Agriculture Reference
In-Depth Information
TABLE 9.5
Yields in Seven-Field Crop Rotation with Different Systems of Primary Soil
Tillage for 1977-1990
Field Crops, Mg/ha
Winter Wheat
Sugar Beet
a
Maize for Grain
Moldboard
Plow
Noninversion
Tillage
Moldboard
Plow
Noninversion
Tillage
Moldboard
Plow
Noninversion
Tillage
4.56
4.70
46.0
45.3
a
7.3
7.3
LSD
05
0.73
3.33
0.79
Source:
Adapted from Boaghii, IV, and Bulat, L. 2013. Primary soil tillage in the crop-rotation for main
field crops in Moldova. In: Dent, DL (editor).
Soil as World Heritage.
Springer, Dordrecht,
pp. 273-282.
a
1984-1990.
TABLE 9.6
Stocks of Soil Organic Matter (or Carbon) under Different Methods
of Primary Soil Tillage in Crop Rotation: Average of Seven-Field
Crop Rotation, for 0-20 cm Soil Layer
Stocks of Soil Organic Matter, Mg/ha
Moldboard Plow
Noninversion Tillage
Noninversion
Tillage
Moldboard Plow
Total
Losses
Annual
Losses
Total
Losses
Annual
Losses
1977
1990
1977
1990
62.0
60.7
64.3
63.5
1.3
0.093
0.8
0.057
Source:
With kind permission from Springer Science+Business Media:
Soil as World
Heritage
, Dent, DL (editor), Primary soil tillage in the crop-rotation for main field
crops in Moldova, 2013, pp. 273-282, Boaghii, IV, and Bulat, L.
As in the other long-term experiments with crop rotations and continuous cul-
tivation, high crop yields are masking the true state of soil fertility. Perhaps the
increased yields of most crops during the initial stages of the industrial agricultural
intensification also masked the state of soil degradation.
9.3.4 F
fertilization.
In the other long-term field experiments at Selectia RIFC, 12 systems of fertiliza-
tion are studied using six-field crop rotation in which row crops comprise half of the
cropping. More details about this experiment are given in a report by Boincean et
al. (2013b). The data in Table 9.7 show mean yields for winter wheat, sugar beet, and
maize for 1991-2011 under four levels of fertilization.
