Originally Posted by edwmax

Potassium:


0-0-50 MOP; Muriate of Potash; or Potassium Chloride (47% Chloride)



0-0-50 or 60 SOP; Sulfate of Potash; or Potassium Sulfate (54% SO)



13-0-46 Potassium Nitrate (aka: stump remover)





MOP is less costly and more available at the big box stores. But some plants are sensitive to the chloride and with heavy applications this could be a problem with bananas.


SOP cost a little more than MOP and the extra sulfur is plant usable.


Potassium Nitrate (Stump remover) is about $12 for a 5 lb bag. Cost less per lb if bought in larger bags at Fertilizer dealer. This can be easily dissolve in water and used to foilar feed the banana plants; or applied dry to the ground.



Note: After the banana plant has flowered it has been shown the nutrient up take by the roots greatly reduces but does not stop. Also it has been proven that foilar feeding nitrogen & potassium will benefit the plant & bunch before & after flowering.


So which type is mostly your choice and what is available.