Nutrient Budget and Economic Assessment of Blended Fertilizer Use in Kenya Tea Industry

Table 1

Apparent nutrient budget of Blend A (NPKS 25 : 5 : 5 : 4 + 9Ca + 2.6Mg + trace elements) in Timbilil and Kagochi.

Site	NPK input as fertilizer (kg·ha^−1)			Yield (kg·Mt·ha^−1·yr^−1)	Mean NPK content in 2L + B (%)			Gross NPK removed through harvest (kg·ha^−1)			Nutrient budget (input as fertilizer and output as harvest) (kg·ha^−1)
	N	P2O5	K2O		N	P	K	N	P2O5	K2O	N	P2O5	K2O
Timbilil	0	0	0	2052	4.67	0.466	2.15	96	23	53	−96	−23	−53
	75	15	15	2532	4.84	0.478	2.29	123	27	70	−48	−12	−55
	150	30	30	2683	4.97	0.48	2.31	133	30	75	17	0	−45
	225	45	45	2995	4.86	0.509	2.41	146	34	87	79	11	−42
Kagochi	0	0	0	1654	4.53	0.497	2.32	77	18	46	−77	−18	−46
	75	15	15	1975	4.44	0.482	2.36	96	23	57	−21	−8	−42
	150	30	30	1808	4.54	0.454	2.26	90	18	49	60	12	−19
	225	45	45	1795	4.61	0.457	2.27	87	18	49	138	27	−4

“−” denotes a negative value.