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SL 299: Are Alum-Based Drinking Water Treatment Residuals Safe for Land Application?

Fig. 1. Effects of Al-WTR and P fertilizer rates on dry matter yields of Bahiagrass and ryegrass. Treatments having the same letter(s) are not different by the Tukey multiple comparison at significance level (?) of 0.05. (Oladeji et al., 2006)