This publication discusses the many types of fertilizers and soil amendments available for organic plant production. Fertilizer formulations, nutrient availability, and application practices for common organic products are also explained. While the primary focus is on building and maintaining fertile soil, information about how to protect soil and water resources in this context is included.
Dry farming vegetables: One farmer’s approach to building soil, conserving water and producing great tasting tomatoes
Jeannie Berg, with Your Hometown Harvests, grows heirloom fruits and vegetables in Monmouth, Oregon. She markets her produce through a 25-member CSA and several farmers’ markets including the Independence Riverview Market and the Portland South waterfront market. The land she is farming has class 1 soil and a few acres of water rights, but not enough water to expand irrigated...
A soil nitrate test measures the concentration of nitrate in the soil at a specific moment in time, including nitrate originating from organic inputs, fertilizer, and soil organic matter. This publication describes how to use in-season soil nitrate testing to adjust sidedress N fertilizer application rate to match crop N requirements.
This publication reflects over 30 years of vegetable production research conducted in the Willamette Valley. It is divided into three main sections: sustainable soil health; soil testing and nutrient management; and nitrogen management. The appendix includes detailed information on the technical aspects of fertilizer technology.
Recommends fertilizer rates for fine fescue seed in western Oregon based on soil test results for nitrogen, phosphorus, potassium, sulfur, micronutrients, lime, calcium, and magnesium.
Describes management practices for east of the Cascades that are essential to optimize green pea crop response to fertilizer inputs. These include soil pH, crop rotation, and inoculation; and recommendations for fertilizer placement and specific nutrients.
This publication is designed to assist growers and crop advisors in producing a high-quality crop while protecting the environment from excess nutrients. Contains information on how onions grow; timing and amount of crop nutrient uptake; keys to managing nitrogen efficiently; ways to monitor crop N status during the growing season; how to assess the need for P, K, S, and ...
Provides nutrient management information and recommendations for bush snap beans grown in western Oregon for processing or fresh market. Includes descriptions of plant nutrient deficiency with color photos, and information on optimum application rates, timing, and placement.
This is a nutrient management guide for sweet corn growers and agricultural professionals working with sweet corn growers.
Lorin Grigg grows onions and sweet corn under sprinkler irrigation in Quincy, Washington. In this publication, Grigg discusses his strategy for cover cropping to protect seedlings from windblown sand and reduce wind erosion.