@article{kulesza_maguire_xia_ray_knowlton_2022, title={Effect of temperature, pH, and soil texture on pirlimycin fate in dairy manure-amended soils}, volume={11}, ISSN={["1537-2537"]}, url={https://doi.org/10.1002/jeq2.20410}, DOI={10.1002/jeq2.20410}, abstractNote={Abstract}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Kulesza, Stephanie B. and Maguire, Rory and Xia, Kang and Ray, Partha and Knowlton, Katharine}, year={2022}, month={Nov} }
 @article{zhang_antonangelo_grove_osmond_slaton_alford_florence_huluka_hardy_lessl_et al._2021, title={Variation in soil-test-based phosphorus and potassium rate recommendations across the southern USA}, volume={6}, ISSN={["1435-0661"]}, DOI={10.1002/saj2.20280}, abstractNote={Abstract}, journal={SOIL SCIENCE SOCIETY OF AMERICA JOURNAL}, author={Zhang, Hailin and Antonangelo, Joao and Grove, John and Osmond, Deanna and Slaton, Nathan A. and Alford, Shannon and Florence, Robert and Huluka, Gobena and Hardy, David Herring and Lessl, Jason and et al.}, year={2021}, month={Jun} }
 @article{leytem_kwanyuen_plumstead_maguire_brake_2008, title={Evaluation of phosphorus characterization in broiler ileal digesta, manure, and litter samples: P-31-NMR vs. HPLC}, volume={37}, ISSN={["1537-2537"]}, DOI={10.2134/jeq2007.0134}, abstractNote={Abstract}, number={2}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Leytem, A. B. and Kwanyuen, P. and Plumstead, P. W. and Maguire, R. O. and Brake, J.}, year={2008}, pages={494–500} }
 @article{plumstead_leytem_maguire_spears_kwanyuen_brake_2008, title={Interaction of calcium and phytate in broiler diets. 1. Effects on apparent prececal digestibility and retention of phosphorus}, volume={87}, ISSN={["1525-3171"]}, DOI={10.3382/ps.2007-00231}, abstractNote={Phytate P utilization from soybean meal (SBM) included in broiler diets has been shown to be poor and highly dependent on dietary Ca intake. However, the effect of Ca on P utilization and on the optimal ratio of Ca to nonphytate P (Ca:NPP) when diets contained varying levels of phytate has not been clearly shown and was the objective of this research. A factorial treatment structure was used with 4 dietary Ca levels from 0.47 to 1.16% and 3 levels of phytate P (0.28, 0.24, and 0.10%). Varying dietary phytate P levels were obtained by utilizing SBM produced from 3 varieties of soybeans with different phytate P concentrations. Ross 508 broiler chicks were fed 1 of 12 diets from 16 to 21 d of age. Excreta were collected from 16 to 17 d and from 19 to 20 d of age and ileal digesta was collected at 21 d of age. Apparent prececal P digestibility decreased when dietary Ca concentration increased and was higher when diets contained low-phytate SBM. The apparent digestibility of Ca and percentage of phytate P hydrolysis at the distal ileum were not reduced when dietary phytate P concentration increased. Including low-phytate SBM in diets reduced total P output in the excreta by 49% compared with conventional SBM. The optimum ratio of Ca:NPP that resulted in the highest P retention and lowest P excretion was 2.53:1, 2.40:1, and 2.34:1 for diets with 0.28, 0.24, and 0.10% phytate P. These data suggested that increased dietary Ca reduced the extent of phytate P hydrolysis and P digestibility and that the optimum Ca:NPP ratio at which P retention was maximized was reduced when diets contained less phytate P.}, number={3}, journal={POULTRY SCIENCE}, author={Plumstead, P. W. and Leytem, A. B. and Maguire, R. O. and Spears, J. W. and Kwanyuen, P. and Brake, J.}, year={2008}, month={Mar}, pages={449–458} }
 @article{leytem_plumstead_maguire_kwanyuen_burton_brake_2008, title={Interaction of calcium and phytate in broiler diets. 2. Effects on total and soluble phosphorus excretion}, volume={87}, ISSN={["0032-5791"]}, DOI={10.3382/ps.2007-00229}, abstractNote={Dietary Ca has been reported to influence the amount of phytate excreted from broilers and affect the solubility of P in excreta. To address the effects of dietary Ca and phytate on P excretion, 12 dietary treatments were fed to broilers from 16 to 21 d of age. Treatments consisted of 3 levels of phytate P (0.10, 0.24, and 0.28%) and 4 levels of Ca (0.47, 0.70, 0.93, and 1.16%) in a randomized complete block design. Feed phytate concentrations were varied by formulating diets with 3 different soybean meals (SBM): a low-phytate SBM, a commercial SBM, and a high phytate Prolina SBM having phytate P concentrations of 0.15 to 0.51%. Fresh excreta was collected from cages during 2 separate 24-h periods; collection I commenced after the start of dietary treatments (16 to 17 d) and collection II followed a 3-d adaptation period (19 to 20 d). Ileal samples were also collected at 21 d. Excreta samples were analyzed for total P, water soluble P (WSP), and phytate P, whereas ileal samples were analyzed for total P and phytate P. Results indicated that excreta total P could be reduced by up to 63% and WSP by up to 66% with dietary inclusion of low-phytate SBM. There was a significant effect of dietary Ca on both the excreta WSP and the ratio of WSP:total P. As dietary Ca increased, the excreta WSP and WSP:total P decreased, with the effects being more pronounced following a dietary adaptation period. There was a linear relationship between the slope of the response in WSP to dietary Ca and feed phytate content for excreta from collection II (r(2) = 0.99). There was also a negative correlation between excreta phytate concentration and excreta WSP during both excreta collections. The response in WSP to dietary manipulation was important from an environmental perspective because WSP in excreta has been related to potential for off-site P losses following land application.}, number={3}, journal={POULTRY SCIENCE}, author={Leytem, A. B. and Plumstead, P. W. and Maguire, R. O. and Kwanyuen, P. and Burton, J. W. and Brake, J.}, year={2008}, month={Mar}, pages={459–467} }
 @article{ruiz_ruiz_gernat_grimes_murillo_wineland_anderson_maguire_2008, title={The effect of quicklime (CaO) on litter condition and broiler performance}, volume={87}, ISSN={["0032-5791"]}, DOI={10.3382/ps.2007-00101}, abstractNote={High levels of phosphorus and pathogens in runoff are 2 major concerns following manure applications to fields. Phosphorus losses from fields following manure applications have been linked to the solubility of phosphorus in manure; therefore, by decreasing manure phosphorus solubility, a decrease in phosphorus loss in runoff should be apparent. The objective of this research was to develop a process using quicklime that would result in reduced phosphorus solubility and bacteria counts in broiler litter. The 4 litter treatments evaluated were T1, new wood shavings without the addition of quicklime; T2, used, untreated broiler litter; T3, used litter with 10% quicklime (based on the weight of the litter); and T4, used litter with 15% quicklime (based on the weight of the litter). Body weight, cumulative feed consumption, and feed conversion (feed:BW) were determined on a weekly basis through 42 d of age. Mortality was recorded daily. Carcass weights and percentages of carcass yield without giblets were determined prechill. Litter pH, total phosphorus, nitrogen, soluble phosphorus, litter moisture (%), and total plate counts were measured for each litter treatment on d 7 and 42 after bird placement. No significant differences were found for BW, feed consumption, feed conversion, mortality, carcass weight, or carcass yield. No breast or footpad blisters were observed. On d 7, 15% quicklime had higher (P < 0.001) pH (11.2) when compared with the other treatments. Percentages of phosphorus and nitrogen were lower (P < 0.001) for new wood shavings in comparison with the used litter treatments. Soluble phosphorus (ppm) was lower (P < 0.001) for 15% quicklime (2.75) when compared with new wood shavings (42.2), untreated broiler litter (439.2), and 10% quicklime (35.0). Although not significant, 15% quicklime had lower total plate counts (cfu/g) in comparison with the other treatments on d 1 and 10 postmixing and at 7 d after bird placement. Litter conditions on d 42 after bird placement were similar. We concluded that the use of quicklime as a treatment for broiler litter would initially reduce nitrogen and soluble phosphorus and bacteria counts without negatively affecting bird productivity.}, number={5}, journal={POULTRY SCIENCE}, author={Ruiz, V. and Ruiz, D. and Gernat, A. G. and Grimes, J. L. and Murillo, J. G. and Wineland, M. J. and Anderson, K. E. and Maguire, R. O.}, year={2008}, month={May}, pages={823–827} }
 @article{maguire_crouse_hodges_2007, title={Diet modification to reduce phosphorus surpluses: A mass balance approach}, volume={36}, ISSN={["0047-2425"]}, DOI={10.2134/jeq2006.0551}, abstractNote={Abstract}, number={5}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Maguire, R. O. and Crouse, D. A. and Hodges, S. C.}, year={2007}, pages={1235–1240} }
 @article{leytem_plumstead_maguire_kwanyuen_brake_2007, title={What aspect of dietary modification in broilers controls litter water-soluble phosphorus: Dietary phosphorus, phytase, or calcium?}, volume={36}, ISSN={["1537-2537"]}, DOI={10.2134/jeq2006.0334}, abstractNote={ABSTRACT}, number={2}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Leytem, A. B. and Plumstead, P. W. and Maguire, R. O. and Kwanyuen, P. and Brake, J.}, year={2007}, pages={453–463} }
 @article{bond_maguire_havlin_2006, title={Change in soluble phosphorus in soils following fertilization is dependent on initial Mehlich-3 phosphorus}, volume={35}, ISSN={["1537-2537"]}, DOI={10.2134/jeq2005.0404}, abstractNote={ABSTRACT}, number={5}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Bond, C. Ryan and Maguire, R. O. and Havlin, J. L.}, year={2006}, pages={1818–1824} }
 @article{baum_pierzynski_kleinman_kovar_maguire_moore_zhang_2006, title={Evaluating the influence of storage time, sample-handling method, and filter paper on the measurement of water-extractable phosphorus in animal manures}, volume={37}, ISSN={["1532-2416"]}, DOI={10.1080/00103620500449328}, abstractNote={Abstract Surface‐applied manures create a potential phosphorus (P) runoff hazard, especially when unincorporated. In such cases, the concentration of water‐extractable P in the manure has been correlated to soluble P concentrations in runoff. This study evaluated the influence of holding time, sample‐handling procedure, and filtration method on measurement of the water‐extractable P content of manures in a 3×3×2 factorial arrangement of treatments. A two‐way interaction between holding time and sample‐handling procedure occurred for most samples. Six samples had water‐extractable P concentrations that were less than or equal to dried and dried/ground treatments. Only one sample had higher water‐extractable P concentrations for fresh than for dried and dried/ground treatments. When significant differences occurred as a result of the filtration method, results for Whatman No. 40 filters, with a larger pore size than 0.45 µm nitrocellulose membranes, were usually higher. There was no significant difference in the coefficient of variation across sample‐handling procedures, suggesting that efforts to dry and/or grind samples were not needed. These results support the adoption of a standardized protocol for measuring water‐extractable P in manures that represents the appropriate balance between the ease of implementation and the strength of the correlation to P runoff concentrations.}, number={3-4}, journal={COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS}, author={Baum, K and Pierzynski, G and Kleinman, P and Kovar, J and Maguire, R and Moore, P and Zhang, TQ}, year={2006}, pages={451–463} }
 @article{maguire_plumstead_brake_2006, title={Impact of diet, moisture, location, and storage on soluble phosphorus in broiler breeder manure}, volume={35}, ISSN={["0047-2425"]}, DOI={10.2134/jeq2005.0435}, abstractNote={ABSTRACT}, number={3}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Maguire, RO and Plumstead, PW and Brake, J}, year={2006}, pages={858–865} }
 @article{maguire_hesterberg_gernat_anderson_wineland_grimes_2006, title={Liming poultry manures to decrease soluble phosphorus and suppress the bacteria population}, volume={35}, ISSN={["1537-2537"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33646558633&partnerID=MN8TOARS}, DOI={10.2134/jeq2005.0339}, abstractNote={ABSTRACT}, number={3}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Maguire, R. O. and Hesterberg, D. and Gernat, A. and Anderson, K. and Wineland, M. and Grimes, J.}, year={2006}, pages={849–857} }
 @article{mcgrath_sims_maguire_saylor_angel_turner_2005, title={Broiler diet modification and litter storage: Impacts on phosphorus in litters, soils, and runoff}, volume={34}, ISSN={["1537-2537"]}, DOI={10.2134/jeq2004.0413}, abstractNote={ABSTRACT}, number={5}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={McGrath, JM and Sims, JT and Maguire, RO and Saylor, WW and Angel, CR and Turner, BL}, year={2005}, pages={1896–1909} }
 @article{maguire_dou_sims_brake_joern_2005, title={Dietary strategies for reduced phosphorus excretion and improved water quality}, volume={34}, ISSN={["1537-2537"]}, DOI={10.2134/jeq2004.0410}, abstractNote={ABSTRACT}, number={6}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Maguire, RO and Dou, Z and Sims, JT and Brake, J and Joern, BC}, year={2005}, pages={2093–2103} }
 @article{maguire_sims_applegate_2005, title={Phytase supplementation and reduced-phosphorus turkey diets reduce phosphorus loss in runoff following litter application}, volume={34}, number={1}, journal={Journal of Environmental Quality}, author={Maguire, R. O. and Sims, J. T. and Applegate, T. J.}, year={2005}, pages={359–369} }
 @article{kleinman_sharpley_veith_maguire_vadas_2004, title={Evaluation of phosphorus transport in surface runoff from packed soil boxes}, volume={33}, ISSN={["1537-2537"]}, DOI={10.2134/jeq2004.1413}, abstractNote={ABSTRACT}, number={4}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Kleinman, PJA and Sharpley, AN and Veith, TL and Maguire, RO and Vadas, PA}, year={2004}, pages={1413–1423} }
 @article{maguire_sims_saylor_turner_angel_applegate_2004, title={Influence of phytase addition to poultry diets on phosphorus forms and solubility in litters and amended soils}, volume={33}, ISSN={["1537-2537"]}, DOI={10.2134/jeq2004.2306}, abstractNote={ABSTRACT}, number={6}, journal={JOURNAL OF ENVIRONMENTAL QUALITY}, author={Maguire, RO and Sims, JT and Saylor, WW and Turner, BL and Angel, R and Applegate, TJ}, year={2004}, pages={2306–2316} }