C

N

P

Ca

Mg

K

Technique

CRT

45b

5b

4b

5b

3b

4b

NoCRT

106a

11a

8a

9a

5a

7a

P value

0.04

0.006

0.02

0.01

0.01

0.02

Sites

Mpessoba

75

7

4

8

4

5

Flola

76

8

6

7

4

6

P value

0.97

0.98

0.06

0.6

0.62

0.76

Year

2016

112a

10a

7

10a

5a

7a

2017

39b

5b

4

5b

3b

3b

P value

0.02

0.01

0.12

0.008

0.003

0.01