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The Potassium Nitrate Association (PNA) started in 2008 as a non-profit association of potassium nitrate producers. It’s the portal for all the agronomic and economic advantages of potassium nitrate in crop production systems, throughout the world.












 

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Greater rice grain yield at increased number of foliar potassium nitrate applications. Read more ...
The effect of nitrate/ammonium/urea proportions and potassium concentrations on the production of tomato seedlings. Read more ...