Fig. 1. Concentration of soil Bray-1 P from 0 to 1 cm sampling depth compared with a 0 to 7 cm sampling depth. Samples taken at the time of simulated rainfall in July 1993 and July 1994. Recommended P fertilizer was broadcast in the fall of 1993.
Fig. 1. Concentration of soil Bray-1 P from 0 to 1 cm sampling depth compared with a 0 to 7 cm sampling depth. Samples taken at the time of simulated rainfall in July 1993 and July 1994. Recommended P fertilizer was broadcast in the fall of 1993.