Influence of compost amendments on leaching of phosphorus in a calcareous soil of South Florida Article

Shinde, D, Savabi, MR, Jayachandran, K et al. (2009). Influence of compost amendments on leaching of phosphorus in a calcareous soil of South Florida . 18(3-4), 35-41.

cited authors

  • Shinde, D; Savabi, MR; Jayachandran, K; Reed, S; Nkedi-Kizza, P; Konomi, K

authors

abstract

  • The retention and movement of water and phosphorus (P) was investigated in a calcareous soil (Krome) amended with three types of compost: 1) Bedminster (BDM)- a mixture containing 75 % clean municipal solid waste and 25 % biosolids, 2) Biosolids (BSD) and 3) Clean organic waste (COW). The study demonstrated that 55(nocompost)-163(BSD) % of more than applied P was leached, which included native soil P, during simulated rain. Phosphorus leached out at a slower rate (BSD-9 %, COW-12 %, BDM-38 % less) from the compost amended soil during initial rainfall. Soil amended with BDM showed lowest water movement and P leaching rate compared to soil amended with other composts. BDM had the highest P adsorption among different composts. A higher P adsorption was observed in Krome soil than that in BSD and COW composts. An equivalent of 93 % of applied P to different treatments was leached from the control showing a high presence of soluble native P. This study showed that adding 134 t ha-1 of BDM compost to the calcareous soil increased soil water-holding capacity, reduced water movement and had the least leaching potential for P. ©2009 AAAE.

publication date

  • December 1, 2009

start page

  • 35

end page

  • 41

volume

  • 18

issue

  • 3-4