Journal article
Soil properties governing soil erosion affected by cropping systems in the U.S. Pacific Northwest
Soil & tillage research, Vol.111(2), pp.168-174
01/2011
Handle:
https://hdl.handle.net/2376/114018
Abstract
▶ Long-term dryland alternate no-tillage cropping systems. ▶ Their effects on soil physical properties, surface characteristics and soil erodibility. ▶ Soil aggregates, wetness, strength, roughness, crusting, residue cover and biomass. ▶ No-tillage cropping systems will reduce soil erosion in the inland Pacific Northwest.
In the low-precipitation zone (<300mm annual precipitation) of the inland US Pacific Northwest, no-tillage spring cereal rotations are being examined as alternatives to the traditional winter wheat–summer fallow rotation to control wind erosion. There is limited information, however, regarding the effects of no-tillage cropping systems on soil physical properties and surface characteristics that govern wind erosion in this semiarid region. The objective of this research was to characterize soil aggregates, wetness, strength, roughness, crusting, and crop residue cover and biomass of a silt loam that had been subject to various crop rotations for 11 years in east-central Washington. Crop rotations examined included no-tillage spring barley–spring wheat (NTSB/SW), no-tillage spring wheat–chemical fallow (NTSW/CF), and winter wheat–summer fallow (WW/SF). Soil physical properties were measured in spring 2006 after sowing wheat in the NTSB/SW rotation and in late summer 2006 after sowing winter wheat in the WW/SF and NTSW/CF rotations. In spring, the NTSB/SW and NTSW/CF rotations were characterized by a wetter soil as compared with the WW/SF rotation. In late summer, the NTSB/SW rotation was characterized by a soil surface with more standing stubble and greater crust cover and soil strength as compared with the WW/SF and NTSW/CF rotations. Our results suggest that spring-sown cereal and chemical fallow cropping systems result in wetter soils in spring and retain more surface residue in the late summer that will reduce the risk for wind erosion as compared with the traditional WW/SF rotation in the Pacific Northwest.
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Details
- Title
- Soil properties governing soil erosion affected by cropping systems in the U.S. Pacific Northwest
- Creators
- Guanglong Feng - Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, No.40-3 South Beijing Road, Urumqi 830011, ChinaBrenton Sharratt - USDA-Agricultural Research Service, Pullman, WA 99164, United StatesFrank Young - USDA-Agricultural Research Service, Pullman, WA 99164, United States
- Publication Details
- Soil & tillage research, Vol.111(2), pp.168-174
- Academic Unit
- Crop and Soil Sciences, Department of
- Publisher
- Elsevier B.V
- Identifiers
- 99900548599901842
- Language
- English
- Resource Type
- Journal article