Manure:
Higher nutrient content (build up of Phosphorus)
Time/labor less
potential to transmit salmonella/diseases
weed seed introduction
need a large volume and space
can be to hot and "burn" plants (concentration of nutrients too high)
pay attention to what the anima's manure looks like- its a big indicator of health
Compost:
expensive
less run off than manure
less pathogens
slow release of nutrients
Carbon: Nitrogen 25:1
static pile: 131-170 degrees for 3 days windrow system: 15 days and turn the pile 5x within that widow of time, plus record temperature!
static pile considered "raw manure" an active pile has 40-60% moisture (dig in 1 ft. and should feel moisture drip with a squeeze); pH 6.5-8
Best Practices:
spread on hay and pasture fields (return nutrients to source)
best to spread in the fall
don't apply to frozen ground (run off)
raw manure must be incorporated 120 days prior to harvest or 90 days if the edible portion doesn't touch the soil
nutrient value of manure is highly variable - depends on food, soil food was grown on, species, type of bedding
Additional Reading: Nitty-Gritty Shitty, Holy Shit By: Gene Logsdon