Seasonal influences impact greatly on the quality of horse manure.


kick start to the fermentation process, it is also an important source of nitro- gen. At compost plants that work with 100% straw, leachate can account for up to 30% of the nitrogen. The nitrogen percentage of rich leachate can be 0.4%, however if strongly diluted by rain, rinsing water or well water it barely reaches 0.1%.


If compost made at the start of the week uses 100% leachate and as the week


There are huge differences between loads of chicken manure, so they should be mixed first.


progresses more and more water is add- ed as the leachate tank empties, the re- sult will be a difference in the nitrogen content of the compost. Evenly distrib- uting the leachate over the week, or dosing based on analysis will give great- er stability. Chicken manure


The composition of chicken manure shows huge variations. One load can contain 2-3 times more nitrogen, ash or


A mixing drum guarantees the raw materials are well-mixed.


Ò MUSHROOM BUSINESS 21


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