Submitted to: ASAE Annual International Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 8/29/2001
Publication Date: N/A
Technical Abstract: The conventional tillage winter wheat-summer fallow cropping system, that predominates the Pacific Northwest Inland area, is considered responsible for much of the annual surface soil erosion. Researchers and growers are attempting to develop direct-seeding annual cropping systems to reduce soil erosion. A four-year no-till annual cereal experiment was conducted on a 18 to 25 % hillslope with Walla Walla silt loam (coarse- silty, mixed, superactive, mesic Typic Haploxeroll) near Pendleton, Oregon. Forty-six neutron probe access tubes were installed across the slope to monitor seasonal soil moisture changes. Surface runoff was measured using two flumes installed at the foothill. Over the four-year experiment period, the flumes recorded no surface runoff. Water movement and storage in soil profile, and crop yield and water use efficiency were analyzed.