Phytoremediation of soils contaminated with crude and weathered oil using two rice varieties (Oryza sativa L.)
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Morales-Guzmán, Gilberto [1] ; Rivera-Cruz, María del Carmen [2] ; Ferrera-Cerrato, Ronald [2] ; Zavala-Cruz, Joel [2] ; Ramos-Reyes, Rodimiro [3]
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[1] Universidad Popular de la Chontalpa
Universidad Popular de la Chontalpa
México
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[2] Colegio de Postgraduados
Colegio de Postgraduados
México
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[3] El Colegio de la Frontera Sur (ECOSUR) Unidad Villahermosa
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- Localización: Agro Productividad, ISSN-e 2594-0252, Vol. 15, Nº. 1, 2022 (Ejemplar dedicado a: Enero), págs. 31-41
- Idioma: inglés
- Enlaces
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Resumen
ABSTR ACT Objective: To evaluate the potential for soil phytoremediation with new and weathered hydrocarbons with two rice varieties (Oryza sativa L.).
Materials and Methods: The assessed treatments were 150 mg kg1 (control soil), 30,000; 60,000 and 90,000 mg kg1 of new oil and 79,457 mg kg1 of weathered oil 1 and 42,000 of mg kg1 of weathered oil 2; they were established in a completely randomized design with 63 factorial, with four repetitions each. The evaluated variables were populations of total bacteria (colony forming units CFU per grams of dry soil), free-living nitrogen-fixing bacteria (CFU), total fungi (CFU), and total dry biomass (g). Total bacteria and fungi were quantified at the beginning of the experiment at 90 and 145 days.
Results: The highest total petroleum hydrocarbons (HTP) degradation was 73 and 72% in the 79,457 and 42,000 mg kg1 concentrations of weathered HTP 1 and 2, in the rhizosphere of rice silver line 21. The total dry biomass reported significant differences (p0.05), evidencing a lower effect in the 60,000 mg kg1concentration in new oil, which caused a 33% reduction compared to the control.
Results/Conclusions: The rice variety line 21 has a greater potential to phytoremediate soils contaminated with crude and weathered oil in field conditions in tropical areas.
