Yield and Profitability of Sweet Potato (Ipomoea batatas (L.) Lam) as a Function of Increasing Levels of Phosphorus and Varieties in Southern Ethiopia

Table 6

Interaction effect of variety and P rates on marketable root yield (t ha⁻¹) of sweet potato at Tadissa, Boloso Sore District, Southern Ethiopia.

Varieties	P rates (kg ha^−1)					Mean
	0	10	20	30	40
Awassa-83	11.75^h	22.33d^e	27.6^bc	30.22^a	29.13^ab	24.2
Kulfo	6.57^i	12.7^gh	14.88^fg	16.96^f	14.99^fg	13.22
Local	11.33^h	20.48^e	23.54^d	26.26^c	23.63^d	21.05
Mean	9.88	18.5	22	24.48	22.59	19.49
LSD (0.05), V^∗P = 2.32				CV (%) 7.1

Means with the same letters are not significantly different at the 5% probability level. CV = coefficient of variation, AW-83 = sweet potato variety named as Awassa-83, LSD = least significant difference at 5% level of significance, and V^∗P = LSD value for interaction of variety by P rate.