2026-03-16 ペンシルベニア州立大学(Penn State)
＜関連情報＞
- https://www.psu.edu/news/research/story/soil-additive-devised-penn-state-researchers-may-cut-farm-phosphorus-runoff
- https://acsess.onlinelibrary.wiley.com/doi/10.1002/ael2.70046?utm_source=researchgate.net&utm_medium=article
RhizoSorbの有効成分は、鶏糞施用後の土壌中の水溶性リンを低減します RhizoSorb active ingredient reduces water-extractable soil phosphorus following poultry litter applications
Jesen R. Hosch, Steve Levitsky, Taylor Strehl, Pauline Welikhe, Zachary P. Sanders, Charles M. White
Agricultural & Environmental Letters Published: 17 December 2025
DOI:https://doi.org/10.1002/ael2.70046
Abstract
Manure applications can be a source of phosphorus (P) in runoff. This study evaluated whether RhizoSorb, a modified aluminum oxide soil amendment, could reduce water-extractable P (WEP) in the 0- to 7.5-cm soil depth after poultry litter applications. RhizoSorb was applied once at the beginning of the experiment at three rates followed by 3 years of poultry litter applied at three rates in split-plots of each RhizoSorb rate. Poultry litter applications increased the WEP of soil sampled in the fall of each year, with P concentration increasing as a function of litter application rate and years of application. RhizoSorb decreased WEP between 26% and 53% in the first and second year of the study. These results suggest that RhizoSorb may have potential to reduce soluble P losses from poultry litter applications, but further research to measure P losses from in situ runoff is necessary for confirmation.
