I have considerable experience with soil managment, from collage to selling all types of tillage tools as a Case Dealer. Be very careful with rotary tillage practices. We sold Howard Rotovators back in the late 60s and early 70s. I built toolbars to mount Case K160 unit planters onto the Rotovators to make planting corn a one trip operation. And yes we have stone!! Limestone bedrock, under soils ranging from honyeoway (sp)loam to nasty clay, to gravel. Rorary tillage will trowel an extreamly tight soil zone which will block moisture and root migration. We always incorperated deep shank tillage with rotary seedbead preperation. Plowing at only 6" will also cause extream soil compaction close to the soil surface causing lack of deep root development and much increase soil erosion. On top of that pest and weed control has to be ramped up , and decomposition of shallow residue will compete with your crop for nutrients, especially nitrogen. You need a root zone of app 12" to max your crop yields, over a sub structure that allows moisture to migrate in during wet spells and up during drought. If you put 6" of rich topsoil on a concrete slab, and depent on mother nature to nurture it, what will your crop do??? Loren, the Acg.
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