Results of an experiment conducted in 1968 at Princeton, Kentucky on low phosphate soil showed that surface-applied phosphorus was sufficiently available to no-till corn to produce good yields. This experiment was repeated again in the 1969 growing season with the results well in line with those reported for 1968 in Agronomy Research (Misc. 377) pages 41-43.
Ragland, John L.; Masterson, John; and Belcher, C. R., "Fertilizing No-Till Corn" (1970). Agronomy Notes. 175.