Browse on keywords: legume soil structure
Search results on 06/18/13
1802. Elliott, L.F., R.I. Papendick, and D.F. Bezdicek. 1987. Cropping practices using legumes with conservation tillage and soil benefits.. IN: J.F. Power (ed.) The role of legumes in conservation tillage systems.
A review article covering examples from around the world as well as specific research from WA. Discusses the role of legumes in maintaining soil productivity, and the constraints on their use. Describes research with several rotations and several legumes in a wheat based system. Wheat yields following red clover were highest of any of the legumes. When any of the legumes was chemically killed, winter wheat yields planted into the residue declined dramatically. T: effect of Medicago on wheat yield; commonly planted legumes and their characteristics; effect of tillage, rotation, and N rate on wheat yield (WA); legume N production and water use (WA); residual soil water under various crops (WA).
6757. Stone, J.A. and B.R. Butery. 1989. Nine forages and the aggregation of a clay loam.. Ca. J. Soil Sci. 69:165-169.
Alfalfa rotations or conservation tillage were not effective in restructuring soils. Tried alfalfa, sweetclover, slender wheatgrass, timothy, reed canarygrass, crested wheatgrass, tall fescue, Austrian winter pea, and red clover. Mycorrhiza levels were not correlated with aggregation. Root developement was the main factor. Aggregation was greatest for reed canarygrass and sweetclover, and lowest for AW pea and timothy. T: aggregate stability, organic matter.