Abstract: The purpose of this guide is to summarize current information on canola growth and fertilizer requirements. Canola is a relatively new crop to the Pacific Northwest and little fertility research has been conducted in this region. The information contained in this guide is intended to serve as a reference until the results of ongoing, local research are available. Canola is distinct from wheat in terms of growth habit, nutrient uptake, and nutrient removal in the seed. According to published research and fertilizer recommendations, canola requires more nitrogen and sulfur than wheat to achieve the same yields. Soil test-based requirements for phosphorus and potassium are similar to wheat, but boron requirements are higher. Because canola plant residue is higher in nitrogen and phosphorus than wheat straw, cycling of nutrients from residue to the subsequent crop may be an important rotational benefit of canola.
Dryland Winter Wheat Fertilizer Guide (EB1987E)
Abstract: Nutrient management is essential to the economical production of high-yielding, high-quality crops, and to preserving soil, air, and water quality.
Hard Red Spring Wheat Nitrogen and Protein Management Guide (pdf)
Abstract: This guide reviews the basic principles governing hard red spring wheat yield and protein responses to nitrogen and presents an abbreviated method for calculating nitrogen fertilizer to meet yield and protein goals.
Hard Red Winter Wheat Nitrogen and Protein Management Guide (pdf)
Abstract: This guide presents an abbreviated method for calculating nitrogen fertilizer rates to meet hard red winter wheat yield and protein goals, and reviews the basic principles governing hard red winter wheat yield and protein responses to nitrogen.
Hard White Spring Wheat Nitrogen and Protein Management Guide (pdf)
Abstract: This guide presents an abbreviated method for calculating nitrogen fertilizer rates to meet hard white wheat yield and protein goals, and reviews the basic principles governing hard white wheat yield and protein responses to nitrogen.
Management of Urea Fertilizer to Minimize Volatilization (EB173) (pdf)
Abstract: Urea (46-0-0), first introduced in 1935, is now the primary source of dry nitrogen (N) fertilizer in the U.S. due to its relatively high N content, ease of handling, and price. Although ammonium nitrate (34-0-0) may be superior in some situations to urea, due to liability concerns it is no longer available in many regions of the U.S.
Nitrogen Management for Hard Wheat Protein Enhancement (PNW578)
Abstract: Managing nitrogen to produce both high yields and acceptable protein of hard winter or spring wheat, especially in high rainfall and irrigated systems, has been frustrating for Pacific Northwest growers and those who serve them in an advisory capacity.
Nutrient Management Guide for Dryland and Irrigated Alfalfa in the Inland Northwest (PNW0611)
Abstract: Nutrient management is necessary to produce high-yielding, high-quality alfalfa economically, while at the same time preserving soil, air, and water quality.
Phosphorus Fertilization of Late-Planted Winter Wheat in No-Till Fallow (PNW631)
Abstract: Wheat growers interested in experimenting with or transitioning to no-till fallow are concerned about reduced yields caused by late planting. Late planting is necessary in no-till fallow because seed-zone moisture during optimum planting dates (late August to mid-September) is almost always inadequate for germination and emergence.
Physiology Matters: Adjusting Wheat-Based Management Strategies for Oilseed Production (FS244E)
Abstract: For more than a century, growers have honed their management practices to meet the needs of the wheat-dominated Inland Pacific Northwest. As a result, even though we have a broad range of soil types and environments, the region lacks crop diversity. Oilseeds, however, are recognized as potential rotational crops due to their ability to extract deep soil moisture in arid environments. For growers interested in adjusting wheat-based management strategies for oilseed production, this publication describes the physiological differences between crops and recommends modifications based on those differences.
Abstract: Good management of irrigation water will increase crop yields, improve crop quality, conserve water, save energy, decrease fertilizer requirements, and reduce non-point source pollution. All of these are positive benefits and help contribute to profitable crop production.
Predicting Wheat Grain Yields Based on Available Water (EM049E)
Abstract: Wheat is the principal crop grown in many Mediterranean-like climate zones around the world, including the 8.3 million-acre dryland cropping region of the U. S. Inland Pacific Northwest. Farmers in the low and intermediate precipitation areas of this region know that planting spring wheat will help them control winter-annual grass weeds and that spring wheat production can be profitable with adequate available water. However, farmers are often reluctant to plant spring wheat because grain yields are highly variable compared to winter wheat after summer fallow.