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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Issue 40 (1960) → Subsoiler for Improving Survival in Hardpan Areas

Subsoiler for Improving Survival in Hardpan Areas

During the spring of 1959, while tree-planting equipment was being field tested on the Dixie National Forest, a problem cropped up which may be troublesome elsewhere. Although the Holt Plow was quite successful in digging contour trenches for erosion control and competition removal, the colter on the planting machine would not dig into the clay hardpan in the bottom of the trenches for more than 4 inches. This was not deep enough to plant the trees. At the suggestion of the tractor company, we tried a subsoiler or panbreaker in an effort to break the hardpan sufficiently to allow machine planting.


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Author(s): H. L. Ketchie

Publication: Tree Planters' Notes - Issue 40 (1960)