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Table 1.

Average crop yield (X̅, t / ha) and coefficients of its variation (V, %) depending on crop rotation and fertilization level for 1992-2015.

Crop Indicators Fertilization levels
O1 O2 O3 O4
Winter wheat 3.67 4.22 3.94 4.53
3.60 4.12 3.87 4.38
V, % 25.4 23.1 18.4 19.9
23.5 22.4 19.0 20.9
Sugar beet 35.0 38.1 36.4 41.0
36.6 39.4 37.4 42.3
V, % 19.9 20.0 15.4 14.2
18.0 19.3 15.1 13.7
Maize for silage 27.4 29.9 28.3 31.0
28.1 30.1 28.7 31.6
V, % 22.0 21.2 16.9 17.6
20.7 20.1 17.4 17.7
Barley 3.22 3.30 3.24 3.92
3.27 3.32 3.19 3.88
V, % 21.1 19,8 14,9 15.8
19.9 19.6 15.5 16.3

Note: above and below the line, respectively, in crop rotations with black and green manured fallows.

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