It is fermented .
It is stored in a process called ensilage , ensiling or silaging , and is usually made from grass crops , including maize , sorghum or other cereals , using the entire green plant ( not just the grain ) .
It is fermented and stored in a process called ensilage , ensiling or silaging , and is usually made from grass crops , including maize , sorghum or other cereals , using the entire green plant ( not just the grain ) .