Continued monitoring of soil pH changes in 1999 has
indicated that much of the pH change induced by lime
occurs within the first few weeks after lime application,
and that additional lime effects in the following one to two
years are small. Without tillage, the effect of lime on soil
pH did not extend below the top two inches. Withinseason,
soil pH fluctuated by up to 0.5 units. At the same
site where soybean yields responded to the P and K starter
in 1998, the 1999 corn crop yielded 37 percent more with
starter, despite severe drought that limited corn yields to
65 bu/A. There were no interactions between lime and
starter fertilizer at any of the three sites.