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    Minimum Energy Tillage Systems

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    Author
    Cannon, Moody D.
    Stapleton, Herbert N.
    Issue Date
    1977
    Keywords
    Agriculture -- Arizona.
    Minimum tillage.
    
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    Publisher
    College of Agriculture, University of Arizona (Tucson, AZ)
    Abstract
    Eight years of research in minimum tillage methods included eighteen tests at three locations. Different configurations and depths with a chisel-lister and lister only were compared to conventional tillage with disk, moldboard plow, drag float and lister in a cotton-following- cotton cropping sequence. The effects of tillage methods on soil physical condition determined by soil penetrometer measurements showed no correlation. Sometimes there were significant increases; never were there reductions in yield from chisel-listing. In ii general, there was no advantage to running the chisels deeper than 14 inches beneath the level of the previous year's furrow. Draft-fuel testing showed that preplant tillage by chisel-listing required slightly more than ¼ as much fuel as conventional tillage, and time and labor requirements were proportional to fuel consumption. Because chisel-list tillage leaves the field in a rough and trashy condition, seed placement and covering are difficult, but the extra effort required is compensated through the reduction in fuel energy, time and labor.
    Series/Report no.
    Technical Bulletin (University of Arizona, Agricultural Experiment Station) No. 234
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