Long-Term Dynamics of Labile and Stable Phosphorus Following Poultry Litter Application to Pasture Soils

Autor:	Zachary N. Senwo, Irenus A. Tazisong, Zhongqi He
Rok vydání:	2012
Předmět:	geography geography.geographical_feature_category Phosphorus Soil Science chemistry.chemical_element Manure Pasture chemistry.chemical_compound chemistry Agronomy Sodium hydroxide Soil water Leaching (agriculture) Surface runoff Agronomy and Crop Science Poultry litter
Zdroj:	Communications in Soil Science and Plant Analysis. 43:2835-2850
ISSN:	1532-2416 0010-3624
DOI:	10.1080/00103624.2012.728262
Popis:	A major source of runoff phosphorus (P) from agricultural soils is land-applied animal manure. Our work reports P levels in pasture soils in northern Alabama affected by long-term (0–20 years) application of poultry litter (PL). Sequential fractionation revealed different buildup patterns of labile and stable P fractions in these soils. Phosphorus built up in subsurface (20–40 cm and 40–60 cm deep) soils with lower application rates than P accumulated in surface (0–20 cm deep) soils, indicating a greater potential for surface runoff than leaching from these pasture fields. Correlation analysis of the surface soils showed levels of stable P extractable by sodium hydroxide (NaOH) were related to the cumulative amount of PL applied. The level of water-extractable P increased because PL application was significantly related to the number of years the soil receiving PL, not the annual application rate or the cumulative amount of PL applied.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a686bcb4565ea28d262c608e8e2dc467 https://doi.org/10.1080/00103624.2012.728262 Zobrazit plný text záznamu