Soil-pH June, 1986 S Amm. Nitrate M Amm. Sulfate Dec, 1988 200 400 600 800 0 200 Figure 5. Soil pH in 1986 Nitrogen Rate (Ibs/acre) of coastal bermudagrass plots as a function of N-rate and N-source and 1988. I 0 400 600 800