Assertion: liquid manure | /r/HasProperty | mixed with straw
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Source sentences:
text: Liquid manures, such as pig and dairy cattle manures, should be mixed with a carbon-rich, absorbent material such as straw, saw dust, shredded cardboard etc and allowed to “pre-compost”, or at least age, for a period of time before use (how long will depend on your intended use, as discussed earlier).