE CONTENT (%) SAMPEL 3
MOISTURE CONTENT (%) SAMPLE 4

Figure 2: Comparison between moisture content (%) and composting duration (days)

4.1(c) pH Value

The optimum pH value range for the composting process is between 6.5 - 7.5 (Latifah, 2001). Comparison of the average
pH value for all samples are shown in Figure 4.2.3. From the graph of the comparison, the range of the average pH of Sample
3 (7.0 - 7.6) during the composting process taking place is much better and is within the range of the optimum pH of 6.5 -
8.5 compared to Sample 4 which has a value range of the average pH is relatively low at between 6.6 -7.1. Meanwhile, the
final pH value of the resulting compost for sample 3 after maturation phase is also quite good and approaching the neutral
value of 7 compared to Sample 4, is 6.6. However, the resulting compost is also still safe to use on crops as they comply with

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