On the ground of the Central Statistical Office (GUS) data, values of investment outlays in the fields of buildings and structures, machinery and tools as well as transport equipment in agriculture have been evaluated for the period of 1995-2013. The method for converting values of the values of these outlays from current to constant prices of 1995 has been presented. In 2013 value of investments in Polish agriculture (in constant prices) was in a case of buildings and structures by 107.9%, machinery and tools – by 100.5%, and transport equipment – by 98.3% higher than in 1995. Total investments in the field of technical means (building and structures, machinery and transport equipment) increased during this period by 103.0%. Correlations between these inputs and the global production, gross value added, final and market production have been described.