110f4388_rition___AskMax_CountryMax_com__Function
[Primary Nutrients] Potassium [Deficiency Symptoms] Reduced yields; Spotted or curled leaves; Weak root system [*Solutions] Sulfate of Potash, Sulfate of Potash Magnesia, Muriate of Potash, Greensand [Function] 
Overall hardiness & disease resistance
Plant Nutrition - AskMax.CountryMax.com
Function