Hans-Werner Olfs

Professor for Plant Nutrition and Crop Production

University of Osnabrück

Germany

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Hans-Werner Olfs is a Professor for Plant Nutrition and Crop Production at the University of Applied Sciences Osnabrück in Germany. His research focuses on soil nutrient management, ammonia emissions, and the application of innovative measurement techniques in agriculture. Recent publications include studies on soil extraction methods for nutrient measurement and the impact of slurry application techniques on emissions and crop yield.

Articles (14)

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2025

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2025

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2024

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2024

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2023

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2023

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2023

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2023

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2023

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2023

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2022

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2022

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2022

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2022

Collaborators (3)

Klaus Dittert

Professor of Plant Nutrition and Crop Physiology

University of Goettingen

GERMANY

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Andreas Ulbrich

Prof.

Hochschule Osnabrück

GERMANY

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Klaus-Juergen Appenroth

University of Jena

GERMANY

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Hans-Werner Olfs

Research Interests

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Articles (14)

On-Farm Application of Near-Infrared Spectroscopy for the Determination of Nutrients in Liquid Organic Manures: Challenges and Opportunities

A Rapid In‐Field Soil Extraction Procedure to Measure Plant‐Available Soil P and K Using an ISFET Multi‐Sensor

An Incubation System for the Simulation of Ammonia Emissions from Soil Surface-Applied Slurry: Effect of pH and Acid Type

Lessons learnt from the use of passive samplers to measure ammonia emissions in multi-plot experiments

Development of an express method for measuring soil nitrate, phosphate, potassium, and pH for future in‐field application

Effect of slurry application techniques on nitrous oxide emission from temperate grassland under varying soil and climatic conditions

Evaluation of calibrated passive sampling for quantifying ammonia emissions in multi‐plot field trials with slurry application

Evaluation of the Dynamic Tube Method for Measuring Ammonia Emissions after Liquid Manure Application

Development of a Physicochemical Test Kit for On-Farm Measurement of Nutrients in Liquid Organic Manures

Effects of Liquid Manure Application Techniques on Ammonia Emission and Winter Wheat Yield

Nutritional Value of Duckweed as Protein Feed for Broiler Chickens—Digestibility of Crude Protein, Amino Acids and Phosphorus

Re-circulating indoor vertical farm: Technicalities of an automated duckweed biomass production system and protein feed product quality evaluation

Evaluation of Physicochemical On-Farm Quick Tests for Estimating Nutrient Concentrations in Pig Slurry and Development of an Application for Mobile Devices

Influence of Light Intensity and Spectrum on Duckweed Growth and Proteins in a Small-Scale, Re-Circulating Indoor Vertical Farm

Collaborators (3)

Klaus Dittert

Andreas Ulbrich

Klaus-Juergen Appenroth

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