Table 5 The correlation coefficient (r) between different phosphorus fractions and Olsen-P under different treatments.

From: Effects of the continuous use of organic manure and chemical fertilizer on soil inorganic phosphorus fractions in calcareous soil

Treatments

Coefficient of correlation

Ca2-P

Ca8-P

Al-P

Fe-P

O-P

Ca10-P

OM

0.991**

0.999**

0.938**

0.831*

0.522

0.642

CF

0.988**

0.995**

0.953**

0.846*

0.462

0.476

CK

0.967**

0.959**

0.842*

0.511

0.357

0.122

  1. *P ≤ 0.05 and **P ≤ 0.01.
Back to article page