http://hdl.handle.net/10150/635716 2026-04-22T17:56:10Z http://hdl.handle.net/10150/650388 Journal of Range Management, Volume 21, Number 1 (January 1968) Complete digitized issue. 1968-01-01T00:00:00Z http://hdl.handle.net/10150/647878 The Use of Woodchips and Nitrogen Fertilizer in Seeding Scab Ridges Klomp, G. J. A depleted scab ridge in northeastern Oregon was treated with woodchips and nitrogen, and seeded with a mixture of hard fescue, timothy, and pubescent wheatgrass. On the deeper soils, plots receiving 1 inch woodchips disked in plus 300 lb N averaged 2,457 lb air-dry herbage/acre over a 7-year period. Control plots average 1,973 lb/acre and those receiving woodchips, but no N 1,434 lb/acre. On the shallow soils similar treatments yielded 1,193, 688, and 528 lb/acre, respectively. At 1 inch chips and 300 lb N/acre, whether the chips were disked into the soil was relatively unimportant. At 0.5 inch chips and 150 lb N/acre disking lowered yields from 1,288 lb/acre (not disked in) to 673. With time, pubescent wheatgrass increased on the deeper soils and remained constant on the shallower. Hard fescue increased and timothy decreased markedly on both soils. 1968-01-01T00:00:00Z http://hdl.handle.net/10150/647867 Soil Moisture Response to Spraying Big Sagebrush with 2 4-D Tabler, R. D. Spraying big sagebrush with 2,4-D reduced the rate of soil moisture withdrawal. About 75% of the difference in total moisture depletion occurred within the 3- to 6-ft soil depth; an opposite effect in the second foot indicated that the increase in grass herbage production is most strongly reflected in that zone. Total evapotranspiration losses from the 0- to 6-ft soil profile were reduced about 14% over the 4-month growing period the second year after spraying. 1968-01-01T00:00:00Z http://hdl.handle.net/10150/647836 Productivity of a Soil Biosequence of the Fescue Prairie-Aspen Transition Lutwick, L. E.; Dormaar, J. F. Grassland soils have some quality that enables plants to respond to P fertilizer. This quality deteriorates when poplar trees advance on rangelands; it is completely destroyed when coniferous trees become the dominant vegetation. Clearing of trees and seeding of grass returns some grassland character to soil. If soil organic P is considered an index, NP fertilizers along with the grass are expected to hasten the return of the grassland character. 1968-01-01T00:00:00Z