Olivier Duboc

Olivier Duboc
University of Natural Resources and Life Sciences Vienna | boku · Institute of Soil Research & Institute of Agronomy

Dr.

About

16
Publications
3,448
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183
Citations
Introduction
My research interests are at the interface of sanitation & waste management, soil science, and agroecology/agronomy. Recycling nutrient-rich side streams as fertilizer is a prerequisite to sustaining crop production in the long-term. To that end, expertise in these different disciplines is primordial. I have experience with N, P, Si, B and other micronutrients, with focus on experimentation in lab & greenhouse and related analytical methods.
Additional affiliations
May 2011 - September 2012
Forschungsinstitut für biologischen Landbau
Position
  • Research Assistant
Education
September 2014 - December 2018
March 2006 - July 2009

Publications

Publications (16)
Article
Soil solid-phase phosphorus (P) speciation and chemical conditions exert a crucial role in both aqueous P speciation and concentration—the most available and mobile pool for biota in environments. However, the interplay between solid-phase speciation and the aqueous phase of P in soil systems is unresolved. Herein, we investigated the speciation an...
Article
Policies for restoring soil health and mitigating climate change require information on soil organic carbon (SOC) stocks and their spatial and temporal variation, and related sequestration potentials. Using the province of Lower Austria as environmentally diverse model region, we present a detailed analysis of SOC stocks, saturation potentials and...
Article
Full-text available
In the framework of the circular economy, new P fertilizers produced from diverse secondary raw materials are being developed using various technologies. Standard extraction methods (neutral ammonium citrate (NAC) and H2O) provide limited information about the agronomic efficiency of these often heterogenous new products. Here, we compared these ex...
Article
Full-text available
Boron (B) is a plant nutrient and a limited mineral resource. Therefore, secondary B sources such as end-of-life cellulose fiber insulation (CFI) should be preferred for B fertiliser production over primary borates. In addition, crop B fertilisation is challenging because B is only weakly adsorbed in soils and prone to leaching in particular if the...
Article
Boron is a finite resource, which has been listed as a critical raw material in the EU since 2014. Glass, frits and ceramics production, as well as fertilizers, are among the major uses of B. Moreover, about 50,000 t B have been applied as fire retardant and pest repellent in cellulose fiber insulation (CFI) in Europe since the 1980s. Here we propo...
Article
Crops may require Si fertilization to sustain yields. Potential Si fertilizers include industrial by-products (e.g. steel slags), mined minerals (CaSiO3), fused Ca-Mg-phosphates, biochar, ash, diatomaceous earth and municipal sewage sludge. To date, no extraction method was shown to accurately predict plant availability of Si from such chemically d...
Article
Fertilizers produced from heterogeneous, phosphorus-rich biowastes are becoming increasingly relevant. Treatment and processing (combustion, pyrolysis, anaerobic digestion, etc.) increase the diversity of their physico-chemical composition even further. We investigated several approaches to characterize P availability from a set of 13 contrasting f...
Conference Paper
Full-text available
The depletion of fossil nutrient reserves and the intrinsic nature of farms as open entities through which nutrients flow, will require introducing more recycling fertilizers in Organic Agriculture (OA). Processes exist to safely recover nutrients from wastewater, and some products have been considered suitable for Organic 3.0. While the safety iss...
Article
Full-text available
Litter decomposition is an important process for cycling of nutrients in terrestrial ecosystems. The objective of this study was to evaluate direct and indirect effects of climate on litter decomposition along an altitudinal gradient in a temperate Alpine region. Foliar litter of European beech (Fagus sylvatica) and Black pine (Pinus nigra) was inc...
Article
Lignin is an aromatic plant compound which decomposes more slowly than other organic matter compounds; however, it was recently shown that lignin could decompose as fast as litter bulk carbon in minerals soils. In alpine Histosols, where organic matter dynamics is largely unaffected by mineral constituents, lignin may be an important part of soil o...
Article
Litter decomposition is an important process in global carbon (C) and nutrient cycles. The objective of this study was to evaluate the role of climate on litter decomposition along an altitudinal gradient in a temperate Alpine region, and to characterize the decompositional stages of the litter material with Fourier-transform mid-infrared spectrosc...
Article
Ongoing population growth still represents a challenge to agricultural production (food, fiber and fuel material supply). In spite of the undeniable achievements reached with the "green revolution" technologies, there is a growing awareness among scientists and policy makers that diverse and integrated approaches which are both productive and susta...
Article
Full-text available
The increase in crop production brought by the green revolution in India is now shadowed by new challenges related to soil degradation (e.g., erosion, decline of soil organic matter content, salinization) and scarcity of water resources. The present work particularly discusses the contribution of no-till and organic farming, which are increasingly...

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Projects

Projects (2)
Project
Phosphorus is an essential element for plants. Bio-based fertilisers can transform the agricultural industry by minimising the environmental impact of existing fertilisers and improving sustainability. This project aims at extracting phosphorus BBFs with different lab methods, and to compare it with fertilization efficiency in pot and field experiments to determine which lab method works best. This PhD project is part of the EU H2020 project Lex4Bio: optimizing the use of bio-based fertilizers in Europe. lex4bio.eu
Project
Study nutrient availability (P, Si...) from recycled waste materials treated by various thermo-chemical processes such as pyrolysis, hydrothermal carbonization.