Correlation coefficient (r)

Wet Season

Correlation coefficient (r)

Dry Season

Growth and

yield components

Plant height

Productive tillers hill⁻¹

Above ground biomass

Grain yield

Harvest index

0.454

0.557*

0.679**

−0.487*

−0.345

0.398

0.648*

0.648*

−0.581*

−0.438

Soil properties

Soil porosity

Soil organic carbon

T-N

Soil pH

Soil Eh

Available P

Available S

Ex. K₂O

Free iron oxide

−0.786***

−0.05

−0.042

−0.359

−0.788***

−0.264

−0.589**

0.463

−0.687**

−0.568*

−0.009

−0.057

−0.470

−0.689**

−0.175

−0.668**

0.517*

−0.835***