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Table 3.27  Dynamics of major types of vegetable contamination with nitrates in the period 1986- 1998

Crop

Number of samples exceeding the permissible level, %

 

1986

1987

1988

1989

1990

1991

1992

1994

1998

Potato

7.5

16.0

20.0

9.1

6.8

4.3

5.0

1.1

0.8

Cabbage

50.1

31.0

18.0

13.8

9.3

6.0

6.6

2.6

1.2

Carrot

13.1

6.0

15.0

8.9

6.1

7.9

6.4

0

0.5

Tomato

6.5

6.5

-

5.1

1.0

1.0

2.2

0

0

Cucumber

20.6

38.0

17.0

14.5

12.4

13.3

12.8

5.9

2.4

Table beet

21.0

25.0

34.0

36.8

25.1

20.6

21.8

12.8

4.1