Soil Analysis

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Questions related to Soil Analysis

What was the reason to not analyze fresh soil sample as compared to dry soil sample for NO3 and NH4 ?

This is wondering me as how the process of soil sampling for both NH4 and NO3 ? what was the reason to not analyze fresh soil samples for both parameters ? the dry soil sample change the state of...

26 October 2020 9,177 2 View

How to fix convergence problmes using Mohr Coulomb Plasticity?

Dear colleagues, I am trying to simulate a strip foundation on a cohesionless soil with a friction angle of 30 degrees. However, I obtain convergence problems. I am using a geostatic step. The...

22 October 2020 4,948 2 View

How to amplify lignin degrading gene?

Hello colleagues, I would like to amply the lignin-degrading gene (i.e., LigX, LigY, LigZ, and LigW) from different types of soil. I have tried to find literature, but unfortunately, there are...

21 October 2020 9,960 3 View

Results of C and N comes out 0.00 for a soil sample collected in the natural terrestrial forest stands, is it possible?

After soil chemical analysis, obtained result for the content of organic carbon and nitrogen in kg/ha shows 0.00, whereas potassium content is 55.20 kg/ha for a surface soil sample collected in...

21 October 2020 9,771 7 View

Which procedure would be the most successful to determine glomalin in soil?

We have to determine easily-extractable glomalin (EEG) and total glomalin (TG) from soil samples, but we have found various contradicting methods and calculations. Is there a trusted method that...

21 October 2020 3,385 3 View

Which procedure is most convenient for performing tensile strength tests on reinforced laboratory soil specimens?

The fact that there are no proper laboratory equipments devised till date for direct tensile testing of soil, I'm looking for a simple indirect procedure that would help in determining tensile...

13 October 2020 8,601 2 View

How to interpret an enzymatic inhibition as mixed or product inhibition?

GDP is the product of GTPase reaction. In the biochemical setup containing enzyme GTP and GDP, GDP acts as an inhibitor as the enzymatic activity was found to decreased. Km increases and vmax and...

04 October 2020 6,727 16 View

What are the reliable tools for soil pH and NPK testing?

I have found some tools which would be inserted to the soil, but I'm not sure about its accuracy. Can anybody suggest inexpensive, easy-to-use, accurate soil testing tools/kits?

01 October 2020 1,912 3 View

Can vermicompost be applied as the replacement of organic manures?

The main component of vermicompost is cow dung and earthworm, and it is mainly used as to supply of organic matter and different essential elements to the soil. On the other hand, organic manures...

22 September 2020 3,984 8 View

What temperature will cause a soil to become hydrophobic?

Hi, I am air drying soil samples of a number of soil types to be used to produce a soil moisture curve for the callibration of soil moisture sensors to the diffrent soil types. Once the soil is...

08 September 2020 4,568 3 View

DNA is not precipitating after incubating in ethanol overnight?

I am working on the soil microbiome of heavy metal contaminated soil. I extracted gDNA from the soil sample using the FastDNA Spin Kit and performed ethanol precipitation to clean up the salt...

02 September 2020 4,354 2 View

Why don't we consider the biological properties for soil quality index computation?

There are several methodologies and quality publications available regarding on soil quality index but they have not considered the soil biochemical properties. Please let me know the scientific...

31 August 2020 2,309 37 View

How to calculate amount of water needed to add to a pot with 2 kg soil and a growing plant to maintain moisture at 30% field capacity?

I want to grow plant under water stress (30% field capacity). But I don't know how to calculate amount of water needed to maintain soil moisture at 30% field capacity in pot with growing plant....

28 August 2020 3,588 4 View

Does anyone have a good protocol for taking soil samples and extracting fungal DNA?

I'm trying to compare fungal communities in the soil of two neighboring ecosystems. I need a protocol for soil sampling to later use for sequencing fungal communities.

26 August 2020 7,070 3 View

Passive Dye Leakage from Liposomes?

I am trying to perform dye leakage assays using carboxyfluorescein (CF) containing liposomes. I have been observing this strange phenomena where CF will passively leak out of the vesicles over...

21 August 2020 4,198 3 View

Soil pH measurement - how can I improve unstable measured pH values?

Hi, I have a problem in measuring soil pH. The soil is collected from a coastal sand dune and my extracting solution is made with the following procedure: 5g of soil + 25ml of distilled...

19 August 2020 9,912 3 View

Can we Apply the Statistics on data less than 30 datapoints?

Hello I monitor the water quality for 7 days and check the physio-chemical properties of water so after 7 days I get 21 data points . So can anyone helps me to figure out my doubt that we can...

18 August 2020 6,212 5 View

How to simulate MSE walls for dynamic FE analyses?

Hi colleagues, Because of the complexity of modelling geogrid layers and their interfaces which can cause convergence problem in FE analyses, I have seen in practice they model the whole MSE wall...

15 August 2020 5,090 3 View

How can i contaminate soil sample with TCE artificially? what is the procedure i have to follow?

TCE is toxic organic compound, and is volatile at room temperature.

04 August 2020 4,538 2 View

How may untypical structures inside the spores of arbuscular mycorrhizal fungi be identified?

I can not describe morphology of some AMF spores isolated from soil sample. Permanent slides in PVLG+Melzer, x600, light microscopy and phase-contrast microscopy. Pink stained spherical structures...

02 August 2020 3,718 3 View

X-Ray fluorescence technique can be used for soil nutrient detection? Can we get concentrations of Macro and Micro nutrients accurately?

I want to perform soil nutrient analysis. I want to use X-ray fluorescence technique instead of chemical analysis that is conventionally used in lab. Is it reliable to use X-ray fluorescence for...

29 July 2020 9,004 3 View

How the different methods and levels of irrigation effect the dry root rot incidence in fields ?

In chickpea, little information is available on the impacts of irrigation on dry root rot and very less information is known about how the disease is affected by different methods and levels of...

28 July 2020 1,018 1 View

Extraction from soil for FIA analysis ?

Hi everyone, i would like to extract some elements and molecule from soil for an Continuous-Flow Analysis (Futura, AMS Alliance) but for these analysis I only have very little material (about...

27 July 2020 8,655 3 View

Equivalent viscous damping ratio for cyclic shear on masonry walls ?

Hi, Equivalent viscous damping ratio is an indicator that is often used for the analysis of seismic performance of masonry walls. Two definitions are frequently used (see attached figure) : -...

27 July 2020 4,842 4 View

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