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

Table 2

Mean squares values of potato growth and quality components as influenced by phosphorus and potassium and their interaction.

Parameters		Phosphorus	Potassium	Phosphorus × potassium
Degree of freedom		2	3	6
Growth parameters	Primary stem number/hill	1.60	0.46^ns	0.25^ns
	Primary branch number	0.35^ns	2.08	0.52^ns
Quality components	Very small-sized (ton/ha^−1)	0.023	0.012	0.004
	Small-sized (ton/ha^−1)	0.06	0.06	0.01
	Medium-sized (ton/ha^−1)	204.1	144.7	25.3
	Large-sized (ton/ha^−1)	154.8	68.7	21.4

, , : significant differences at 1 and 5% level of significance, respectively; ns = nonsignificant at 1 and 5% level of significance.