If you use fertilizer, you are adding salts continually. Unless your turf is consistently 100% perfect, any problem areas may be because of a “salt problem” or better stated, a salinity problem—you just don’t know if they are from overwatering, under watering, over fertilizing, under fertilizing, incorrect fertilizer application, or some cultural ailment, etc. The …
Salinity (Electrical Conductivity)
In many cases, as moisture goes up, salts in solution go up and therefore EC goes up. But this is not always the case and EC-to-moisture ratios change from many affecting variables in turf dynamics.
It does not directly measure “Salt” (NaCl). But it does measure salinity activity by measuring EC. All salts (+ and – ions) in solution add to EC.