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Saving energy through use of herbicides instead oi mechanical cultivation or hand labor has been proven many times according to the August edition of Agri-News but the statistics involved often are interesting. Dr. John Nalewaja, weed scientist at North Dakota State University compared energy inputs and outputs of various weed control systems and found that it took 56,000 kilocalories per acre to control weeds in corn using mechanical cultivation alone.
With atrazine, a widely
94.3%