soil compaction in alfalfa fields l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Soil Compaction in Alfalfa Fields PowerPoint Presentation
Download Presentation
Soil Compaction in Alfalfa Fields

Loading in 2 Seconds...

play fullscreen
1 / 37

Soil Compaction in Alfalfa Fields - PowerPoint PPT Presentation


  • 519 Views
  • Uploaded on

Soil Compaction in Alfalfa Fields Ronald T. Schuler, Professor Extension Agricultural Engineer Biological Systems Engineering University of Wisconsin-Madison Soil Compaction Causes include combinations of: Wheel Traffic Tillage Precipitation Types Surface Subsoil Loam soil by volume

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Soil Compaction in Alfalfa Fields' - paul


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
soil compaction in alfalfa fields
Soil Compaction in Alfalfa Fields

Ronald T. Schuler, Professor

Extension Agricultural Engineer

Biological Systems Engineering

University of Wisconsin-Madison

soil compaction
Soil Compaction
  • Causes include combinations of:
    • Wheel Traffic
    • Tillage
    • Precipitation
  • Types
    • Surface
    • Subsoil
loam soil by volume

Loam soil by volume

Non-compacted Compacted

compaction issues
Compaction Issues
  • Tires
    • Size
    • Inflation pressure
    • Tire design, radial vs. bias
  • Machinery
    • Avoid wet soil
    • Wheel alignment
    • Machine selection
    • Machine weight
compaction issues7
Compaction Issues
  • Tires
    • Size
    • Inflation pressure
    • Tire design, radial vs. bias
  • Machinery
    • Avoid wet soil
    • Wheel alignment
    • Machine selection
    • Machine weight
contact area size diameter firestone

Contact Area-Size-Diameter(Firestone)

Tire Size Tire Dia. Area(in2)

Radial TiresFlat 3”Sinkage

18.4R34 65.1 320 720

18.4R38 69.0 340 740

18.4R42 73.0 350 760

18.4R46 77.0 365 780

Bias Tires

18.4-34 65.4 284 653

18.4-38 69.3 300 675

contact area size width firestone

Contact Area-Size-Width(Firestone)

Tire Size Tire WidthArea(in2)

Radial TiresFlat 3”Sinkage

16.9R38 16.9 255 660

18.4R38 18.4 340 740

20.8R38 20.8 390 870

Bias Tires

16.9-38 16.9 252 629

18.4-38 18.4 300 675

compaction issues10
Compaction Issues
  • Tires
    • Size
    • Inflation pressure
    • Tire design, radial vs. bias
  • Machinery
    • Avoid wet soil
    • Wheel alignment
    • Machine selection
    • Machine weight
slide12

Inflation pressure-slight tire bulge with the proper pressure on radial ply tires

6 psi

18 psi

Bulge

compaction issues14
Compaction Issues
  • Tires
    • Size
    • Inflation pressure
    • Tire design, radial vs. bias ply
  • Machinery
    • Avoid wet soil
    • Wheel alignment
    • Machine selection
    • Machine weight
tractor manufacturer recommendations tire size 18 4 34 pressures psi

Tractor Manufacturer RecommendationsTire Size – 18.4-34 Pressures-psi

Axle Load (lbs) Radial Bias

5500 6 16

6000 7 16

6500 7 16

7000 8 16

7500 9 16

8000 10 16

8500 12 16

9000 13 16

9500 14 16

10000 15 16

compaction issues18
Compaction Issues
  • Tires
    • Size
    • Inflation pressure
    • Tire design, radial vs. bias
  • Machinery
    • Avoid wet soil
    • Wheel alignment
    • Machine selection
    • Machine weight
impact of soil moisture on compaction depth and sinkage

Impact of soil moisture on compaction(depth and sinkage)

0

4

8

12

16

20

24

28

Hard dry soil Normal Wet soil

Depth,

In.

compaction issues20
Compaction Issues
  • Tires
    • Size
    • Inflation pressure
    • Tire design, radial vs. bias
  • Machinery
    • Avoid wet soil
    • Wheel alignment
    • Machine selection
    • Machine weight
slide21

Wheel alignment-harvester and wagon

Wheels should follow in same track

compaction issues25
Compaction Issues
  • Tires
    • Size
    • Inflation pressure
    • Tire design, radial vs. bias
  • Machinery
    • Avoid wet soil
    • Wheel alignment
    • Machine selection
    • Machine weight
slide33

1 Mower-conditioner-pull or self-propelled2 Mower conditioner width, feet3 Rake-to rake, merge or do not rake two windrows together4 Area covered by wheel traffic if uniformly distributed5 T-M/A – ton miles per acre

System Comparisons-three cuttings per year

Type1 Width2 (ft) Rake3 Area4 T-M/A5

Pull 13 None 4.0 50

Pull 16 None 3.4 44

Pull 13 Rake 3.2 35

Pull 16 Rake 2.7 33

Self-Prop 16 Rake 3.1 32

Self-Prop 16 Merge 3.0 32

Pull 13 Merge 3.4 37

Self-Prop 13 Merge(Dbl) 2.8 27

Self-Prop 16 Merge(Dbl) 2.3 32

compaction issues34
Compaction Issues
  • Tires
    • Size
    • Inflation pressure
    • Tire design, radial vs. bias
  • Machinery
    • Avoid wet soil
    • Wheel alignment
    • Machine selection
    • Machine weight
tractor ballasting criteria
Tractor ballasting criteria

Towed Load wt. vs. Max.Speed

Towing machine wt. mph

1 to 1 20

2 to 1 10

More than 2 to 1 Do not tow

concluding remarks
Concluding Remarks
  • Select appropriate tire
  • Use proper tire pressure
  • Align wheels
  • Reduce traffic of large equipment
  • Use safe towing machine weight