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© 2013 Chad Lee, Univ. of Kentucky

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Presentation on theme: "© 2013 Chad Lee, Univ. of Kentucky"— Presentation transcript:

1 © 2013 Chad Lee, Univ. of Kentucky
Soil Compaction, 2013 1/18/2019 © 2013 Chad Lee, Univ. of Kentucky

2 Compaction Problems in Corn
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

3 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Surface Compaction 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

4 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Surface Compaction 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

5 Subsurface Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

6 Subsurface Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

7 Strange Leaf Symptoms linked to Subsurface Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

8 Subsurface Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

9 Smearing on the sidewall
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

10 Field Problems © 2012, Chad Lee, Univ. of Kentucky
Stunted Corn May 18, Daviess County. Some of the roots appear to have been clipped by grubs. The layering of the soil indicates minimal compaction. Photo: Clint Hardy 1/18/2019 Field Problems © 2012, Chad Lee, Univ. of Kentucky

11 K Deficiency – Subsurface Compaction in this Area
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

12 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Sidewall Compaction 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

13 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Sidewall Compaction 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

14 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Sidewall Compaction 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

15 Shallow Seed Placement – Resulted in K Deficiency
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

16 K Deficiency from Shallow Seed Placement
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

17 K Deficiency – Shallow Planting
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

18 Compaction can lead to this.
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

19 Compaction Problems in Soybean
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

20 Very “Mild” Subsurface Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

21 Yellow Areas have “Mild” Subsurface Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

22 Soybean with Excellent Nodules
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

23 Soybean – No Nodules where Compaction Occurred
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

24 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Sidewall Compaction 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

25 Yellow Soybeans are from Sidewall Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

26 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Severe K Deficiency 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

27 Subsurface Compaction Resulting in the Severe K Deficiency
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

28 Subsurface Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

29 Yellow Soybeans from Subsurface Compaction
1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

30 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Soil Compaction Working the field “one day” too early is the most common way to get compaction. Tillage. Driving heavy loads across the field. 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

31 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
Mud on the press wheels implies a wet soil for planting – high risk for sidewall compaction. 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

32 Idealized Kentucky Soil
Macropores 25% Soil Minerals (Silt loam) 47% Micropores 25% Organic Matter 3%

33 Worst tools for compaction
Disk Moldboard plow Anything that forms a smear 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

34 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky
A Deep Ripper May Help Be sure the ripper will get below the compaction layer Rip when the soil is dry Use narrow shanks Minimize disturbance of the soil surface 1/18/2019 © 2011, 2012, 2013 Chad Lee, Univ. of Kentucky

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