Belarus 1523, Operating Manual

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BELARUS- 1523/1523В /1523.3 /1523В.3 Aggregating the Tractor
209
Approximate calculation of the plough
operating width:
• Assess the type of the soil to be tilled.
• Find its specific resistance in Table 7-
23.
• Calculate an approximate operating
width for an ordinary shear plough by
the formula given below.
В=30/(а•Р), где
В – plough operating width, m;
а – ploughing depth, m;
Р – unit ploughing resistance, kN/m
2
.
Type of soil
Preceding cul-
tural practices
Ploughing resistance for soils P, kN/m
2
, at the tractor
speed v * = 5 km/h,
Soil texture
heavy clay-
loam
medium
light clay-
loam
sandy loam,
peat-boggy
Chernozem
soil
Winter-crop
stubble field
68 49 35 25
Perenneal
grass sod
86 57 45 31
Virgin soil, old
sod field
90 71 52 39
Soddy-
podzolic soil
Winter-crop
stubble field
66 47 34 26
Perenneal
grass sod
74 56 43 30
Virgin soil, old
sod field
92 71 50 40
Chestnut soil
Winter-crop
stubble field
69 47 36 22
Virgin soil, old
sod field
98 58 55 29
* Change in speed by 1 km/h changes the ploughing resistance by up to 1%.