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

Table 7

Total number of tillers per plant, number of grains per spike, thousand-grain weight, above-ground biomass, and grain yield of wheat as affected by the interaction effect of NPS and KCl fertilizer rates at Sodo Zuria, Wolaita Zone, Southern Ethiopia, during 2016.

	KCl (kg·ha^−1)
	NPS (kg·ha^−1)	0	25	50	75
TTNPP	0	1.33^i	2.50^h	3.0^fgh	2.66^gh
	50	3.20^efgh	3.16^efgh	4.23^c	3.36^cdefgh
	100	3.30^cdefgh	3.50^cdefg	5.26^b	3.23^defgh
	150	3.70^cdef	3.87^cdef	6.60^a	3.90^cdef
	200	3.40^cdefgh	4.10^cde	4.20^cd	3.93^cdef
LSD (0.05)		0.97
CV (%)		16.2
NGPS (g)	0	16.3^l	22.0^k	28.3^hi	24.0^jk
	50	27.7^ij	31.7^fgh	36.3^de	31.0^ghi
	100	31.7^fgh	37.7^cd	45.7^b	36.0^de
	150	36.0^de	40.7^c	50.7^a	39.0^cd
	200	32.7^efg	35.3^def	39.0^cd	37.3^cd
LSD (0.05)		3.82
CV (%)		6.82
TKW (g)	0	27.333^g	37.33^ef	39.66^def	35.67^f
	50	42.33^cde	43.33cd	41.67^cde	44.33^bcd
	100	43.33^cd	44.33^bcd	49.33^b	45.33^bc
	150	42.00^cde	44.00^bcd	56.33^a	42.00^cde
	200	44.67^bcd	44.33^bcd	44.00^bcd	43.33^cd
LSD (0.05)		5.48
CV (%)		7.76
AGBM (t·ha^−1)	0	1.13^g	1.27^g	2.80^f	2.73^f
	50	2.57^f	3.10^f	4.53^e	4.67^e
	100	4.83^e	5.07^e	6.80^c	6.90^c
	150	5.80^d	6.67^c	9.57^a	8.10^b
	200	6.60^c	6.80^c	7.53^b	6.80^c
LSD (0.05)		0.62
CV (%)		7.28
GY (t·ha^−1)	0	0.44^j	0.49^j	1.19^i	1.12^i
	50	1.02^i	1.24^i	1.88^h	1.99^gh
	100	1.99^gh	2.23^fg	2.98^cd	2.87^d
	150	2.29^fg	2.89^d	4.34^a	3.44^b
	200	2.49^ef	2.72^de	3.25^bc	2.86^d
LSD (0.05)		0.33
CV (%)		9.01

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; TTNPP: total number of tillers per plant; TKW: thousand-grain weights; NGPS: number of grains per spike; AGBM: above-ground biomass; GY: grain yield.