Plant-Parasitic Nematodes Associated with Certain Fruit Trees and Vegetable Crops in the North Eastern Egypt

Abstract

This survey was conducted in four locations of Ismailia governorate in the north eastern part of Egypt during the 2020-2022 seasons to investigate occurrence, population density and distribution of plant-parasitic nematodes associated with various crops. A total of 440 soil samples, were collected from infested fruit trees viz. grape (Vitis vinifera L.), guava (Psidium guajava L.), olive (Olea europaea L) and pomegranate (Punica granatum L.) and vegetable crops viz. green bean (Phaseolus vulgaris L.), pea (Pisum sativum L.), strawberry (Fragaria ananassa) and tomato (Solanum lycopersicum L.). Ten plant parasitic nematodes genera have been identified. The root-knot nematodes, Meloidogyne had the highest mean density over any nematode taxa in the tested samples. The highest density values of Meloidogyne were recorded on olive, grape and guava trees that amounted to 800, 640 and 200 juveniles/250 g soil. respectively. However, the maximum densities for Tylenchorhynchus were 160, 180, 120, and 120 juveniles /250 g soil for grape, guava, olive, and pomegranate, respectively. The maximum density values for Helicotylenchus were 180, 120 and 40 juveniles /250 g soil for guava, olive and pomegranate, respectively. Other genera were found at low density i.e. Criconemoides, Trichodorus, Xiphinema, Longidorus, and Pratylenchus. The root knot nematodes have been nearly found in all vegetable crops. The maximum densities for Meloidogyne were 600, 200, 240 and 720 juveniles /250 g soil for green bean, pea, strawberry and tomato, respectively. Generally obtained data indicated that plant-parasitic nematodes are considered as a serious threat to such plant species under variable agronomic and climatic conditions that need to further developed and implemented of control measures.

Association of Plant Parasitic Nematodes with some Vegetables Crops of Khyber Pakhtun Khwa, Pakistan

“…Tomato is the easy host for M. incognita which damage their roots, there are 720 juveniles/250 g of tomato rhizosphere (Adam et al, 2013). The density of M. incognita in Ismailia governorate was 720 individuals/ 250 g similar study in Egypt showed that for tomato and density of Tylenchorhynchus was 160 nematodes/ 250 g for tomato (Abdel-Baset et al, 2022).…”

Screening of Some Popular Egyptian Varieties of Some Solanaceous Vegetables Against Root-Knot Nematode, Meloidogyne Javanica

“…They can be either free-living or parasitic, feeding on plants, fungi, and animals (Decraemer & Hunt 2013). The species, which have adapted a plant-parasitic lifestyle, pose a significant threat to crop production worldwide (Sikora & Fernàndez 2005) and to solanaceous cultivated in soils of the Nile Valley and reclaimed sandy soils in the desert of Egypt (Mokbel et al, 2006;Abd-Elgawad et al, 2012;Abd-Elgawad, 2013 andMontasser et al, 2019). The root-knot nematodes consist of sedentary polyphagic root endoparasites (Sharon et al 2007) and their species are the most destructive plant-parasitic nematodes causing large economic losses in crop production (Sasser 1980).…”