Evaluation of Physicochemical Properties of Sandy-Textured Soils under Smallholder Agricultural Land Use Practices in Sarawak, East Malaysia
Table 2
Present management practices of smallholder agricultural land uses at the Sabal area.
Management practices
Crops
Rubber (n = 7)
Oil palm (n = 9)
Pepper (n = 4)
Farmland size (ha)
0.11
2.70
0.05
Planting space (m)
2.65
8.5
1.9
Plant density (trees·ha−1)
1675
160
3017
Fertilizers application
Source
—
Subsidized by Farmers’ Organization Authority
Subsidized by Malaysia Pepper Board and Farmers’ Organization Authority and self-purchased
Frequency
No fertilizers application for productive rubber trees
3 to 4 times annually
3 to 12 times annually
Annual rate (kg·ha−1·yr−1)
—
242
6323
Estimated nutrients applied
N (kg·ha−1·yr−1)
—
89
1669
P (kg·ha−1·yr−1)
—
49
1337
K (kg·ha−1·yr−1)
—
34
828
Mg (kg·ha−1·yr−1)
—
—
37
TE (kg·ha−1·yr−1)
—
—
37
Annual yield (t·ha−1·yr−1)
1.35
n.d.+
6.62
Average of the information obtained based on interview at all study sites. +The oil palm planted is still at young stage (1–3 years old) and not productive at the time of field survey.
