Indranil Das

8 Questions 26 Answers 0 Followers

Questions related from Indranil Das

How to calculate the Mean Bray’s percent yield from the series of Bray's percent yield data or from the corresponding nutrient levels data ?

I am trying to derive the Cate Nelson concept of critical limit determination in MS Excel. I would like to know the step by step detailed derivation of this concept though I derived Bray's percent...

18 July 2022 9,671 0 View

Why free phosphoric acid (>4%) in SSP fertilizer is considered harmful for plant ?

Phosphoric acid is in the form of H3PO4 remained free while manufacturing of SSP fertilisers. So far Quality of fertiliser is concerned the free phosphoric acid should be less than >4% as it...

20 December 2021 9,892 3 View

Inspite of High soil fertility levels how high doses of fertilisers gave better response sometimes ?

We all know that fertility levels are inverse to the fertiliser doses. Sometimes higher doses than recommended are used for specific benefits in soil as well as in crops. But unnaturally in soil...

02 July 2021 5,615 4 View

Is it possible to determine % K2O of organic manures by STPB method ?

To determine % K2O of organic manures, flame photometric technique is used whereas in inrganic fertiliser for K2O determination STPB method is used. I am trying to find out any method of...

25 January 2021 4,890 3 View

Whether Mo in straight Fertiliser can be dertmined colorimetrically by SnCl2?

Determintion of Mo in fertilisers according to colorimetric method (using Ferrous Ammonium Sulphate, SnCl2, Potassium Thio-cyanate and Isoamyl alcohol, phase separation method) is a cumbersome...

11 September 2017 8,265 4 View

What would be relevance to current soil testing based fertiliser recommendation within a wide range of fertility levels?

It has been observed that the current fertility levels for major nutrients is within a wide range. On the basis of these fertility levels fertiliser recommendations were made. Though there are...

25 May 2016 5,961 15 View

Is there any standard procedure for determination of water solubility of compound/mixed fertiliser?

Please provide the detailed procedure for analysis. I have the procedure for determination of water insoluble particles in fertiliser. Will that suffice?

21 August 2015 9,129 6 View

Is there any reagent that can replace KCN for blocking Zn from EDTA?

We all know KCN is lethal and is not easily available for laboratory analysis. Is there an alternative to KCN that can act similarly as a coupling agent?

17 January 2013 2,344 10 View