AUTHOR=Outbakat M Barka , Choukr-Allah Redouane , EL Gharous Mohamed , EL Omari Kamal , Soulaimani Aziz , EL Mejahed Khalil 

TITLE=Does phosphogypsum application affect salts, nutrients, and trace elements displacement from saline soils?

JOURNAL=Frontiers in Environmental Science

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2022.964698

DOI=10.3389/fenvs.2022.964698

ISSN=2296-665X

ABSTRACT=Salinity and sodicity are the most agricultural challenges in arid and semi-arid regions. A pot experiment was undertaken at Mohamed 6 Polytechnic University (UM6P) in Ben Guerir Morocco, to evaluate the efficiencies of Phosphogypsum (PG) and Gypsum (G), to remove salts, nutrients and trace elements in leached water from saline and saline-sodic soils. The PG at 0, 15, 30 and 45 t/ha and G at 15 t/ha were mixed with the upper 9 cm soil in the pot before being leached. The soils were collected from Sed El Masjoune and Sidi El Mokhtar areas of morocco with ECe of 140.6 mS/cm and 11.7 mS/cm respectively. The highest doses of PG (≥30t/ha) removed significant amount of salts and nutrients. The PG was more efficient compared to G in terms of salts leaching. Quantities of trace elements in the leachate, for most analyzed elements, were below the recommended limits of drinking and irrigation water.