Table 7 Results of the collected GCPs from the study areas for assessing the effects of CRC on soil chemical characteristics from 2015 to 2022.

From: Monitoring the impacts of crop residue cover on agricultural productivity and soil chemical and physical characteristics

Soil properties

Case study area 1

Case study area 2

2015

2019

2022

2015

2019

2022

EC

0.59

0.61

0.63

0.49

0.50

0.51

PH

7.11

7.09

7.09

6.78

6.80

6.81

Na

0.56

0.57

0.58

0.53

0.53

0.54

Mg

1.68

1.75

1.76

1.33

1.35

1.39

HCO3

3.73

3.78

3.80

2.35

2.58

2.57

K

0.13

0.12

0.12

0.11

0.12

0.12

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