Nelly is a postdoctoral researcher at the University of Copenhagen. She conducts research on organic and mineral forms of phosphorus fertiliser. She explores its plant-availability and models its fate in the soil to optimise its application.
Nelly did her PhD at the University of Copenhagen, then went to Australia to do a first postdoc and now returned to Denmark to do a second postdoc.
Let’s start with her PhD research
Dissertation title: (link)
Potential for increasing phosphorus bioavailability of thermally treated sewage sludge using phosphate solubilising fungi
- In vitro lab-experiments with different combinations of ashes derived from wastewater sludge with phosphate solubilising fungi and nutrients (carbon and nitrogen) to optimise the P-solubilisation activity from the inoculated fungi
- Transfer of the most promising combination ash/fungus to a soil plant system under controlled and field conditions
- Under soil-less lab-conditions P availability from wastewater ashes could be increased
- In pot and field trials no beneficial effects from adding microbes to the soil could be detected
- Theses results were against what was commonly found in scientific literature and her experiments could show that results can differ greatly between the lab and the ‘real world’
Papers in connection to PhD
Review paper we talked about: Phosphate-solubilising microorganisms for improved crop productivity: a critical assessment
PhD Funding: Innovation Fund Denmark and Novozymes
Nelly’s postdoc in Australia
Title: Understanding P dynamics and bioavailability in alkaline clay soils
For that she used an existing agricultural systems computer model and laboratory incubations. To calibrate the model a lot of data is needed to represent P behaviour under different conditions such as weather, crop and soil typ.
Funding: GRDC (Grains Research and Development Corporation)
Papers in connection with Nelly’s work in Australia
Nelly’s postdoc in Copenhagen
Title: Resilient crop production using innovative P sources supported by Microbial P Mobilisation (Mic-P-Mob)
In the course, students learn to classify soils into different groups, to understand their characteristics and from that to understand how they could be used in an agricultural context. She also teaches the students basic soil analysis done in the lab.
In her research she studies the relations between carbon, nitrogen and phosphorus in the soil and how these relations impact P availability to crops.
Funding: NovoNordisk (Plant Science, Agriculture and Food Biotechnology – Postdoctoral Fellowships 2021)
Agro-ecology: aims to align agricultural practices more with ecological processes to make agricultural more sustainable and resilient
Cation-exchange capacity: YouTube Video
& listen to it whenever it suits you : )
You have a question about the podcast in general or this episode in particular? Please feel free to write a PM or comment below the post of this episode on instagram or LinkedIn!