Effects of some plant extracts on root-knot nematodes in vitro and in vivo conditions

İlker KEPENEKÇİ

One of the major pests of the vegetables, root knot nematodes (Meloidogyne spp.) (Tylenchina: Meloidogynidae) (RKNs) can cause economic losses by forming knots on the host plant roots. RKNs are more prevalent in the greenhouse vegetable growing areas of the coastal regions. In this study, the effects of plant extracts from five different plants; Capsicum frutescens, Hyoscyamus niger (Solanaceae), Melia azedarach (Meliaceae), Xanthium strumarium and Achillea wilhelmsii (Asteraceae) were evaluated against RKNs. In the first studies; the effects of plant extracts (0.5, 1.0, 1.5, 3.0, 6.0 and 12.0 ...More

Infectivity of Native Entomopathogenic Nematodes Applied as Infected-Host Cadavers against the Colorado Potato Beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae)

İlker KEPENEKÇİ

Biological Control Potential of Turkish Entomopathogenic Nematodes Against Holotrichapion pullum (Gyllenhal) (Coleoptera, Apionidae)

İlker KEPENEKÇİ

Potential of three native Turkish isolates of entomopathogenic nematodes (EPNs) (Steinernema feltiae, S. carpocapsae and Heterorhabditis bacteriophora) was evaluated against Holotrichapion pullum (Gyllenhal) (Coleoptera, Apionidae) under laboratory conditions. Suspensions of EPNs were applied at three concentrations (500, 1000 and 2000 IJs ml-1) and at two temperatures (15 and 20°C). After one week, mortality rate of H. pullum adults was assessed. Mortality rate was higher in the nematode treatments than in the control. All nematodes showed more effect depending on temperature increase. At 20° ...More

Effects of Some Indigenous Plant Extracts on Mortality of the Root Lesion Nematode, Pratylenchus thornei Sher & Allen

İlker KEPENEKÇİ

The gen us of roo t lesio n nematod es (RLN), Pratylench us, feeds an d reprodu ces in the roo t co rtex of man y plant s pecies. RLN was rep roduced on carrot cu lture by using a pu re cu lture. In vitro tes ts were carried out to determine the effects of plant extracts from three ind igenous plants: h enbane, Hyoscyamus niger; b ead-tree, Melia a zedarah and commo n cocklebu r, Xanth ium strumarium on P. tho rn ei (the major wh eat root-les ion nematode). The nematodes were expos ed for 12, 24, 48, 72 an d 96 hrs in three concen tratio ns of plant extracts. Th e effect of plant extracts was ...More

Effects of Some Indigenous Plant Extracts on Meloidogyne javanica Infesting Eggplant and Pepper under Greenhouse Condition

İlker KEPENEKÇİ

Among the major pests of vegetables are Root-Knot Nematodes (Meloidogyne spp.) (RKNs), which cause loss of production due to galling and reduction in root development and shoot growth. Herein, the efficacy of plant extracts of Capsicum frutescens, Hyoscyamus niger, Melia azedarach, Xanthium strumarium and Achillea wilhelmsii were evaluated at 3 concentrations (3, 6, and 12%) against Meloidogyne javanica on pepper and eggplant. Experiments were carried in pots under greenhouse condition, using pepper cv. Charleston and eggplant cv. Kemer as assay plants that are commonly cultivated in Turkey. A ...More