Table 1 Soil’s physical and chemical characteristics of the experimental plot for hard yellow maize Marginal 28 T variety, under rainfed conditions, before the application of amendments.

pH

–

4.5

EC

mS∙m^-1

8

OM

g∙kg^-1

24

N

g∙kg^-1

0.9

P

g∙kg^-1

2.1

K

mg∙kg^-1

23.19

Ca⁺²

C mol( +)∙kg^-1

0.82

Mg⁺²

C mol( +)∙kg^-1

0.1

K⁺

C mol( +)∙kg^-1

0.06

Na⁺

C mol( +)∙kg^-1

0.03

Al⁺³

C mol( +)∙kg^-1

0.36

Exchangeable acidity

C mol( +)∙kg^-1

0.5

CECe

C mol( +)∙kg^-1

1.51

Sand

%

68.16

Silt

%

16.66

Clay

%

15.18