Akademik Veri Yönetim Sistemi
AUSTRALASIAN PLANT PATHOLOGY, cilt.55, sa.19, ss.2-11, 2026 (SCI-Expanded, Scopus)
Plant extracts are emerging as alternative control strategies against root-knot nematodes (RKN) due to limitations of conventional methods. The nematicidal activity of hot and cold aqueous extracts of Ricinus communis was evaluated against Meloidogyne incognita under both in vitro and in vivo conditions. The nematicidal efficacy of hot and cold aqueous extracts was assessed on second-stage juveniles (J2s) of M. incognita at concentrations (0.5, 1, 2.5, 5, 25, 50, 75, and 100%) applied in vitro. The results of the Petri experiments indicated that the hot aqueous extract did not affect M. incognita at 0.5, 1, 2.5, and 5% concentrations, while the cold aqueous extract exhibited a high suppressive effect after 72 h. Above 25% concentrations of cold aqueous extracts were observed 100% mortality of nematodes in 24 h. After 24 h of exposure of M. incognita eggs to the cold aqueous extracts recorded egg hatch inhibition of 100%. Pot experiments were carried out using two separate methodologies (covered and uncovered) and four doses (25, 50, 75 and 100% cold extracts) that showed the highest effect in Petri experiments. Pot experiments demonstrated that both methods exhibited a pronounced suppressive effect on M. incognita, commencing at the 25% concentration. Consequently, the study has demonstrated the potential efficacy of cold aqueous extracts derived from R. communis seeds in management M. incognita.