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Recommended amounts of K<sub>2</sub>O are highly variable and depend on the initial soil test, the crop to be grown, and the requested yield goal. The annual recommendation for various crops can range from 0 to almost 1,000 lb K<sub>2</sub>O/acre. However, we do caution not to apply more than 400 lb K<sub>2</sub>O/acre in any single application. And, if 300 to 400 lb of K<sub>2</sub>O/acre is applied in a single application, it is best to incorporate that fertilizer with tillage. Recommended amounts of K<sub>2</sub>O are highly variable and depend on the initial soil test, the crop to be grown, and the requested yield goal. The annual recommendation for various crops can range from 0 to almost 1,000 lb K<sub>2</sub>O/acre. However, we do caution not to apply more than 400 lb K<sub>2</sub>O/acre in any single application. And, if 300 to 400 lb of K<sub>2</sub>O/acre is applied in a single application, it is best to incorporate that fertilizer with tillage.
^  Sources of Potassium  ||| ^  Sources of Potassium  |||
-^ Material ^ Chemical Symbol ^ Typical K<sub>2</sub>O Analysis  | +^ Material ^ Chemical Symbol ^ Typical K<sub>2</sub>O Analysis  | 
-| Potassium Chloride/Potash | KCl | 60-62%  | +| Potassium Chloride/Potash | KCl | 60-62%  | 
-| Potassium Sulfate | K<sub>2</sub>SO<sub>4</sub> | 50-53%  | +| Potassium Sulfate | K<sub>2</sub>SO<sub>4</sub> | 50-53%  | 
-| Potassium-Magnesium Sulfate | K<sub>2</sub>SO<sub>4</sub> !BULLET 2MgSO<sub>4</sub> | 22%  | +| Potassium-Magnesium Sulfate | K<sub>2</sub>SO<sub>4</sub> !BULLET 2MgSO<sub>4</sub> | 22%  | 
-| Potassium Nitrate | KNO<sub>3</sub> | 44-46%  | +| Potassium Nitrate | KNO<sub>3</sub> | 44-46%  | 
-| Manure | (not applicable) | 0.4-1.0%  |+| Manure | (not applicable) | 0.4-1.0%  |
^  Potassium from Manure ((Typical analysis range))  ||| ^  Potassium from Manure ((Typical analysis range))  |||
-^ Animal Type ^ K<sub>2</sub>O (lb/ton)  || +^ Animal Type ^ K<sub>2</sub>O (lb/ton)  || 
-^ ^ From ^ To  | +^ ^ From ^ To  | 
-| Dairy | 6.3 | 9.5  | +| Dairy | 6.3 | 9.5  | 
-| Beef | 7.6 | 11.4  | +| Beef | 7.6 | 11.4  | 
-| Veal | 7.2 | 10.8  | +| Veal | 7.2 | 10.8  | 
-| Swine | 8.6 | 13.0  | +| Swine | 8.6 | 13.0  | 
-| Sheep | 15.6 | 23.4  | +| Sheep | 15.6 | 23.4  | 
-| Goat | 12.1 | 18.1  | +| Goat | 12.1 | 18.1  | 
-| Layers | 10.6 | 15.8  | +| Layers | 10.6 | 15.8  | 
-| Broilers | 10.0 | 15.0  | +| Broilers | 10.0 | 15.0  | 
-| Turkey | 13.5 | 20.3  | +| Turkey | 13.5 | 20.3  | 
-| Horse | 7.2 | 10.8  |+| Horse | 7.2 | 10.8  |
 
library/articles/potassium_basics.txt · Last modified: 2010/03/24 15:56 by bill