Production Systems

Organic Apple Price in Response to Crop Size Supplied to the Market

In this analysis, we study the organic apple price response to crop size supplied to the market. We use the sales data from November 10, 2003 to September 8, 2005, organized by the Wenatchee Valley Traffic Association, the most complete dataset available for WA apples. The apples are from both Wenatchee and Yakima, and the […]

Evaluating vegetable varieties for organic systems

Farmers in Washington are looking to diversify crops to meet demand for organic, local and direct market production. Two crops that can meet these needs are icebox watermelons and winter-grown greens. Icebox watermelons tend to be earlier maturing than picnic watermelon varieties, and thus offer farmers throughout Washington a means of producing high quality watermelons […]

Cover Crops for Weed Management in Organic and Transition Systems

Cover crops are a locally grown source of organic matter and nitrogen and a weed management tool. Despite these benefits, many organic farmers have not been able to work cover crops into their management systems. We are evaluating different cover cropping systems, to help organic farmers determine how to best use cover crops on their […]

Organic Seed Treatments

The new rules and standards of the USDA National Organic Program have increased the demand for organically produced seed, but have also raised concerns about losses due to both seedborne and soilborne pathogens because of the limited number of options available for organic seed treatment. This is compounded by a lack of unbiased scientific data […]

Organic Transition Rotations for Northwestern Washington

Two three-year rotations are being investigated for suitability for organic transition in northwestern Washington. Cover crop growth was greater and resulted in better weed suppression during 2004-05 than in 2003-04. Common chickweed was the major winter weed species, accounting for 90% of the total weed biomass during the first winter and 75% during the second. […]

Understory Management in Organic Tree Fruits and Other Woody Perennials

Weed control and fertility management have been identified as priority research needs by Washington organic orchardists. Mechanical weed control has been the standard practice, often with high cost and potential degradation of soil quality. Mulches can control weeds and improve tree growth and yield, and enhance codling moth mortality with entomopathogenic nematodes (EPN). Living mulches […]

Trends in Organic Agriculture in the PNW

The project supported the collection, compilation, analysis, and outreach for statistics regarding the organic sector in Washington State. This required cooperation with the certifiers who collect the data from growers. The primary certifier in the state is the WSDA Organic Food Program, with an estimated 95% of the certified farms. Oregon Tilth also certifies a […]

Weed Management in organic dryland spring wheat

Organic grain production in Washington State was limited to less than 2500 acres as of 2001, and has not been well represented in the university research system. This lack of attention by both growers and researchers has resulted in a serious knowledge gap, with no good guidelines available on how to manage weeds and other […]