Odor Control for Dry Manure
Storage Practices - Manure Additives
| Pro |
Con |
| Little or no engineering needed |
Highly variable effectiveness |
| Many options to choose from |
Manufacturer stability |
In a dilute manure handling system, bacterial populations are
more likely to occur in quantities sufficient to provide a balanced
production and utilization of intermediate degradation compounds.
Addition of supplemental bacteria or enzymes may enhance the rate
of processing because conditions are suitable for bacterial growth
and function. Enzymatic or chemical additions are more likely to
have a greater benefit on odor intensity in dilute systems than
a slurry or solid system. Unpublished field reports indicate a
direct relationship between lower levels of odor and the presence
of anaerobic photosynthetic bacterial populations in lagoons. The
anaerobic photosynthetic bacterial utilize many of the odorous
compounds for bacterial growth. Reduced odor from lagoons where
the pink-rose color is present, which is indicative of the populations,
is likely the result of degradation and utilization of such odorous
intermediates. Mode of action of many commercially available products
remains unknown, but it is possible that some enzymes enhance biological
decomposition of odorous compounds to less odorous end products.
However, recommendations for modes of action or products that are
routinely effective are not available.
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