Applied and Environmental Soil Science

Research Article

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

Table 3

Analysis of variance for below ground yield and yield components of sweet potato as affected by varieties and P rates at Tadissa, Boloso Sore District, Ethiopia, 2016.


Parameters	Source of variation
Parameters	MSV	MSP	MSV^∗P	MSE

VL (cm)	27,689.75^∗	109.26 ns	132.42 ns	403.69
VIL (cm)	10.9^∗	0.27 ns	0.18 ns	0.204
VD (cm)	2.98^∗	0.11 ns	0.11 ns	0.063
VN (no)	278.44^∗	4.36 ns	2.6 ns	7.44
NRP (no)	80.67^∗	0.36 ns	0.51 ns	3.07
SRL (cm)	337.42^∗	5.47 ns	6.95^∗	2.74
SRW (t ha⁻¹)	627^∗	25.78^∗	9.41^∗	3.12
RDW (t ha⁻¹)	627^∗	25.78^∗	9.41^∗	3.12
MY (t ha⁻¹)	479.58^∗	301.53^∗	10.35^∗∗	1.92
TY (t ha⁻¹)	643.66^∗	275.23^∗	9.56^∗	2.54
DF	2	4	8	28

MSV = mean square of variety, MSP = mean square of phosphorus, MSV^∗P = mean square of variety by P rate interaction, MSE = mean square error, VL = vine length, VIL = vine internodes length, VD = vine diameter, VN = vine number, NRP = number of roots per plant, SRL = storage root length, SRD = storage root diameter, SRW = storage root dry weight, RDW = root dry weight, MY = marketable yield, TY = total yield, and DF = degree of freedom.