Dear Gabriel,

Please have a look at useful ResearchGate link and PDF attachment.

https://www.researchgate.net/publication/270478943_Soil_Electrical_Conductivity_as_a_Crop_Productivity_Measure_for_Claypan_Soils

Good luck!

check this links maybe help you

Article The relationships between electrical conductivity of soil an...

https://www.veristech.com/images/ecfaq/EC_yld_analysis%20paper_5thconf.pdf

https://www.agriculturejournals.cz/publicFiles/01931.pdf

http://extension.missouri.edu/sare/documents/ECclaypansoils2012.pdf

https://dl.sciencesocieties.org/publications/aj/abstracts/95/3/483

There is a clear link, as all the literature her shows.

Check this document :

Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56.

You find your request here. Good luck

Salt content of soils and irrigation water is measured by electrical conductivity(EC). Dissolved salts in water conduct electricity, and therefore, the salt content in water is directly related to EC. In the case of soils, EC more than 4dS/m is considered saline, and irrigation water containing salts with electrical conductivity less than 1.5 dS/m is low saline water, which is suitable for most soils and crops.

It is a good question , read pages 247-257 from Hans Lamber book Plant Physiological Ecology.

Electrical conductivity is a measure of soil salinity so the more salinity the soil is transformed from the productive soil to the less productive soil, then the relationship is inverse. Thus salinity affects the nutrient readiness in the soil and prevents its absorption by the plant.

Please note that EC is related to total dissolved salts (TDS) in water. TDS can be estimated by its relation to electrical conductivity (ECiw in dS/m) given as:

When ECw < 5 dS/m,

TDS (mg/L) = 640 x ECw (dS/m),

TDS(%) = 0.64X x ECw (dS/m)

1dS./m= 640ppm = 640mg/L= 0.64g/L= 0.064%

When ECw is greater than 5 dS/m, the following relationship may be used

TDS (mg/L) = 800 x ECw (dS/m)

The electrical conductivity (one measure of salt content) has almost zero effect on plant growth until it gets too high - then it has negative effects due to too much salt, which varies considerably by species

A study on grain sorghum growing in a field with variable salinity may help you

what is the coefficient of crelation between electric conductivity and salinity?

There is a negative relationship between EC and crop growth. the relationship is more negative with salt sensitive plants.

Please read the following:

Conference Paper Sweet pepper crop responses to greenhouse climate manipulati...