Why Dry Manure?

Raw manure erosion

Raw manure erosion

Crena Resources surveyed many qualified individuals within agricultural circles (particularly in the pork producing sector), to ascertain the viability of our technology and its potential impact on manure management practices. Its ability to simplify manure handling and diminish environmental risk was two important considerations.

A paper authored and published by recognised expert on soil and soil fertility, J. Hatfield ( Laboratory Director, USDA-ARS, National Soil Tilth Laboratory, Ames, Iowa) and which summarized research by apx 150 prominent scientists on the subject of the value of manure, specifically dry manure, is referenced. It defines and describes the foundation on which Crena Resources developed a technology to answer their call.

Selected extracts from Mr. Hatfield's paper; Value of Manure as a Soil Resource - Need to Preserve Manure Nutrients. are quoted herein;

  • Animal production agriculture in the United States has changed rapidly in the last 10 years as both the number of animals produced and the number of large production facilities have dramatically increased.....

  • Continued increases in the number of concentrated animal feeding operations (CAFO's) challenges our understanding of how to effectively deal with the volume of manure generated by these facilities and all of animal production....

  • Manure hasn't changed, but our attitude has significantly changed about its value and role in agricultural production....

  • These studies suggest there is a large untapped potential for the profitable use of manure nutrients in crop production across the United States....(and an even larger potential if it can be dried.)

  • One of the major challenges to be faced in the United States is how do we "rediscover" the value of manure and develop systems that preserve the nutrients found in fresh manure and not allow the nitrogen to escape into the atmosphere. This report is based on a survey of the available literature on the beneficial impact of manure on the soil and the benefit to crop production....

  • They concluded that fresh manure has a value as a soil amendment to supply other nutrients and promote changes in organic matter content in addition to nutrient supply....

  • CONCLUSIONS
    Manure is a valuable and under-appreciated soil resource. The current attitude is to treat manure as a waste and not consider its value on increasing the quality of the nation's soil resource. There is ample documentation that manure can increase the quality of the soil, enhance and stabilize crop production, and be managed without imposing an environmental risk. The challenge that is before us is to develop manure handling systems that eliminate the loss of nitrogen to atmosphere and retain the nutrients within the manure. This has to be coupled with manure application systems that effectively place the manure in the soil to eliminate potential runoff or volatilization of N to the atmosphere. These systems can be developed if we utilize our imagination and place the proper value on manure that it deserves.....

Dry spreading

Dry spreading

Most if not all challenges identified by various researchers is associated with the handling and use of manure that derives from the fact that raw manure is highly liquid. The Crena technology is uniquely developed to recover solids from liquid, capture the nutrient before it degrades through biological activity and deliver an easily manageable material, which is the universal quest.

The Crena mobile dryer is the only vehicle capable of delivering this technology to the farm and not force the farm to transport waste to the technology.

 
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