Biological Performance of Certain Bio-Agents, Fluopyram and Fosthiazate against Meloidogyne spp. on Guava Trees (Psidium guajava L.)

Abstract

In this study, the potential of some bio-agents, fluopyram and fosthiazate were investigated against rootknot nematodes (Meloidogyne spp.) on guava trees under field conditions for two successive seasons (2020 & 2021). The examined bio-agents were; Bio-Nematon ® (Paecilomyces lilacinus), Bio Cure-F ® (Trichoderma viridi), Bio Cure-B ® (Pseudomonas fluorescens) and BIOTECT ® (Bacillus thuringiensis var. kurstaki). The infection parameters of root-knot nematodes (Meloidogyne spp.) were recorded at 35 and 70 days after treatment. Resultsindicated that all the applied treatments suppressed the soil population density (J2/250g soil) at range of 68.75 to 88.85% during the 1 st season, and from 57.72 to 92.92% during the 2 nd season. Besides, the numbers of root galls were decreased at range of 60.22 to 77.11% and from 57.90 to 70.90% during 1 st and 2 nd seasons, respectively. Also, the number of isolated eggs from roots was decreased at range of 67.13 to 94.61% and from 51.37 to 88.45% during 1 st and 2 nd seasons, respectively. However, the content of total N, P and K (%) in leaves of guava trees was fluctuated during both seasons.

Optimization the Impact of Fluopyram and Abamectin against the Root-Knot Nematode (Meloidogyne incognita) on Tomato Plants by Using Trichoderma album

“…In a recent study in Egypt, fluopyram (Velum prime ® 40% SC) which is a new registered nematicide found to be effective against the root-knot nematodes (Meloidogyne spp.) compared with biocontrol agents on guava trees under field conditions (Massoud et al, 2021). The obtained results showed that fluopyram significantly reduced the soil population, galls and eggs ranged from 71.75 to 77.85%, 57.90 to 62.84% and 67.13 to 88.45%, respectively.…”

“…The abundance of Trichoderma species in soil are form protective barriers from root pathogens (Nederhoff, 2001). The nematicidal effect of Trichoderma album has been described by several authors (Massoud et al, 2021;Raddy et al, 2013 andRadwan et al, 2011).…”

“…Fluopyram is a fungicide product, which developed by Bayer Crop Science and used as nematicide (Ji et al, 2019). Recent investigations showed that fluopyram exhibited a potential for managing root-knot nematode (M. incognita) on guava (Massoud et al, 2021), cyst nematode (Heterodera glycines) on soybean (Beeman et al, 2019), cotton nematode (Rotylenchus reniformis) on tomato (Storelli et al, 2020) and the stem and bulb nematode (Ditylenchus dipsaci) on sugar beet (Storelli et al, 2020). Soil rhizosphere are one of the most important sources of antagonistic microorganisms that could be use as radical solution for pest and disease problems.…”

Comparative biological activity of abamectin formulations on root-knot nematodes (Meloidogyne spp.) infecting cucumber plants: in vivo and in vitro

“…Nematicides are chemicals employed in various agricultural practices to control plant parasitic nematodes. Farmers are preferred to use non-fumigant nematicides, especially traditional nematicides 8 . The available choices to manage plant parasitic nematodes are limited.…”