Sub-region	Soil physico- chemical properties	R	R²	Correlation	Sub- region	Soil physico- chemical properties	R	R²	Correlation
Karary	pH	−0.4698	0.2207	−ve	Khor Omer	pH	−0.5191	0.2695	−ve
	EC	0.3868	0.1496	+ve		EC	0.3973	0.1578	+ve
	Clay	0.1412	0.0199	+ve		Clay	0.1966	0.0387	+ve
	Silt	−0.6572	0.4319	Moderate ?ve		Silt	0.2116	0.0448	+ve
	Sand	0.5891	0.347	Moderate +ve		Sand	−0.3897	0.1519	−ve
	SP	−0.3204	0.1027	−ve		SP	−0.0614	0.0038	−ve
	Na	−0.5075	0.2576	Moderate ?ve		Na	−0.0097	0.0001	−ve
	K	0.0265	0.0007	Weak +ve		K	−0.0933	0.0087	Weak ?ve
	P	−0.2006	0.0402	Weak ?ve		P	−0.1895	0.0359	Weak ?ve
	Ca	−0.4224	0.1784	Weak ?ve		Ca	0.6733	0.4533	Moderate +ve
	Mg	−0.6293	0.396	Moderate ?ve		Mg	0.586	0.3434	Moderate +ve
	N	−0.718	0.5155	Moderate ?ve		N	−0.4331	0.1876	Weak ?ve
	O.C	−0.5753	0.331	Moderate ?ve		O.C	0.2368	0.0561	Weak +ve