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4152. McCall, M.A. and H.M. Wanser. 1924. The principles of summer fallow tillage. WA Agr. Expt. Sta. Bull. #183.
This is the results of experiments carried out at the Adams station near Lind, WA, in the 15" rainfall zone. It discusses moisture and the moisture - nitrate accumulation relationship. No discussion of OM or erosion related to summer fallow is included. Nitrate accumulation is dependent on the maintenance of suitable moisture and temperature conditions." "Early spring plowing gives the largest accumulation of nitrates. Disking is less efficient at promoting nitrification."