Sooksawat N.Adsatroo S.Bunmanat S.Chittwanij A.Vangnai A.Kongtip P.Woskie S.Inthorn D.Mahidol University2024-11-252024-11-252024-10-01ScienceAsia Vol.50 No.5 (2024)15131874https://repository.li.mahidol.ac.th/handle/20.500.14594/102164Phytoremediation of pesticide residue has been an efficient method for the removal of soil contaminants. This research examined the ability of sunn hemp to remove carbaryl residue in carbaryl-contaminated soil from the field. The sunn hemp plants were grown in soil contaminated with carbaryl that had been spiked at 73.5 and 147.25 mg/kg for 0, 4, 8, and 12 days. The results showed that in a soil pot system, sunn hemp could significantly increase shoot length (1.9-fold) and leaf number (1.9-fold) at a carbaryl concentration of 147.25 and 73.5 mg/kg, respectively, from day 4 to day 12 of cultivation. Although the plant could grow, carbaryl toxicity caused a significant decrease in the total chlorophyll (2.8-fold) and carotenoid (3.5-fold) contents when exposed to the high carbaryl concentration of 147.25 mg/kg from day 4 to day 12 of cultivation. Notably, carbaryl removal in the soil containing carbaryl at 73.5 and 147.25 mg/kg achieved residual levels of 0.0–3.8 mg/kg in the soil containing sunn hemp after cultivation for 4, 8, and 12 days. Carbaryl could be accumulated in the leaves (0.00–0.30 mg/kg) and roots (0.12–4.44 mg/kg) of sunn hemp grown in contaminated soil after 12 days of cultivation. Carbaryl could be degraded to 1-naphthol in the soil and plant. The results confirmed that sunn hemp could enhance carbaryl removal from contaminated soil based on phytoaccumulation and possible phytodegradation abilities.MultidisciplinaryArticleSCOPUS10.2306/scienceasia1513-1874.2024.0892-s2.0-85209574471