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        Jason 
          Haas, Laura Wulff, and Neil Collins admire their new soil tiller -  
          Tablas Creek Vineyard, Paso Robles 
        
          
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               The 
                "gadget" on the front of their tractor is used about 
                1-4 times/yr - depending on conditions - to knock down the cover 
                crop and till the soil. Cutting about 4-6" deep, the sensors 
                and articulated heads allow the tiller to avoid the vine rootstalks, 
                while still getting underneath the vines.  
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