Evaluation of Physicochemical Properties of Sandy-Textured Soils under Smallholder Agricultural Land Use Practices in Sarawak, East Malaysia

Table 7

Partial nutrient budgeting comparing fertilizer input, crop uptake, and soils (0–40 cm) for P and K in each oil palm land use.

Oil palm farmlands	Age (years)	P				K
		Fertilizers input (kg·ha^−1)	Stored in crops (kg·ha^−1)	Stored in soils 0–10 cm (kg·ha^−1)	Stored in soils 10–40 cm (kg·ha^−1)	Fertilizers input (kg·ha^−1)	Stored in crops (kg·ha^−1)	Stored in soils 0–10 cm (kg·ha^−1)	Stored in soils 10–40 cm (kg·ha^−1)
1	1	32	1	12	37	21	16	79	9
2	1	32	1	13	34	21	16	91	8
3	1	73	1	7	37	47	16	33	40
4	2	23	10	12	28	15	158	64	8
5	2	24	10	20	37	15	158	38	31
6	2	24	10	19	39	15	158	37	29
7	2	55	8	145	20	46	135	53	7
8	2	91	10	9	20	67	158	23	26
9	3	85	10	9	28	62	201	39	28