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Science in action to improve the sustainability of agriculture, natural resources, and food systems
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Topic: Soils & Fertility

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Impact of manure-derived fertilizers on bacterial community and antibiotic resistance genes in Washington red raspberry fields

Washington State is the number one producer of processed red raspberries in the nation. Raspberry growers in Whatcom County rely on dairy manure as a…

Impact of Biochar, Black Liquor, and Fly Ash Application to Soil on Productivity of Wheat in Eastern Washington

This project proposes to investigate application of four materials alone and in combination (biochar, lime, paper mill fly ash, and black liquor) for their potential…

Quantifying the Weed Seedbank Using Quantitative PCR and Soil Community Analysis

Quantification of  weed seedbanks is essential for the evaluation and improvement of integrated weed management systems by farmers and integral in the Sustaining Resources Grand…

Increasing legume nodulation for improved symbiotic nitrogen fixation

We have identified a gene from Sinorhizobium medicae that substantially increases nodulation of Sinorhizobium meliloti on barrel medic and Rhizobium leguminosarum on pea and increases…

Combined Soils and High Residue Farming Workshop and Summary Publication

An increasing number of Columbia Basin farmers and crop consultants are interested in building soil quality and high residue farming in irrigated cropping systems (2015…

Building soil quality, enhancing soil microbial function, and alleviating chlorosis in Concord grapes with inter-row cover crops

Leaf yellowing, or chlorosis, occurs on more than 50% of the Concord vineyards in central WA, resulting in significant reductions in vine size, uniformity, and…

Rapid sensing of dairy manure nutrients for precision applications in agricultural production

This research focuses on precise manure utilization on agricultural land, which addresses two of the BIOAg priorities: organic waste management and building soil quality. Excess…

Integrating manure-based amendments with pest control: Potential of predatory flies (Scathophagidae) as a secondary benefit of manure amendments, for early season control of spotted wing drosophila in red raspberry

Yellow dung flies, Scathophaga stercoraria are associated with dung of large mammals. They are predatory on other flies particularly drosophila and are attracted to red…

Strip tillage and cover cropping for enhanced water use efficiency in western Washington organic vegetable farms

Tillage is an important tool in organic systems for weed control, residue management, seedbed preparation, and regulation of spring soil temperature. As excessive tillage wastes…

Precision application of organic amendments for improved soil quality in replant orchards

During apple orchard renewal, Apple Replant Disease (ARD) and soil degradation can lead to inconsistent infill vigor and uneven fruit production. Brassica seed meal is…
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