Mississippi Agricultural & Forestry Experiment Station

Impact of Imported Fire Ants on Mississippi Soils

Figure 13
Figure 13. Scanning electron micrograph of the surface of the wall lining below a mound on a Balbis sandy loam (Site D) magnified 3200X showing fine material on surface of lining. Line scale is 10 micrometers.


Figure 14
Figure 14. Scanning electron micrograph of a fracture surface in an undisturbed A horizon of a Vaiden silt loam magnified 3600X showing fine material coating mineral grains. Line scale is 10 micrometers.


Figure 15
Figure 15. Scanning electron micrograph of the edge of a wall lining in the B horizon below a mound on the Malbis sandy loam (Site D) magnified 1800X showing distinct layer of material forming the wall lining. Line scale is 10 micrometers.


Figure 16
Figure 16. Scanning electron micrograph of the broken edge of the crust of a mound on an Alligator clay (Site F) magnified 54X showing coherent structure. Line scale is 100 micrometers.


Figure 17
Figure 17. Photomicrograph of the crust of a mound on a sandy loam (Site B) magnified 14X showing degraded crust structure.


Figure 18
Figure 18. Overhead view of a mound immediately after a brief shower showing erosion of crust resulting in open channels.