Canonical Correspondence Analysis (CCA)

Set

Variables

Inter-set correlation

Marginal

Conditional

VIF

Axis 1

Axis 2

λ1

λA

F-ratio

P-value

“Environment”

pH

0.594

0.020

0.31

0.31

7.47

0.001**

4.36

P

0.293

−0.106

0.09

0.14

3.47

0.008**

4.34

TN

−0.044

0.230

0.07

0.09

2.08

0.022*

3.02

K

0.230

−0.097

0.10

0.07

1.64

0.12ns

2.24

EC

0.225

−0.074

0.06

0.03

0.68

0.547ns

2.28

Na

−0.175

−0.042

0.04

0.06

1.4

0.215ns

1.98

Mg

−0.018

−0.026

0.02

0.04

1.15

0.313ns

2.91

Surrounding vegetation

−0.149

−0.015

0.05

0.04

1.2

0.288ns

2.09

“Management”

Crop establishment

0.254

−0.111

0.13

0.07

1.73

0.113ns

8.93

Fertility

0.331

0.035

0.13

0.09

2.52

0.038*

2.16

Irrigation

0.265

−0.087

0.11

0.07

1.86

0.141ns

6.09

Weed Control

0.071

0.231

0.07

0.07

1.15

0.121ns

1.53

Farming methods

0.137

−0.054

0.07

0.03

1.61

0.516ns

2.05

Crop spacing

−0.151

−0.057

0.06

0.08

2.01

0.032*

2.04

Cost for weed management

0.168

−0.014

0.04

0.03

0.72

0.674ns

1.70