Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

Environmental Systems Research

Table 8 Correlation table for some soil properties

	Clay	pH	exAc	exAl	OC	Mehl 3P	Bra P	Fe_ox	Al_ox	Fe_d	PSC	DPS	P_ox
pH	− 0.66*
exAc	0.51	− 0.90**
exAl	0.65*	− 0.72**	0.79**
LR	0.81**	− 0.88**	0.94**	0.71**
OC	0.83**	0.88**	− 0.94**	− 0.79**
M 3P	− 0.82**	0.81**	− 0.86**	− 0.86**	0.93**
Bra P	− 0.80**	0.81**	− 0.84**	− 0.54	0.90**	0.96**
Fe_ox	0.80**	− 0.79**	0.81**	0.81**	− 0.88**	− 0.85**	− 0.80**
Al_ox	0.83**	− 0.85**	0.93**	0.93**	− 0.97**	− 0.95**	− 0.94**	0.86**
F_ed	0.99**	− 0.85**	0.92**	0.92**	− 0.96**	− 0.92**	− 0.90**	0.90**	0.97**
PSC	0.85**	− 0.86**	0.92**	0.92**	− 0.93**	− 0.95**	− 0.93**	0.93**	0.98**	0.98**
DPS	− 0.88**	0.73**	0.81**	− 0.81**	0.87**	0.91**	0.89**	− 0.89**	− 0.93**	− 0.87**	− 0.95**
P_ox	− 0.91**	0.75**	− 0.82**	− 0.82**	0.88**	0.92**	0.88**	− 0.88**	− 0.94**	− 0.88**	− 0.95**	0.99**
CEC	− 0.67*	0.66*	− 0.78**	− 0.78**	0.84**	0.87**	0.77**	− 0.87**	− 0.83**	− 0.91**	0.86**	0.83**	0.86**

LR lime requirements, Mehl 3P Mehlich 3P, Bra P Bray 1 P, Ols P Olsen P, LR lime requirement, exAl exchangeable Al, exAc exchangeable Acidity, OC organic carbon, Alox, Feox, and Pox oxalate extractable Al, Fe, and P, respectively, PSC phosphorous sorption capacity, DPS degree of P saturation, Fed citrate dithionite bicarbonate extractable Fe
*Significant at 0.05 and **Significant at 0.01 probability levels, respectively