Fall Fertilization for Spring Wheat Production in Direct Seed Annual Crop Rotations in the
Intermediate Rainfall Area of Washington. (4919)
Authors:
D.J. Tonks* - Washington State University
A.D. Esser - Washington State Unversity, Ritzville, WA
Abstract:
Two on-farm research projects were initiated in the fall of 2001 and repeated in 2002 and again in 2003, one, six miles north of Sprague WA, and the other, five miles south of Lamont, WA both located in the 300 to 360 mm rainfall area.
Treatments at both locations were fall fertilized with the low disturbance applicator (fall LD), spring fertilized with the low disturbance applicator (spring LD), and spring fertilized with high disturbance one or two pass fertilizer/seed system (spring HD). Spring wheat (Triticum aestivum L.) was seeded with a hoe-type conventional or no-till drill, depending on location. Nitrogen fertilizer applied in the fall with the LD applicator did not move past the first foot of soil by spring. Generally, there were no differences in wheat seedling establishment between treatments. At
Sprague, wheat yield and test weight were not different between treatments. Wheat protein was slightly greater for the spring HD treatment. At Lamont, wheat yield for fall LD and spring HD was greater than spring LD. There were no differences
among treatments for protein or test weight.
Speaker Information: Dennis Tonks, Washington State University, WSU Extension, Davenport, WA 99122; Phone: 509-725-4171; E-mail: [email protected]
Session Information: Wednesday, November 3, 2004, 4:00 PM-6:00 PM Presentation Start: 4:00 PM (Poster Board Number: 0910)