Valuable Soil Amendment
The pork industry is unique for the way CAFO’s and independent farmers house and raise hogs.
Both concentrate large volumes manure into pit or lagoon containment. Feed formulations vary according to the preference of each farmer and affect the level of nutrient contained in fecal solids. This does not impact the suitability of hog manure to act as viable soil amendment, but the way in which it is stored, and its condition at the time it is disposed on a field, does have a significant impact on its capability to deliver sufficient nutrient to support a crop. At best it can only be relied upon to supplement chemical fertilizer applied as the primary source of NP&K.
This fact has been proven by many independent laboratories and agricultural schools that have analyzed manure as a natural soil enhancing medium.
Warnings to the following effect are now posted on most Lab Analysis reports; “Material with less than 15% dry matter is generally liquid and only 40-60% of the nitrogen becomes available within one year of application. The remainder may or may not ever become available”.
Translation: 1% - 2% solid manure slurry pumped from storage containment is basically dirty water.
The quantity of mineral and therefore the soil enhancing value of dried manure solid as recovered by the Crena dryer overcomes the cause of nutrient dilution and degradation by removing the high volume of water.
The sooner the water is removed post excretion, the greater the volume of Nitrogen and other essential mineral is recovered.
Data provided in two independent lab reports each analyzing 10 samples of fresh manure from four separate hog barns over a 17 week period, confirmed that dried manure will contain the following volumes of NPK mineral per ton of dry solid;
|Nitrogen (N):||396 lbs|
|Phosphate (P2O5):||185 lbs|
|Potassium (K):||146 lbs|
This is comparable to that delivered in apx 97,500 gallons of raw manure slurry with a solids ratio of 2%