Liquid animal manure is land applied using liquid manure tankers or irrigation equipment.

"Liquid manure tankers generally discharge manure from the rear of the tank on the soil surface. Alternatively, various types of soil incorporation tools may be used and are generally mounted directly to the tanker. Manure from the tank is distributed through a series of hoses and discharges through the soil incorporation tool. Soil incorporation of liquid animal manure can minimize odors and conserve nutrients. "

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Note added at 6 hrs (2010-07-26 05:32:50 GMT)
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Тоест най-лаконичният преводен вариант би бил liquid manure application.