Thomas Fungenzi

19 Questions 34 Answers 0 Followers

Questions related from Thomas Fungenzi

Comparing 1 ton fresh vs. composted residues on soil carbon sequestration?

Dear ResearchGate Community, I am conducting an analysis to compare the carbon sequestration potential of applying 1 ton of fresh organic residues directly to soil versus the application of 1 ton...

14 February 2024 10,059 6 View

Could you recommend methods/protocols to test soil carbon in the field, with a portable lab?

I am looking for methods developed to estimate soil carbon contents in the field. Have you heard of such attempts? I am interested in an approach focused on organic or total carbon, using portable...

12 June 2023 9,708 8 View

Can you list examples of abiotic soil organic matter mineralization processes?

Do you know about abiotic soil organic matter mineralization processes? In soil science, we always talk about biologically-driven mineralization of soil organic matter. However, do strictly...

27 February 2023 5,148 13 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

01 March 2021 8,159 8 View

What is the magnitude of yearly rhizopdeposition in tropical forests?

Hi all, I am trying to find reference values on annual soil rhizodeposition rates for different kinds of forests, with a particular interest for tropical rainforests. Do we have an idea of the...

27 January 2021 4,702 4 View

How to present unreliable results when writing a research article?

Hi, I'm working with a set of soil analyses obtained from an external laboratory. Studying the results, I am highly confident that one of the analyses gave incorrect results because the values...

28 October 2020 8,972 10 View

Could you recommend publicly available time series datasets on soils (large!)?

I am looking for large datasets including information on soils (texture, depths, carbon , etc.) and their location (GPS coordinates or climates data). Any suggestions? Any large studies which...

25 June 2019 811 8 View

Is there an acceptable way to convert soil carbon concentration values for a certain depth to another (for 0-20cm to 0-10cm)?

I am trying to compare soil carbon concentrations from different studies. The problem is that most of them use different sampling depths: 0-10cm 0-15cm 0-20cm 0-30cm ... Is there an acceptable...

30 May 2019 3,231 10 View

How much biomass is produced in average by the main crops?

I am looking for values comparing the yields (potential and or average), net primary production, amount of residues for the main crops over the world, ... anything related to the amount of...

05 April 2019 8,307 15 View

Could you recommend crucial variables and associated methods to study soil organic matter quality?

I am beginning a PhD on soil organic dynamics in cocoa plantations. Could you recommend interesting variables to study the quality of soil organic matter and its changes over time? Quantity is the...

15 September 2018 7,941 6 View

How to measure the quantity and nature of root exudates?

I am interested in the contribution of root exudates in soil processes. What is the recommended procedure to measure the magnitude of root exudates production (the quantity over a certain...

12 September 2018 5,055 5 View

What model should I use to model soil changes in agroforestry systems such as cocoa?

I am currently undertaking a study on long-term soil fertility changes and organic matter dynamics in cocoa plantations. I would like to study the effect of organic amendments and fertilizers on...

02 September 2018 7,418 7 View

How do most soils do to have a C/N around 10?

"The C/N ratio of soils is about 10–12:1." ( Donald L. Sparks, in Environmental Soil Chemistry (Second Edition), 2003) I know, the wording of my question is very strange, but that is to provoke...

10 July 2018 5,242 25 View

How to promote asymbiotic nitrogen fixation in agricultural soils (and composts)?

I am doing some literature review to better understand the processes governing the biological fixation of nitrogen by non-symbiotic micro-organisms (associative, endophytic, free-living...). I am...

02 February 2018 2,559 19 View

Do you have example of earthworm population dynamics throughout the year under temperate climate in agricultural conditions?

To make it simple, I am looking for a study which has followed the monthly variations of earthworm abundance and biomass over a year. I need to present a clear chart to farmers to illustrate the...

11 July 2017 3,392 6 View

Could you try to explain how C and N cycles are coupled in soils ? ⛓️🔬🤔❓

This may be a very weird question but,Could you try to explain how C and N cycles are coupled in soils ? ⛓️🔬🤔❓ How do C and N are "metabolically intricated" ? I guess it is a bit of a dumb...

13 June 2017 6,430 9 View

Have you heard about existing (and great) e-learning trainings about conservation agriculture ?

I am seeking for great examples of e-learning trainings and courses in conservation agriculture, especially about soil management practices. Do not hesitate to share links and material. Cheers,-...

20 May 2017 5,294 3 View

Could you cite existing methods to explore the nutritionnal status of perennial crops (such as rubber tree for example)?

Are there standard procedures to monitor the mineral nutrition of perennial crops ?Thanks

03 May 2016 2,629 7 View

Where can I find 'official' standards for organic matter levels in arable soils and in forestry?

The best would be UK standards.Defra and lab gives target levels but I cannot find what they are depending on crop/climate/soil type.Thank you!

27 August 2015 1,217 8 View