Expressing phosphatic fertiliser contents in terms of P2O5 and not orthophosphate PO4 3-.

08 August 2017 1 3K Report

Australian soil scientists and agronomist express phosphorus as elemental P. We believe that most plant uptake occurs as PO4. Where did P2O5 come from?

I have noted some earlier comment about this but it did not get to the basis of the question.

Anoop Kumar Srivastava

We have debated this issue earlier also...

P exists in oxide form under natural condition..you can express in P also...Phosphorous forms phosphorous penta oxide in presence of oxygen, whereas phosphoric acid is formed once these oxides react with water depending upon number of hydrogen atoms replaced with phosphates.You need to multiply by 0.44 to convert P2O5 into P. That way , P will be 20.24 kg in 100kg TSP...very simple calculation..

Badges
Science topic

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

What is this fern?

Please help me to identify this fern species. Thank you in advance.

24 February 2021 2,435 5 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

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 to use Remote sensing and GIS applications for mapping the available medicinal plants within the locality/municipality?

Hello, I'm very interested in mapping and managing the conservation of the Philippine traditional medicinal plants, in which I think is very helpful in the field of medicine for further analysis...

21 February 2021 374 5 View

Can medicinal plants really play an inherent rule in the COVID-19 tackle?

Numerous scientific reports cited plant extracts with potential antiviral activity and even anti-COVID-19? Why these findings are neglected? I remember very well the warning released by the WHO to...

17 February 2021 2,141 9 View

Is there any solar electric power plant having the concentrated photovoltaic modules?

The solar photovoltaic (PV) power plant uses commercial (non-concentrated) PV modules which are quite simple in design and reliable. They can work on fixed orientation and don't need the moving...

16 February 2021 3,796 9 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