pH and electrical conductivity (EC) represent two of the most important diagnostic measurements for greenhouse producers. describe why they are important and identify other relevant properties that should be monitored. 

Using an inert media such as perlite a producer notices tipburn on the young growing leaves of tomatoes plants. The plants are fertilized with a nutrient solution of pH 5.8 and EC 4.2 dS/m. describe what is the cause of the tipburn and how it can be treated.
250 word limit