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Joint International Conference on Long-term Experiments ...

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Rye Yield (t/ha)<br />

Potato yield (t/ha)<br />

5.5<br />

5.0<br />

4.5<br />

4.0<br />

3.5<br />

3.0<br />

2.5<br />

2.0<br />

1.5<br />

1.0<br />

0.5<br />

0.0<br />

50<br />

45<br />

40<br />

35<br />

30<br />

25<br />

20<br />

15<br />

10<br />

5<br />

0<br />

1931<br />

Maximum Minimum Mean<br />

1935<br />

1939<br />

1943<br />

1947<br />

1951<br />

1955<br />

1959<br />

1963<br />

1967<br />

1971<br />

1975<br />

1979<br />

1983<br />

1987<br />

Figure 1: Rye yields in the crop rotati<strong>on</strong> experiment<br />

Maximum Minimum Mean<br />

1991<br />

1995<br />

1999<br />

2003<br />

1931<br />

1935<br />

1939<br />

1943<br />

1947<br />

1951<br />

1955<br />

1959<br />

1963<br />

1967<br />

1971<br />

1975<br />

1979<br />

1983<br />

1987<br />

1991<br />

1995<br />

1999<br />

2003<br />

Figure 2: Potato yield in the crop rotati<strong>on</strong> experiment<br />

210

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