Soil characteristics involved in phosphorus sorption in Mollisols

CESAR E. QUINTERO; CABELLO, M.J.; GERARDO RUBIO; FLAVIO H. GUTIERREZ BOEM

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL

SOIL SCI SOC AMER

Lugar: Wisconsin; Año: 2016 vol. 80 p. 1585 - 1590

0361-5995

The role of different soil properties on defining the P sorption capacity was investigated in a group of Mollisols of the Pampean Region (Argentina). Twosingle point and three-multiple point P sorption indices were evaluated. Both simple and multiple regression models indicated that ammonium oxalate extractable Al (Alox) and ammonium oxalate extractable fe (feox) were the main properties defining P sorption. Ammonium oxalate extractable Al prevailed as the best predictor of short-term P sorption indices and feox as the best predictor for those indices that involves longer interaction periods. After Alox and feox, the best correlations were obtained for the sum of Ca and Mg. The higher P retention of soils located in the Southern part of the Region was associated with the parental material rather than with anthropogeniceffects. Obtained information can strengthen P fertilization programs byproviding a methodology to estimate fertilizer P requirements to optimizecrop yields while reducing environmental risks.p { margin-bottom: 0cm; direction: ltr; color: rgb(0, 0, 0); }p.western { font-family: "Times New Roman",serif; font-size: 12pt; }p.cjk { font-family: "Times New Roman",serif; font-size: 12pt; }p.ctl { font-family: "Times New Roman",serif; font-size: 10pt; }a:link { color: rgb(0, 0, 255); text-decoration: nonep { margin-bottom: 0cm; direction: ltr; color: rgb(0, 0, 0); }p.western { font-family: "Times New Roman",serif; font-size: 12pt; }p.cjk { font-family: "Times New Roman",serif; font-size: 12pt; }p.ctl { font-family: "Times New Roman",serif; font-size: 10pt; }a:link { color: rgb(0, 0, 255); text-decoration: noneCabello,M., F.H.Gutierrez Boem,C.E. Quintero & G. Rubio. 2016. Soil characteristics involved inphosphorus sorption in Mollisols. SoilScience Society of America Journal,enprensa,doi: 10.2136/sssaj2016.07.0235; Date posted: November 02, Q1soil sci.p { margin-bottom: 0cm; direction: ltr; color: rgb(0, 0, 0); }p.western { font-family: "Times New Roman",serif; font-size: 12pt; }p.cjk { font-family: "Times New Roman",serif; font-size: 12pt; }p.ctl { font-family: "Times New Roman",serif; font-size: 10pt; }a:link { color: rgb(0, 0, 255); text-decoration: none; Cabello,M., F.H.Gutierrez Boem,C.E. Quintero & G. Rubio. 2016. Soil characteristics involved inphosphorus sorption in Mollisols. SoilScience Society of America Journal,enprensa,doi: 10.2136/sssaj2016.07.0235; Date posted: November 02, Q1soil sci.