Prices for Iowa farm land and buildings continued to rise in 1957. On Nov 1. 1957, average value of the state's farm land and buildings was $226 per acre- up $6 from the same date in 1956. Values dropped somewhat in the western counties and held just about steady in the north-central area. But strong increases in eastern Iowa and a strong land market in southern Iowa more than offset the declines for an average rise of 3 percent.