Table 5 Principal component analysis of wastewater-irrigated soil properties and plant characteristics

 Eigne value

13.992

3.650

2.593

1.694

1.071

 % variance

60.835

14.871

12.273

7.366

4.655

 Cumulative variance

60.835

75.706

88.979

95.345

100

Rotated component matrix (Varimax rotation)

 pH

.690

.342

.597

.224

.020

 EC

.882

.276

-.194

-.298

.138

 OC

.943

.260

-.102

-.085

.161

 Avl. N

.983

.113

.058

-.126

.032

 Avl. P

.981

.108

-.013

-.154

.040

 Avl. K

.018

.841

.521

-.077

.126

 Ex. Ca

.955

-.039

.181

.188

.136

 Ex. Mg

.915

.173

-.309

-.094

.168

 Ex. Na

.988

-.060

-.048

-.110

.076

 CEC

.975

.065

-.105

-.032

.183

 Ht

-.191

.028

.956

.120

-.187

 SG

.180

.696

-.066

.546

.425

 LA

-.731

.155

-.091

.411

.515

 N

.821

.489

.066

-.264

-.111

 P

.790

.193

.122

-.106

.560

 K

.862

.345

.182

-.223

.233

 Na

.975

.087

.129

-.141

-.079

 Ca

.212

.154

.799

-.500

.207

 Mg

.064

.947

.049

-.201

.237

 TC

-.286

.009

.002

.958

-.001

 SB

.673

.356

-.171

.012

.625

 RB

.246

.928

-.038

.211

-.182

 Na + /K

.934

.010

.249

.069

-.247