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Table 4 Methods to evaluate P retention in soil columns

From: Existing evidence related to soil retention of phosphorus from on-site wastewater treatment systems in boreal and temperate climate zones: a systematic map

General approach

Method

Number of studies

Determining P in influent and effluent

Measure concentration of P before and after infiltration

74

Determining accumulated P in soil

Measure amount of P applied and leached

3

Measure concentration of P in soil after infiltration and compare to a control (virgin soil)

6