1. Influence of no-tillage on soil moisture;Blevins;Agron. J.,1971
2. 1987 National survey conservation tillage practices;CTIC (Conservation Tillage Information Center),1988
3. Effect of sowing date and seeding rate on crop development and grain production of winter wheat;Darwinkel;Neth. J. Agric. Sci.,1977
4. An evaluation of various tilllage systems for wheat;Davidson,1973
5. Effects of no-tillage fallow as compared to conventional tillage in a wheat-fallow system;Fenster,1979