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Jordan University of Science and Technology (JUST) 2007

Reclamation of saline-sodic soil by gypsum and Sea Orach Artiplex halimus

Ammar Ali Ahmad Al-Balasmeh

Titre : Reclamation of saline-sodic soil by gypsum and Sea Orach Artiplex halimus

Auteur : Ammar Ali Ahmad Al-Balasmeh

Université de soutenance : Jordan University of Science and Technology (JUST)

Grade : Master of Science (MS) 2007

Présentation
The presence of high exchangeable sodium can adversely affect soil water movement, soil aeration, soil structure and plant growth. In this study, laboratory experiments were conducted to investigate the comparative efficiency of phytoremediation and gypsum treatments for their reclaiming effects on soil salinity and sodicity. Seven treatments were conducted in this experiment : control ; 25 ton ha-1 ; 50 ton ha-1 ; C.Gdw : Crop and gypsum at 12.5 ton ha-1 with distilled water ; C.Gcw : Crop and gypsum at 12.5 ton ha-1 with canal water ; Cropdw : Crop with distilled water ; cropcw : Crop with canal water. Results indicate that relative sodium removal percentage during 50 ton ha-1 treatment was similar to the removal percentage using crop and gypsum at 12.5 ton ha-1 with canal water treatment. Gypsum removed (93%) of exchangeable sodium with the highest application rate of gypsum, while crop and gypsum at 12.5 ton ha-1 removed (95%) of exchangeable sodium. Leaching the soil with canal water only (control) removed (72%) of exchangeable sodium, soil ECe was reduced from 65.3 dS m-1 to 2.52 and 3.83 dS m-1 at 50 ton ha-1 and C.Gdw respectively. The use of crop and gypsum is recommended as a favorable treatment for reclamation and saving significant amounts of gypsum and water.

Annonce (site université)

Présentation

Page publiée le 13 novembre 2016, mise à jour le 14 juin 2018