How to calculate the Humin fraction in the soil?

I am studying about soil organic matter. How to calculate the Humin fraction in the soil?

02 March 2017 1,761 0 View

What is the threshold of Degree of phosphorus saturation to runoff Phosphorus into the environment?

I have studied of Phosphorus and degree of phosphorus saturation in some soils in the Vietnam and Olsen'S test was used to analysis the available phosphorus in soils. What is the threshold of...

09 October 2016 283 6 View

What is the soil chemical property affect to phosphorus availability in soils? What is the most importance factor?

What is the soil chemical property affect to phosphorus availability in soils? What is the most importance factor?

08 September 2016 9,664 2 View

Can the Olsen test to analysis soil P available in the acid sulfate soils (or the soil with low pH)?

Can the Olsen test to analysis soil P available in the acid sulfate soils (or the soil with low pH)?

08 September 2016 6,416 11 View

How do I calculate phosphorus potential buffering capacity (PBC)?

I am studying about phosphorus buffering in some soils in Viet Nam. How to calculate the phosphorus potentail buffering capacity (PBC). It is "k" in the Langmuir formula (the bonding enery...

31 December 2015 3,899 6 View

How to dertemine the best method to analysis soil phosphorus available?

Soil analysis

07 August 2015 6,244 5 View

Can I run spearman's correlation on non monotonic data? Is it advisable?

Hi all, I am running a partial correlation analysis on mood data. I want to see if there is a correlation between scores on a novel hypomanic mood scale and existing measures of hypomania - the...

25 February 2021 1,619 3 View

How to handle studies which report perfect effect sizes in a meta-analysis using Pearson's r?

I'm in the process of updating a meta-analysis and in one of the new studies, effect sizes are reported as Tau-U. Two of the effect sizes are reported as Tau-U = 1.00. I am using Andy Field's...

24 February 2021 2,265 3 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

Interpretation of Goodman - Kruskal Gamma squared?

Dear colleages, Eta squared is dominantly used in reflecting the explaining power the same manner as a squared partial correlation coefficient (R2p ) from multiple linear regression: as the...

22 February 2021 7,801 3 View

Are there packages (R or Python) for simple models (bucket?) to assess soil water content?

Hi everyone. I am researching droguht effects on soil water drought. I am looking for already implemented functions in R or Python to estimate soil water content from precipitation,...

21 February 2021 2,084 1 View

Which type of loading is to be used in dynamic analysis of Machien foundation?

Hello Everyone, Hope you all are doing well. I'm trying to simulate a machine foundation in ABAQUS with a geo-cell reinforced soil bed. Im totally confused to which type of loading would be...

21 February 2021 4,388 3 View

How do I group questions of SPSS under one variable for Spearman's r?

12 February 2021 5,379 5 View

What effect size should i use for a meta-analysis when study data violate normality assumptions?

I'm looking for advice regarding what effect size to use for meta-analysis. Our question is whether the number of individuals in a group affects the per-capita productivity of that group. Does...

10 February 2021 5,510 8 View

Measurement of water retention in organic substrates without a pressure plate?

Hello, I'm trying to measure the physical and hydrological properties of organic substrate media. Currently, I'm referring The book Soil sampling and Methods of Analysis by Carter and Gregorich....

09 February 2021 3,233 8 View

What will happen (quality or quantity wise) if we transplant 'Aerobic Rice' in puddled condition?

I want to know about the consequences of aerobic rice (both quality and quantity-wise) when transplanted or sown in puddled condition?

08 February 2021 2,343 6 View