Mamdouh A. Eissa

10 Questions 5 Answers 0 Followers

Questions related from Mamdouh A. Eissa

Dose any one can help me to assess a Qudratic Plateau model?

I studied the response of wheat to different nitrogen rates and I sent the paper to a journal. The rates of nitrogen were 120, 180, and 240 kg N /ha. I recorded the grain yield. The reviewers...

08 August 2017 4,675 5 View

Water and NPK requirements for quinoa

Does any one know the water requirements of qinoa? Does any one know the fertilization requirements of quinoa?

06 June 2017 6,023 4 View

Can anyone suggest where to obtain the certified reference for the soil and plant samples quality assurance?

I need some certified reference for the soil and plant samples for quality assurance and control.Then how to do the quality assurance and control?

02 February 2015 8,201 4 View

How does the halophyte plant reduce water loss during heat?

I made a study to investigate the ionic contents and nutritive value of big saltbush (A. lentiformis) and old man saltbush (A. nummularia) during the different seasons of the year. I found some...

02 February 2015 4,457 8 View

Which fractions of heavy metals are extracted by the DTPA?

When we used the DTPA method to extract heavy metals (Zn, Pb, Cd and Cu) from soils, which fractions exactly extracted by the DTPA (water soluble, exchangeable, organic-bound,...

02 February 2015 1,616 6 View

Does anyone have experience in SAS statistical analysis program?

I am trying to make a correlation between phosphorus (P) and yield of wheat grown in sandy calcareous soils. I have three parameters (concentrations of P in plant, soil P and yield of wheat) and I...

12 December 2014 2,619 2 View

How to wash the plant samples for heavy metals determination?

I want to know how to prepare the root samples of the plants after removing them from soils for heavy metals measurement. how to wash the roots and shoots? are there any recommended washing...

10 October 2014 3,436 8 View

What is the suitable extraction solution for soil available heavy metals?

We extract the available heavy metals from soils by DTPA (diethylen triamine penta acetic acid) solution buffered at pH 7.3 as described by Lindsay and Norvell (1978) , but when we inject the...

10 October 2014 3,741 10 View

What is the suitable digestion method for chloride determination in plant samples?

I finish a pot experiment using some halophytes plants and I want to measure the chloride (Cl) content in the plant samples and I asked about suitable digestion methods

10 October 2014 1,969 6 View

Can anyone help me in English editing?

I prepared some research papers from my last experiments about the use and re mediation of metals contaminated soils. I submitted some of these works to Geoderma,J. Environmental Quality Soil...

09 September 2014 7,068 2 View