Deiss - Soil Nutrient Management Lab

We work at the intersection of ecology, agriculture, and soil science. Through science and education, we help develop and implement resilient agricultural systems designed to enhance ecological processes, optimize use of biotic and abiotic resources, and promote nutrient-dense food production that supports human nutrition and well-being. Our research focuses on soil health, biogeochemistry, and nutrient cycling to understand soil organic matter and C–N–P dynamics, nutrient pools, biogeochemical fluxes, and the microbiome. We advance regenerative agricultural systems and ecological intensification by integrating reduced tillage, cover crops, diversified crop rotations, perenniality, and integrated crop-livestock systems. Ultimately, we link soil, plant, and animal processes to innovative strategies that benefit farmers, ecosystems, and society.

Research Projects

The Soil Nutrient Management Lab at Colorado State University advances practical, science-based solutions for nutrient management, soil health, and resilient cropping systems in semi-arid environments. Our work integrates field trials, high-throughput spectroscopy, biogeochemical assays, and stakeholder engagement to improve productivity, environmental outcomes, and the nutritional quality of food and feed.

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Research in Action

Our work extends beyond the lab and field. Through research publications, educational resources and partnerships, the Soil Nutrient Management Lab translates soil and nutrient science into practical tools for producers, advisers, students and communities. Explore recent projects and resources showing how our research is helping address challenges ranging from nutrient management and water availability to soil health and agricultural resilience across Colorado and the Rocky Mountain West.

Weather-Responsive Nitrogen Management for Winter Wheat

New research from the lab shows how nitrogen rates, soil conditions, and seasonal precipitation interact to shape both grain yield and protein concentration in semi-arid dryland winter wheat. The study, published in Crops & Soils Magazine, provides practical, weather-responsive guidance that helps producers and advisers fine-tune N strategies for better productivity, grain quality, and profitability under variable Colorado conditions.

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Partnership with IN-RICHES: Water Wise, Soil Smart Training

The Soil Health and Nutrient Management Lab partners with IN-RICHES on practical education for the Rocky Mountain West. The first five modules of the free online course Water Wise, Soil Smart are now live. This interactive training covers the basics of soil health management and assessment, with a strong focus on how healthier soils store more water and build resilience in water-limited landscapes. Designed for producers, conservation staff, students, and advisers, the modules include real Colorado producer insights, hands-on activities, and clear next steps.

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Publications

Read about the different stages of research and implementation

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Contact Information

mailing address

Plant Sciences Building, Room 136
307 University Avenue
Fort Collins, CO 80521

phone

(970) 491-6274

e-mail l.deiss@colostate.edu