Qutiaba Hassoud^(1)*

(1) Department of plan protection, Faculty of Agriculture, Damascus University, Damascus, Syria.

(*Corresponding author: Qutiaba hassoud, Email. qutiabah111@gmail.com).

Received:21/11/2021          Accepted17/07/2021

Abstract:

The investigation was carried out during 2020 – 2021  at the laboratories of plant protection in Faculty of Agriculture, Damascus University. The efficacy of fungicide / nematicid pesticides (fluopyram: pyridinyl ethylbenzaimide) and  (imicyafos:organophosphate), Also, The efficacy of ethanol extracts of Inula viscos L., Tagetes patula L. and Eucalyptus camaldulensis Dehnh. (leaves) was assayed against Juveniles Meloidogyne  incognita (J2) in laboratory. Results showed that fluopyram superiority significantly in killing the M. incognita (J2) compare with Nemakick at all concentration. Where, the LC₅₀ for fluopyram and Nemakick (27.34 and  50.4 mg/L.) after 48 hours, respectively. In the other side, results showed that ethanol extract of  I. viscos superiority significantly in killing the M. incognita (J2) compare with T. patula  and E. camaldulensis (leaves)at all concentration. Where, the LC₅₀ for of I. viscos ., T. patula . and E. camaldulensis 374.51, 857.47 and  1007.42 mg/L. after 48 hours, respectively. The results revealed that the tested compounds and plant extracts were highly toxic to M.  incognita  (J2) after 48 hours than 24 hours from incubation. In addition, the results showed that the toxic of tested compounds increased with increase concentrations. Finally, results of assay of tested compounds indicate that fluopyram and imicyafos and plant extracts of I. viscos and T. patula potential nematicidal activity agonist M.  incognita .

Keywords:, Nematode, Pesticides, Meloidogyne incognita , plant extracts.

Full paper in Arabic: pdf