Table 11 Impact of various treatments on Ni of soil.

T₁

Control

13.52^a

T₁₅

Soil + biochar @ 2.5% W/W Soil

11.62^j,k

T₂

Soil + FYM @ 1% W/W Soil

10.63^l,m,n

T₁₆

Soil + biochar @ 5.0% W/W Soil

11.57^k

T₃

Soil + FYM @ 2.5% W/W Soil

10.59^n,o

T₁₇

Soil + ricehusk @ 1% W/W Soil

12.73^e,f

T₄

Soil + FYM @ 5.0% W/W Soil

10.55^o

T₁₈

Soil + ricehusk @ 2.5% W/W Soil

12.70^f,g

T₅

Soil + compost @ 1% W/W Soil

10.63^l,m,n

T₁₉

Soil + ricehusk @ 5.0% W/W Soil

12.66^g,h

T₆

Soil + compost @ 2.5% W/W Soil

10.62^m,n,o

T₂₀

Soil + wheat straw @ 1% W/W Soil

12.75^e,f

T₇

Soil + compost @ 5.0% W/W Soil

10.57^n,o

T₂₁

Soil + wheat straw @ 2.5% W/W Soil

12.72^f,g

T₈

Soil + poultry manure @ 1% W/W Soil

12.87^b

T₂₂

Soil + wheat straw @ 5.0% W/W Soil

12.69^f,g

T₉

Soil + poultry manure @ 2.5% W/W Soil

12.71^f,g

T₂₃

Soil + gypsum @ 1% W/W Soil

12.73^e,f

T₁₀

Soil + poultry manure @ 5.0% W/W Soil

12.75^d,e,f

T₂₄

Soil + gypsum @ 2.5% W/W Soil

12.59^h,i

T₁₁

Soil + pressmud @ 1% W/W Soil

12.84^b,c

T₂₅

Soil + gypsum @ 5.0% W/W Soil

12.55ⁱ

T₁₂

Soil + pressmud @ 2.5% W/W Soil

12.82^b,c,d

T₂₆

Soil + horse waste @ 1% W/W Soil

10.70^l

T₁₃

Soil + pressmud @ 5.0% W/W Soil

12.80^c,d,e

T₂₇

Soil + horse waste @ 2.5% W/W Soil

10.69^l

T₁₄

Soil + biochar @ 1% W/W Soil

11.66^j

T₂₈

Soil + horse waste @ 5.0% W/W Soil

10.68^l,m

Tukey HSD

0.071