is a kind of silage
. The AIV liquid is added to the green fodder
to improve the storage. This is especially important during long winters. The process includes adding a dilute hydrochloric
or sulfuric acid
to newly stored grain
. Increased acidity stops harmful fermentation
and has no adverse effect on the nutritive value of the fodder or the animals it is fed to.
researcher of chemistry and agriculture Artturi Virtanen
invented the method and named it after his initials (A
irtanen). First commercial AIV fodder products were introduced in 1929 and the method was patented in 1932. In 1945 Virtanen became a Nobel Prize
laureate in chemistry "for his research and inventions in agricultural and nutrition chemistry, especially for his fodder preservation method" (AIV Fodder).
Modern version of the AIV liquid consist of 76% formic acid
, 5.5% ammonium formiate
, and water
. The liquid is strongly acidic and eats the skin. Thus care is needed in the handling of the liquid.
In the early days the green fodder was dropped into a hole dug into the ground and the AIV liquid was poured on top of it. Today AIV fodder is created automatically by the harvesting machinery. During the process the liquid is added to the green fodder. 3000 kg of green fodder requires about 5 liters of AIV liquid. The ready AIV fodder may irritate skin... Read More