Response of Bread Wheat (Triticum aestivum L.) to Potassium (K) and Blended NPS Fertilizer Rates in the Nitisols of Southern Ethiopia

Table 10

The interaction effect of NPS and K on straw yield (SY) (t/ha) and agronomic efficiency (AE) of bread wheat at Sodo Zuria, Wolaita Zone, Southern Ethiopia, during 2016.

Fertilizer (kg·ha^−1)	KCl (kg·ha^−1)
NPS	0	25	50	75
SY (t ha^−1)
0	0.64^k	0.74^k	1.04^jk	0.70^k
50	1.56^ij	1.86^hi	2.35^gh	2.4^fgh
100	2.98^def	2.82^efg	3.28^cde	3.3^cde
150	3.43^cd	4.03^b	5.13^a	3.8^bc
200	4.10^b	3.77^bc	3.85^bc	3.71^bc
LSD (0.05)	0.59
CV (%)	12.9
AE (kg·kg^−1)
0	—	2.000^h	15.00^bc	9.02^g
50	11.53^defg	10.68^fg	14.40^bcd	12.4^cdef
100	15.50^bc	15.413^bc	16.96^ab	13.90^bcde
150	12.37^cdef	14.01^bcde	19.48^a	13.94^bcde
200	10.28^fg	10.16^fg	11.25^efg	8.81^g
LSD (0.05)	3.15
CV (%)	16.05

LSD: least significant difference at the 5% level; CV: coefficient of variation; means in columns followed by the same letters are not significantly different at the 5% level of significance; SY: straw yield; AE: agronomic efficiency.