Doug,
Good discussion is an easy way to drag me from the cave. Spoke with deerpatch this week...he said to tell you hello!
Narrow wheels....high lbs/sq inch.....at some depth compaction will occur which is my point....best insurance is to wait for the right conditions (patience can be an illusive virtue). Balloon tires are great on spreader trucks, but when spreading pasture, stobs and other hazards can be costly.
Shallow bedrock may pose a moisture storage issue (reduced soil volume), the lateral flow of water across bedrock slows the clearance of excess water and keeps moisture near the root zone longer......that is in contrast to deep porous soils where water can do deep and fast out of root reach soon after rain events.
Shallow bedrock poses a 'slow internal drainage issue' which can affect rooting depth due to anaerobic conditions. Our base soil is what it is.....we must manage accordingly and in realism. Wish we had more time during your visit....I could have shown you the seeps which now appear due to our changes in forage/soil management....the improved water percolation has made a drastic difference in forage yield and persistence on high ground. In some areas, we will be unlikely to alleviate the internal drainage issue....which is fine as Nature will provide the plants which tolerate wet soil over time.
One of the reasons I replied to dogghr is that I am fairly close to his location. Matter of fact, I have a good friend in Durbin, WV who is employed delivering semi loads of shavings (bedding for poultry barns) to locations throughout WV and VA. Dogghr may even know where one of his sources is located. This operation brings in logs of Western Red Cedar to be used in home construction where the logs are milled to spec. 20 - 40 tons of kiln dried shavings a day is produced at times. The aroma of western RC is quite pleasing to me and I've never had any adverse reactions to it but quite a few folks will have a severe allergic reaction when exposed to the shavings/dust. This wood also has a high natural resistance to decay. The point here, is in this area it is possible to find turkey 'brooder' litter for sale which is litter that has only had one flock of turkey poults cycled for 4-5 weeks with very little actual manure. The vast majority of the bedding used in this area is locally sourced Pine species and on occasion, Poplar is used. Either way, this type turkey litter will not have the full benefit found in multi cycled 'grow out' litter.
Some of those management decisions employ the use of alum, aluminum sulfate, sodium sulfate, salt and other treatments to reduce the incidence of GD. Some are used as drying agents while other forms of litter treatments are used to produce a dramatic shift in litter pH which may reduce or inhibit microbial growth. Some of these treatments may only affect litter conditions for a short period of time. However, end-users should be made aware of all the consequences involved with these materials and that such additions may mean that some sources of litter cannot be safely applied to land. So yes, to your point of careful evaluation of what exactly you may or may not have in total value or 'cost'.
I only mention this to bring awareness to dogghr and others who may be considering this resource. I stand by my claims of the GOOD that can come from the use of poultry litter and that "knowing your source" should not be taken lightly.
Most bedding in this area is rice hulls (high in silica) due to reasonable proximity to rice growing areas of lower Mississippi delta. It would actually be closer for them to use wood shavings from timber operations in the western hardwood forest. So go figure the logistics there....suspect litter or something else of more value is being backhauled to the delta!
Wood shaving bedding is all the more reason to use no-till management. Yes, wood is slow to break down.....yet our forests are not a mile high brush pile because of soil fungi which have adapted to decay wood at the proper rate. Thus, the key to managing application of woody residues to avoid N depletion is to leave them on top of the soil surface so that fungi can degrade them from the soil upward as Nature intended! When woody residue is tilled into the soil (especially a soil lacking sufficient fungi....ie most conventionally farmed soils), N depletion is guaranteed because bacteria join in the decay and they decay things faster and use more soil N than fungi.
Terpenes and other organic solvents can be an issue with evergreen shavings....something to consider. At moderate rates no issue. because when land here is cleared of ERC the ensuing natural succession isn't hindered...instead it is robust even among the carcasses once leaves drop.
Much of the hype about litter is propaganda to promote sales of synthetic fert. Bird growers are more concerned about disease issues of natural origin than they are of in flock/in house disease issues......the issue is becoming more real as biosecurity measures are on the rise in/around houses.
Sulfates are no issue and in many cases a limiting nutrient due to stricter air quality legislation. Sodium in small amounts is a natural component of soil.....many forages are actually sodium deficient compared to animal need...some forages respond to sodium application. Aluminum is like one of the top 5 most abundant soil elements.....so unless thousands of tons of litter were to be applied, then soil aluminum status will remain unchanged.
The easiest way to avoid soil aluminum issues is to lime fields or use regenerative high density grazing to change the topsoil and plant community. Soils with >60% Ca saturation should have no aluminum toxicity issues provided internal soil drainage is optimum (ie good soil water percolation). Combining litter and lime applications can accelerate the soil building process on depleted soils...from a physical rather than a chemical (pH) standpoint.....both litter and calcium affect both the physical and biological soil aspects which many don't consider in soil management.
Back to my cave fellas!
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