As

Cd

Co

Cr

Cu

Hg

Mn

Ni

Pb

Sb

Se

Zn

μg/.g

Off-season agriculture

Mean

<1

<5

<10

97.4

20.5

<0.03

306.2

<10

12.4

<1

<1

6.8

S.E.

22.7

1.5

40.1

2.0

0.4

Min.

<1

<5

<10

57.5

15.8

<0.03

213.8

<10

6.1

<1

<1

6.5

Max.

<1

<5

<10

202.0

25.5

<0.03

435.1

<10

20.1

<1

<1

7.0

Pluvial agriculture

Mean

1.12

<5

<10

106.5

13.5

1.17

582.5

10

3.5

<1

<1

31.8

S.E.

0.03

21.1

1.5

0.03

85.1

0.3

3.5

Min.

1.00

<5

<10

44.4

7.3

1.14

210.3

<10

3.3

<1

<1

20.3

Max.

1.00

<5

<10

193.0

18.6

1.20

810.2

10

3.7

<1

<1

40.5

AFNOR U44-41

100

2

30

150

100

1

-

50

100

-

-

300