. Agriculture for beginners. s willtake quite as much interest in the lesson as the pupil takes. THE SILO A silo is a room or tank in which green fodders are pre-served for feeding purposes. Usually it is shaped like awater tank. It is built of cement, staves, boards, stone, brick,concrete blocks, or tile. Ensi-lage is the name of the mate-rial preserved in a silo — usuallyit is called silage. More than a hundred yearsago some farmers in Europelearned that green fodder, putinto an underground pit andcovered with soil to exclude theair, would not decay and wasgreatly relished by farm
. Agriculture for beginners. s willtake quite as much interest in the lesson as the pupil takes. THE SILO A silo is a room or tank in which green fodders are pre-served for feeding purposes. Usually it is shaped like awater tank. It is built of cement, staves, boards, stone, brick,concrete blocks, or tile. Ensi-lage is the name of the mate-rial preserved in a silo — usuallyit is called silage. More than a hundred yearsago some farmers in Europelearned that green fodder, putinto an underground pit andcovered with soil to exclude theair, would not decay and wasgreatly relished by farm was the beginning ofsilage making. It was not, how-ever, until a little more thanforty years ago that this proc-ess was introduced into there it came to this country, and has spread until nowthere are many silos in every state in the Union, and thou-sands are being built every year. In some states, especiallythose in which dairying is the chief industry, more than onehalf of the corn grown is made into Fig. 34. Making a Silo 46 AGRICULTURE FOR BEGINNERS How Silage keeps. It may seem strange that such mate-rial as green corn, sorghum, kaffir, and milo will keep in thesilo, when, as we all know, it will spoil or decay if throwninto a pile in the open air. A silo is nearly air-tight. Very little air can get into themass of silage after it settles, and this is one of the reasonswh)- it keeps. But of really more importance is the factthat when the green corn is ready to be put into the silo, itcontains some sugar. Green cornstalks run through a canemill would give a thick greenish liquid that is sweet andsmells like honey. This liquid is about four parts sugar toevery hundred parts of juice. Almost as soon as this greencorn is put into the silo it begins to ferment. The sugar issoon changed into acid. While there are several acids thereare only two about which we are concerned now. One ofthese is called lactic acid, which is well known as a part ofsour milk a
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