gaseous manure.jpg
hog farm buildings_Darwin Brandis_iStock_Getty Images-951798010.jpg
nhf-npb-hoffman-farm-pa.jpg
A tractor-mounted pump agitating manure in a pit below a hog barn.
Applying hog manure using a drag line system into a field of small grain stubble.
Applying hog manure using a drag line system into a field of small grain stubble.
Closeup of manure application