Potato (Solanum tuberosum L.) Growth and Quality as Influenced by Inorganic Fertilizer Rates in Northwestern Ethiopia

Table 4

Interaction effects of phosphorus and potassium fertilizers on the tuber size distribution of potato.

P2O5 (kg/ha^−1)	K2O (kg/ha^−1)	Tuber size distribution (ton/ha^−1)
		Very small-sized	Small-sized	Medium-sized	Large-sized
0	0	0.133^c	0.22^d	11.2^f	10.0^c
	100	0.15^c	0.23^d	12.5^ef	10.0^c
	200	0.16^c	0.30^d	13.9^ef	11.0^c
	300	0.16^c	0.23^d	13.7^ef	8.3^c
34.5	0	0.13^c	0.20^d	11.4^f	9.0^c
	100	0.26^b	0.40^bc	20.2^cd	18.3^ab
	200	0.33^a	0.50^a	28.3^a	20.0^a
	300	0.23^b	0.43^ab	21.9^bc	18.0^ab
69	0	0.17^c	0.26^d	14.7^e	11.0^c
	100	0.23^b	0.33^c	18.2^d	15.6^b
	200	0.23^b	0.46^ab	24.1^b	18.2^ab
	300	0.23^b	0.40^bc	20.1^cd	18.0^ab
LSD		0.06	0.05	2.79	2.84
CV (%)	27.3	15.2	9.7	12.1