Improving Forage Quantity and Quality through Organic Fertilizer and No-Till Seeding in Western Washington: Final Report

This progress report documents research and outreach efforts to improve forage quantity and quality in established hay fields using organic fertilizer amendments and no-till seeding in western Washington. On-farm trials in San Juan and Pierce counties evaluated the effects of seeding perennial ryegrass and white clover into existing sod and applying varying nitrogen rates through organic fertilizers. Preliminary biomass data suggest forage response to fertilizer treatments, with analysis ongoing.

Additional trials tested five legume species under fall no-till establishment to identify optimal species and planting timing, with spring plantings planned following COVID-related delays. Outreach included a field webinar and coordination with Conservation Districts to establish demonstration strips on cooperating farms. Early evaluation results indicate increased producer knowledge and high likelihood of adopting improved fertilizer, testing, and no-till practices.