Chalmar Beef produces 30 000 tons of maize silage on 750 ha of high potential soil per year. To produce silage the whole maize plant is harvested and processed into 8mm pieces which is called green chop. This green chop is then compacted into bunkers and allowed to ferment. During this fermentation process the ph of the green chop falls to 3.7 where all fermentation comes to a halt. This green chop has now reached a stable state and is now called silage.
This silage can be stored for many years as long as it is not exposed to oxygen or water. One of the advantages of silage production over maize production is the fact that the whole plant (including the cob ) is harvested and consumed in contrast to maize production for humans which is very wasteful as only the cob is consumed.