Efficiency of jojoba oil and bio-nematicide on Meloidogyne incognita and performance of flame seedless grapevine cuttings

Abstract

The whole world is moving to lay off chemical pesticides and replaced with natural compounds. Fortunately, jojoba oil is one of these alternatives, being a special type of plant oils containing many compounds that can improve growth, nutritional status of plants and tolerance to nematodes infection. The present study was conducted during the successive growing seasons 2015 and 2016, in the Pomology greenhouse, NRC, Dokki, Giza, Egypt. Flame Seedless grapevine cuttings (one year old) were selected to study the effect of jojoba oil at 5 and 10 %, either with or without Meloidogyne incognita infection and Bio-Nematicide “Nema-Foo^®” at 5 and 10 %, with infection, was a comparison factor in addition to the control (uninfected  and infected plants). These factors were investigated on cuttings' growth characters, nutrient contents and controlling the root-knot nematode. In general, the obtained results revealed that all treatments encouraged most of the investigated vegetative growth measurements and leaf nutrient contents. Meanwhile, they reduced Meloidogyne incognita numbers of juveniles (J₂) in soil. Moreover, J₂ galls and egg-masses were minimized in roots of grapevine cuttings as well as rate of build-up, comparing with the control (infected) plants, especially higher concentrations of these materials.