Soil fixation and availability of phosphate fertilizer

Autor:	R.A. Rosell, P. Maiza, A. Miglierina, R. Baravalle
Rok vydání:	1995
Předmět:	Soil test Phosphorus Soil Science Mineralogy chemistry.chemical_element Bioavailability Nutrient Animal science chemistry Soil water Brushite Mollisol Agronomy and Crop Science Fixation (histology)
Zdroj:	Communications in Soil Science and Plant Analysis. 26:2157-2165
ISSN:	1532-2416 0010-3624
DOI:	10.1080/00103629509369436
Popis:	The addition of low quantity (up to 50 mg/kg) of phosphorus (P) to two calcareous soils in the Argentine semiarid‐subhumid pampean region increased the formation of DCPD (Brushite) and decreased the P (Paer) extractable by an anionic exchange resin. This latter effect was not observed when the quantities of added P were over 50 mg/kg. The pH decreased with P addition up to a point (50 mg/kg) after which it returned to its original value. The percentage in weight of peds smaller than 74 μm increased with the added P up to certain point which decreased to values nearing the original ones. To obtain a positive Availability Index (F1) by incubating for six months the soil with additional P, it is suggested that there are at least two points where the increase of labile P (Paer) takes place.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9c53610b68ff498bc5e3f1a2a130f7ac https://doi.org/10.1080/00103629509369436 Zobrazit plný text záznamu