Sajjad Raza

11 Questions 9 Answers 0 Followers

Questions related from Sajjad Raza

There are plenty of models predicting soil organic carbon fluxes. Is there any model for soil inorganic carbon?

Several models are in place to estimate soil organic carbon fluxes, turnover rate and sequestration potential. I am interested in knowing about soil inorganic models. Please guide. Any resources...

25 July 2022 3,758 1 View

How can we differentiate whether plant uptake nitrate of ammonium?

Plants usually uptake nitrogen in the form of ammonium and nitrate. If we supply 15N labelled nitrogen fertilizer in the form of ammonium which will eventually get nitrified. I am interested to...

02 August 2020 797 5 View

Amount of lime application on soils by different countries?

Lime is used to ameliorate soil acidity. I am looking for statistics about the amount of lime use on soils by different countries in different years. Could someone please suggest a database from...

14 May 2020 6,766 0 View

How to calculate the future food supply and demand for a country?

I will appreciate the valuable inputs on how to calculate future food supply and demand of a country.

17 January 2020 4,100 3 View

What is the recommended amount of protein intake for humans each from plant and animal sources?

Healthy human diet must have protein. The recommended human protein requirement is 0.8-0.9 g kg-1 body weight day-1. I am interested to know how much of this protein should come from crops and how...

16 January 2020 8,203 4 View

Soil acidification cause calcium loss from soils. Please suggest me literature to understand the effects of calcium loss on soil properties?

Soil acidification cause the loss of base cations like calcium. The loss of calcium from soil affects soil properties such as aggregation, water permeability, pH, microbes, mineralization, plants...

26 July 2019 2,145 4 View

What is the expected amount of nitrogen fertilizer use by China in 2050 and 2100?

I need to know the projected changes in nitrogen fertilizer use by China in the future (2050 and 2100). I'll appreciate if someone could provide me any paper or reference on this.

26 April 2019 4,719 0 View

N fertilization release protons during nitrification, could someone please advise at how much soil depth these protons can travel?

During nitrification process, protons are released, which reduce the soil pH and results in soil acidification. I am interested in knowing at how much depth these protons can travel down the soil...

05 April 2019 510 7 View

Could someone please inform what are the nitrate and ammonium loving crops?

I want to know about the crops which prefer up taking nitrate or ammonium from the soil.

30 May 2018 8,104 9 View

How to determine Dicyandiamide (DCD) in soil using spectrophotometer?

We have used dicyandiamide (a well known nitrification inhibitor) in soil and I want to determine the degradation of dicyandiamide with time. An HPLC method is available for its determination,...

13 March 2018 8,772 3 View

Could someone guide or share literature related to the nitrification potential of loess soils?

Loess soils are assumed to be light textured with higher nitrification activity, which makes them susceptible to excessive nitrogen losses. I am not sure whether the statement is true, needs...

22 December 2017 7,377 3 View