Explore our comprehensive research on soil health and nutrient stewardship, featuring field-tested strategies for managing nitrogen, phosphorus, manure, irrigation, salts, and micronutrients across Western dairy operations.

Research Library

Research

Manure & Compost Management

Manure & Compost Management

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Nitrogen Management

Nitrogen Management

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Dairy Compost Management

Dairy Compost Management

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Phosphorus Management

Phosphorus Management

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Manure-Related Crop Production

Manure-Related Crop Production

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Salt Accumulation, Irrigation Water & Soil Health

Salt Accumulation, Irrigation Water & Soil Health

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Air Quality Management

Air Quality Management

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Anaerobic Digesters

Anaerobic Digesters

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Research Papers

Research Papers

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Research Videos

Research Videos

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Manure & Compost Management

Dairy Compost Production & Use in Idaho: The Composting Process

Fertilizing with Manure & Other Organic Amendments

Manure application rates for forage production

Sampling Dairy Manure & Compost for Nutrient Analysis

Manure Byproducts & Fertilizers

Dairy Manure Field Applications - How Much is Too Much?

Dairy Manure Applications in Irrigated Wheat Production Systems

Methane Potential of Manure

C.R.A.P App Spreadsheet

How Much Manure Will My Animals Produce?

Estimating Manure Nutrient Excretion

Dairy Compost Production & Use in Idaho: On-Farm Composting Management

Interpreting Compost Analyses

Manure & Wastewater Sampling Guide

Dry Matter Determination

What is Required in a Nutrient Management Plan? (Washington)

Nutrient Management Planning for Livestock Producers (Utah)

Nutrient Mangement Plan Template (Utah)

Whole Farm Nutrient Management: A Dairy Example

Manure Management in Small Farm Livestock Operations

Nutrient Recovery: Products From Dairy Manure to Improve Soil Fertility

Soil Nitrate Testing for Willamette Valley Vegetable Production

Nitrogen Management

Baseline Soil Nitrogen Mineralization: Measurement & Interpretation

Postharvest Soil Nitrate Testing

Estimating Plant-available Nitrogen from Manure

Understanding Nitrogen Utilization in Dairy Cattle

Determining the Nitrogen Fertilizer Value of Manure Byproducts

Phosphorus Mass Balance on Livestock & Poultry Operations

Phosphorus Management

Agricultural phosphorus management using the Oregon/Washington Phosphorus Indexes

Phosphorus in the Calcerous Soils of Southern Idaho

Monitoring soil nutrients using a management unit approach

Managing Dietary Phosphorus to Reduce Environmental Impact of Dairy Farms

Phosphorus Drawdown – How Long Does it Take to Remove Soil P with Forage Rotations?

Manure-Related Crop Production

Silage Corn Nutrient Management Guide for Western Oregon

Organic Potato Production

Animal Manures as Organic Amendments in Potato Cropping Systems

Nutrient Management for Field Corn Silage & Grain in the Inland Pacific Northwest

Nutrient Management Guide for Dryland & Irrigated Alfalfa in the Inland Northwest

Nutrient Management for Pastures: Western Oregon & Western Washington

Dairy Manure Applications in Irrigated Wheat Production Systems

Salt Accumulation, Irrigation Water & Soil Health

Soil organic matter as a soil health indicator: Sampling, testing & interpretation

Managing salt-affected soils for crop production

Soil Sampling Guide for Crops

Soil Carbon Science 101

Understanding & Measuring Organic Matter in Soil

Protect the Soil Surface to Increase Water Infiltration

Water Quality Risk Assessment Tool for Animal Operations

Livestock Management & Water Quality

How Fertilizers & Plant Nutrients Affect Groundwater Quality

Water Quality Regulations (Utah)

Financial Assistance for Water Quality Improvements (Utah)

Manure Management in Small Farm Operations: Protecting Surface & Groundwater

Dairy Practices to Reduce Emissions

Air Quality Management

Practices to Improve Air Quality When Land Applying Manure

Lagoon Practices for Managing Air Quality

Air Quality & Agriculture

Digested Fiber Solids: Methods for Adding Value

Anaerobic Digesters

Biogas Upgrading for Dairy Digesters

The Rationale for Recovery of Phosphorus & Nitrogen from Dairy Manure

Anaerobic Co-Digestion on Dairies in Washington State

Occurrence & abundance of antibiotic resistance genes in agricultural soil receiving dairy manure

Research Papers

Soil Organic Carbon Dynamics in Semi-Arid Irrigated Cropping Systems

Association between extracted copper and dissolved organic matter in dairy-manure amended soils

Dairy manure effects on sugar beet yield, quality & nutrient uptake potential

Greenhouse Gas Emissions from an Irrigated Crop Rotation Utilizing Dairy Manure

Growing & Non-growing Season Nitrous Oxide Emissions from a Manured Semiarid Cropland Soil under Irrigation

Simulating Soil Nitrogen Fate in Irrigated Crop Production with Manure Applications

Long-term Dairy Manure Amendment Promotes Legacy Phosphorus Buildup & Mobility in Calcareous Soils

Phosphorus Speciation in Calcareous Soils Following Annual Dairy Manure Amendments

Soil–Plant Nutrient Interactions on Manure-Enriched Calcareous Soils

Nutrient Availability to Corn from Dairy Manures & Fertilizer in a Calcareous Soil

Predicting Nitrogen Mineralization from Dairy Manure & Broadleaf Residue in a Semiarid Cropping System

Nitrogen Mineralization as Affected by Temperature in Calcareous Soils Receiving Repeated Applications of Dairy Manure

Residual Effects of Fresh & Composted Dairy Manure Applications on Potato Production

Salt Accumulation & Potato Tuber Yield Response to Historical Dairy Manure Applications in South-Central Idaho

Dairy Manure Influences Soil Properties, Plant Nutrient Uptake & Tuber Quality in Potatoes

Research Videos

Cover Crop Study

Interseeding Cover Crops in Corn

Understanding Soil Tests

LT Study

GHG Chambers

On-Farm Emissions

Podcasts