Browse on keywords: crop rotation WA weeds
Search results on 04/27/18
7753. Young, Frank. 1989. Integrated pest management project update.. Paper presented at WA state weed conference, Nov. 13,1989.
This paper briefly describes the IPM weed study underway near Pullman, WA. This experiment uses field size plots for several rotation, tillage, and weed control treatments. Four years of research have been completed. Generally, the yield of spring cereals has not been affected by either weed management levels or tillage systems. Yields of spring peas were 17% greater with maximum weed management compared to the minimum level. Only three of the minimum tillage systems left sufficient residue cover to meet the 30% SCS requirement. However, all reduced tillage systems left more than 30% residue during the critical winter months. Yields of peas under conservation tillage were 13% greater than with conventional tillage, indicating the ability to reduce erosion potential with this crop and not suffer a yield penalty. No-till seeding has been successful either after spring wheat or spring peas, but not after the high residue of winter wheat.
8608. Young, F.L.. 1990. IPM systems research.. unpublished handout from USDA-ARS Weed Research Unit, Pullman, WA 99164.
The IPM Weeds study near Pullman, WA uses two 3-yr crop rotations, two tillage systems, and three weed management (herbicide) levels. Spring pea average yields after 3 yr were higher with chisel plow than with moldboard plow, slightly responsive to increased weed management level, and highest with maximum weed management/chisel plow combination.