|Hang, An - WASHINGTON STATE UNIV.|
Submitted to: American Society of Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: September 25, 2006
Publication Date: September 25, 2006
Citation: American Society of Agronomy Abstracts, 2006 International Meetings, Indianapolis, IN Nov 12-16, 2006, on CD, © Copyright 2006, ASA-CSSA-SSSA. Technical Abstract: Field experiment was conducted on Shano silk loam soil at Othello Research Farm of Washington State University. Soil sample was taken and analyzed for N, P, K, S, B and Zn. Fresh cut wheat stubble was disked and rototilled into the ground before seedbed preparation. Fertilizers were added at 112 kg/ha N and 56 kg/ha P2O5 before herbicide application. Trifluralin was applied at the rate of 1.12 kg a.i. per ha and was incorporated into the top 7.5 cm to control weeds. The ground was then packed and pre-irrigated. Four winter canola Inca, Rapier, Athena and Ericka were seeded on Sep 2, 2005 with 4 replications. All plots were irrigated twice before the winter. All cultivars were germinated in 7 days after planting. Inca was slower in growing than the other 3 lines. This winter was so dry and no snow cover when the temperature reaching as low as-12 C. All cultivars survived the winter very well. CV. Rapier was set back behind other 3 cvs. Irrigation treatment was set on May 3 when the full canopy was developed. Amount of water applied and soil moisture will be monitored until the pods turn brown. Plant will be harvested at each level of water application for yield, oil concentration and soil N residue.