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On-Farm Evaluation of Aluminum Sulfate (Alum) as a Poultry Litter Amendment

Effects on Litter Properties

Department of Plant and Soil Sciences, Univ. of Delaware, Newark, DE 19717-1303

View larger version (21K): [in a new window]   Fig. 1. Relationship between water-soluble P measured colorimetrically (WS-PMR) and by inductively coupled plasma (WS-PICP). Data are all poultry litter samples collected at the end of the project.

View larger version (35K): [in a new window]   Fig. 2. The percentage of total P, As, Cu, and Zn in a water-soluble form for poultry litter samples from control and alum-treated houses at the conclusion of the study.

View larger version (28K): [in a new window]   Fig. 3. Relationship between total Al to P ratio and (a) water-soluble P measured colorimetrically (WSPMR) and (b) measured by inductively coupled plasma (WSPICP) in poultry litters at the conclusion of the study. Note that correlation coefficients only apply to data for alum-treated litters.

View larger version (25K): [in a new window]   Fig. 4. Relationship between total Al to P ratio and (a) water-soluble As, (b) water-soluble Cu, and (c) water-soluble Zn in poultry litters at the conclusion of the study. Note that correlation coefficients only apply to data for alum-treated litters.

View larger version (25K): [in a new window]   Fig. 5. Relationship, for poultry litters collected at the conclusion of the study, between (a) litter total Al to P ratio and litter NH4–N concentrations (correlation coefficient only applies to data for alum-treated litters) and (b) litter pH and litter NH4–N concentrations.