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Progress Report of Pasture Fertilization at the Virginia Agricultural Experiment Station

Dairy Husbandry Department, Virginia Agricultural Experiment Station, Blacksburg

ABSTRACT

In April, 1930, the Dairy Husbandry Department of the Virginia Polytechnic Institute, in cooperation with the Department of Agronomy, began an investigation of fertilization of bluegrass pastures. Four 10-acre plots (10A) were laid off in a rolling field on the Smithfield farm about one mile from the campus. This land has been in sod about twenty years and had a fairly good bluegrass sod. There was a fair proportion of white clover mixed in when seasonal conditions favored its growth. A stream, overflow from several springs, flows across all of the plots and provides an abundant supply of spring water at all times. The plots were so laid out that all had the same proportion of higher land and of bottom land along the stream.

Fertilization

One ton of finely pulverized limestone was applied per acre on plots 1 and 2 in March. In addition, 500 pounds of super-phosphate, 160 pounds muriate of potash, and 200 pounds ammonium sulphate per acre were broadcast on the sod.