Biologically Intensive and Organic Agriculture header
Navigation bar

Washington State University
7612 Pioneer Way
Puyallup, WA 98371-4998
Tel. (253) 445-4626
FAX (253) 445-4579





Browse on keywords: grains OR

Use a different search term

Search results on 12/01/15

5500. Radosovich, Stephen. 1990. presentation at the Farming for Profit and Stewardship Conference, Vancouver, WA Mar. 2-3, 1990. Forest Science Lab, Oregon State Univ., Corvallis, OR 97331.
Dr. Radosovich, a researcher at OSU, described work with non-chemical weed control in ryegrass. He is exploring the effect of planting geometry on weeds. A square arrangement was almost 10 times more competitive than a rectangle for the crop. Tilling the soil at night changed the weed spectrum and the % germination, due to phytochrome response. Light quality can be manipulated by crop or residue canopy to alter the amount of red light hitting the soil. This might affect plant competitiveness. Use plants as a "green filter". Plant a cover crop early, filter out red light, plant the crop, frost will kill the cover crop. Also, seeding at night, less weed germination triggered, and moisture comes up in deep furrows. Need to look at light intensity, light quality, and light reflectance, especially the red:far red ratio. This can also affect insect behavior.

Use a different search term


Return to Top of Page

Updated March 31, 2004


Contact us: 253-445-4626 | Accessibility | Copyright | Policies
CSANR, Washington State University, 7612 Pioneer Way,Puyallup, WA 98371-4998 USA

Economic button Social button Environment button