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Seepage Losses from a Silo^*

Massachusetts Agricultural Experiment Station

ABSTRACT

Seepage losses in making silage have long been a subject for speculation and are mentioned frequently in earlier silage investigations, but relatively few actual measurements of the extent of the loss have been made. The earliest quantitative record we have been able to find is that reported by Shaw et al. (4), who collected the juice from a 150-ton silo filled with corn in 1914 and again in 1915. The weights of juice collected varied from 2579 pounds the first year to 9495 pounds the second year. Nitrogen losses calculated as protein were 28.9 and 150.8 pounds respectively. Other constituents of the juice apparently were not determined. In 1923 Godden (2) reported on the composition of drainage liquor from silage made from a mixture of beans, peas, oats and tares in a 12-foot, 110-ton silo. His results indicated a material loss in nitrogenous compounds and minerals in the liquid. Recently workers at the New Jersey Experiment Station (1) have stated that losses from this source varied from 2.25 to 18 per cent of the ensiled material.

^* Contribution No. 547 of the Massachusetts Agricultural Experiment Station.