Efficacy of Pesticides and Organic Fertilizer on Juveniles of Meloidogyne incognita In Laboratory

Abstract

The investigation was carried out during 2019 - 2020  at the laboratories of biological control studies and research center in Faculty of Agriculture, Damascus University. The efficacy of fungicide (fluopyram: pyridinyl ethylbenzaimide), nematicidal (imicyafos:organophosphate) and organic fertilizer (Poly quat+ Phosphoric) was assayed against Juveniles Meloidogyne  incognita (J2). Results showed that fluopyram superiority significantly in killing the M. incognita (J2) compare with imicyafos and Poly quat+ Phosphoric at all concentration. fluopyram showed highest efficacy in killing M.  incognita  (J2) , with an LC₅₀ 77.76 and  22.24 mg/L. after 24 and 48 hours, respectively., followed imicyafos witch was higher in mortality of M.  incognita  (J2) when compared with quat+ Phosphoric. The results revealed that the tested compounds were highly toxic to M.  incognita  (J2) after 48 hours than 24 hours from incubation. In addition, the results showed that the toxicity of tested compounds increased as well as increase concentrations. Finally, results of shawed that effect of fluopyram and imicyafos as nematicide nematicidal activity against M.  incognita .