Salinity can develop stratigraphic columns.

Soil texture in a clay texture must be borne in mind is ma easy to make the experiment group momtmorillonita clays are the most suitable pair this process. The salts must sodium, calcium and magnesium, depending on the type of experiment you want to perform. Remember that disperses sodium and calcium and magnesium agglutinate clay.

Hi Farooq: 

Question is incomplete. Answer depends on the type of  soil used in the pot/s, plant ( or seed) under investigation and aim of the experiment. Salinity is broad name. Are you interested in a specific application of a trace or macro mineral.?  You see NaCl, KCl are all salts. One is trace, other one is macro.

In order to develop the salinity in pots  through   salt addition,  primarily depends on the soil texture  and the level of salinity  at which you wish to test the salinity tolerance . You also need to reveal what do you mean by short term , how many days of crop performance you want to evaluate . And which kind of salinity you want to develop artificially for your test plant. The type of salinity will depend upon the    type of salinity of that region , you are looking at . All these must constitute your question to be very precise in answer. You also look at the discussion took place in response to question posted by Dr Nazir Hussain  on similar lines. This will further help you to get some correct insight into the issue.

Dear farooq

Different levels of saline water i.e 1.0, 2.0 and 3.0 EC can be prepared and added in the pot. Requirement of salinity levels are depend on kind of crops, type of soil and irrigation water quality. 

Hello Farooq ji

Developing a salinity level in soil is very difficult.  By adding salt waters of known EC we can have soils with required EC for few hours or days. If you want to conduct an experiment in pots with different salinity levels, the easy way is to identify different salinity plots in the field (Agril Res. Station, Gangavathi, Karnataka). Bring the soil near to the EC level you require. Add saline water for litter rise as per the requirement.

Saline water can be of 2 EC which has nearly 1.0 g of salt per liter of water. For 10 kg soil in a pot you need to add 10 liters of saline water to rise 1 EC.

That is all.

Try and give your feed back please

Thanks

Farooq! you have read various answers presented by researchers. I want to give an answer in greater detail. 

First thing is what type of sanity you want; saline soil, saline sodic soil or sodic soil?

2.  What is you objective of study? Do you want to work on irrigation water salinity or soil salinity?

3. Keep in mind the area in which you want to work. Then you should know the average composition of salt affected soils of that area.

4. The pH and SAR of the soil are also very important you want to work because salts you will use for salinization may or may not affect both these parameters.

5. Of course soil texture is not less important consideration.

6. The crop you want to work, see tolerance range from literature, more preferably for your area keeping soil texture in mind

The best option I will suggest for you is go to the field, select a salt affected field, get samples from different portions of the field because there is lot of variation of salinity in the field, test and select the level you want. Get bulk sample of the level you want (keep soil depth in mind, level changes with change of depth), homogenize and retest again. This is the best reliable method for salinity studies in pots.

But if you want to compare soil textures then this method will not work. In that case you have to salinize the soil artificially.

For salinization, in Pakistan a mixture of four salts; NaCl, NaSO4, CaCl2 and MgSO4 is used in a specified ratio (6: 4: 2: 1, mind that I am not sure of this ratio at present but will confirm you through a message after consulting my old published papers). You have to spread the soil in a thin layer, spray calculated salt solution almost uniformly (any part may not go hither and thither), keep mixing the soil and use all the salt solutions. Keep the soil in this position for 7-10 days (guarding outer intrusion). Homogenize the soil, get it tested for salinity level and report this created level in you data based informations. For example you targeted 5 dSm-1 but you were able to create 4.8 dSm-1, so please report 4.8 dSm-1 and not 5 dSm-1. 

I think this all information will help you.

Heelo Farook ji,

There is no feed back from your side?

Hussain sir has also indicated some methods that you can follow.

You can prepare  higher salinity water (20 EC by putting 10 g salt per liter of water) and little (to raise 0.1 EC,  needs 100 ml ) water to one pot soil (10 kg) and allow the water to dry.  

If you do not reply dont worry  !

Hello Farooq ji,

There is no feed back from your side?

Hussain sir has also indicated some methods that you can follow.

You can prepare  higher salinity water (20 EC by putting 10 g salt per liter of water) and little (to raise 0.1 EC,  needs 100 ml ) water to one pot soil (10 kg) and allow the water to dry.  

If you do not reply dont worry  !

I think the elaborate  answer provided by Dr Nazir is more wholesome , and much realistic to the work proposed . He has nicely touched upon various issues so precisely including the procedure of developing the salinity of various levels.

Dear Farooq,

Please go through all the answers and tell if you have still some questions in your mind so that researchers can halp you in this regard.

Bundle of thanks Nazir Hussain and Rajakumar Gr. I think now I will be able to prepare the salinity and start my work. 

If you feel any confusion during experimentation, please feel free to share here. Experts of the globe will definitely come forth to help you.

Sorry this is not an answer. I'm to work on this as a project but my work is on cucumber. However this material is not detailed enough on some areas. I am inducing salinity at different levels 40mM, 80mM, 120mM please how can I do this...it is a potted experiment

Please I want to induce salinity at different rates or level to some species of crops using pot experiment . I need detailed answers on how to go about it.