Browse on keywords: yields organic matter
Search results on 06/19/13
2617. Hill, K.W.. 1954. Wheat yields and soil fertility on the Canadian prairies after a half century of farming.. Soil Sci. Soc. Am. Proc. 18:182-184.
T: soil properties X rotation; wheat yields X time
3471. Kaiser, V.G.. 1962. A lesson in farming from an old agriculture.. V. Kaiser papers, box 1, folder 80.
Describes wheat fallow fields in Turkey and Iran farmed over 3000 years; low yields (6-7 bu/ac), no inputs, no erosion - stable system; intensified production can cause massive problems and requires better soil conservation and organic matter management.