Effects of Paper-Mill Sludge as a Mulch versus Topsoil Incorporation on Potassium Uptake and the Grain Yield of Rain-Fed Wheat in a High Specific Surface Loess Soil with Illite Dominance in Clay Fraction

Table 4

Nutrient uptakes for shoot at harvest (Kg/ha).

Treatment	N	P	K	Ca	Mg
N92P0K0	50.59^cde	18.46^c	35.37^cd	10.75^cd	12.64^bcde
N0P50K0	44.27^ef	24.8^b	33.68^cde	13.34^bcd	10.76^defg
N0P0K83	50.96^cde	20.56^bc	42.3^c	11.57^cd	9.63^defg
N92P50K0	62.26^bc	23.06^bc	36.82^c	13.17^bcd	12.09^cdef
N92P0K83	69.67^b	32.94^a	95.03^a	19.03^a	20.86^a
N0P50K83	57.72^bcd	22.27^bc	70.31^b	15.54^ab	14.9^bc
N92P50K83	59.58^bc	24.7^b	39.55^c	14.24^bc	12.94^bcd
I50	35.53^f	18.4^c	22.13^e	10.64^cd	8.11 ^g
M50	44.13^ef	19^bc	31.01^cde	11.54^cd	9.07^fg
I100	36.6^f	18.38^c	22.74^de	10.5^cd	9.34^efg
M100	90.46^a	31.73^a	83.41^a	18.49^a	15.81^b
N0P0K0	46.4^def	17.91^c	31.35^cde	10.34^d	10.14^defg

Means within the same column followed by the same letter are not statistically different at 𝑃=0.05 (Fisher’s LSD).