Eco-Friendly Management of Root-knot Nematode, Meloidogyne javanica in Okra (Abelmoschus esculentus) crop

Sidhu, Harjot Singh

doi:10.18782/2320-7051.2507

Cited by 8 publications

(6 citation statements)

References 2 publications

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“…Yield in terms of pod number and pod weight from French beans treated with the crude plant extracts were significantly better than yields from plants treated ISSN 2166-0379 2019 with Oxamyl. The findings of this study also agree with those of Sidhu et al (2017) who reported that application of botanical extracts increases yields and may help manage root-knot nematode populations in infested fields. Neem, Tithonia and Tephrosia extracts above their ability to suppress plant parasitic nematodes by changing the soil chemical properties, probably also changed the physical properties and enriched the soil with beneficial microflora.…”

Section: Effects Of Different Extracts On French Bean Yieldsupporting

confidence: 91%

Efficacy of Neem, Tithonia and Tephrosia Leaf Extracts in Management of Root-Knot Nematodes in French Beans (Phaseolus vulgaris L.)

Njenga¹,

Gathungu²,

Mbaka³

2019

JAS

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Root-knot nematodes (Meloidogyne spp.) are a major problem in French bean production within the smallholder farming systems. Control of root-knot using synthetic nematicides is not viable due to environmental concerns relating to their toxic residues. There is need to develop alternative control options that will promote soil health and reduce parasitic nematode densities. A study was conducted to determine the efficacy of Neem (Azadirachta indica A. Juss), Tithonia (Tithonia diversifolia) and Tephrosia (Tephrosia purpurea) leaf extracts in management of root-knot. Controlled lath house and field trials were conducted where the treatments were extracts from Neem, Tithonia and Tephrosia at different concentration levels of 25 ml/L, 50 ml/L and 100 ml/L). Vydate (Oxamyl 10%) a synthetic nematicide served as a standard positive control while treatments with no extracts application and no nematode application served as negative controls. The treatments in the lath house were arranged in completely randomized design while the field trials were arranged in randomized complete block design. Fench beans were planted on nematode infested soils and data on root galling indices and yield components was collected. Data collected was subjected to analysis of variance and significantly different means separated using Tukey’s Studentized Range Test at P=0.05. The extracts evaluated reduced root galling with their efficacy being similar to that of Vydate® (Oxamyl 10%) which was used as a positive control. Neem extracts treatments had the lowest mean galling index of the extracts, followed by Tithonia. Root-knot nematode galling indices were highest in the untreated control at 10 both in trial I and trial II. Treatment trials from Neem and Tithonia at concentration levels of 100 ml/L resulted in highest yield of French beans while yield from the untreated plants were the lowest. The results indicate extracts can be adopted to suppress root-knot nematodes.

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Section: Effects Of Different Extracts On French Bean Yieldsupporting

confidence: 91%

Efficacy of Neem, Tithonia and Tephrosia Leaf Extracts in Management of Root-Knot Nematodes in French Beans (Phaseolus vulgaris L.)

Njenga¹,

Gathungu²,

Mbaka³

2019

JAS

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“…Root knot nematodes, pose a major challenge to the global pest management programs due to devastating crop losses caused by these organisms (Sidhu et al, 2017). Among the root knot nematodes, Meloidogyne incognita is most abundant in tropical soils, barely sparing any crop family, and the most challenging part is to control its population below economic damage levels (Collange et al, 2011;de Freitas Silva et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive in vitro and in silico Analysis of Nematicidal Action of Essential Oils

et al. 2021

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Nematicidal potential of essential oils (EOs) has been widely reported. Terpenoids present in most of the essential oils have been reported responsible for their bioactivity though very less is known about their modes of action. In the present study, an in vitro screening of nine Eos, namely, Citrus sinensis (OEO), Myrtus communis (MTEO), Eucalyptus citriodora (CEO), Melaleuca alternifolia (TEO), Acorus calamus (AEO), Commiphora myrrha (MREO), Cymbopogon nardus (CNEO), Artemisia absinthium (WEO), and Pogostemon cablin (PEO) against Meloidogyne incognita revealed OEO, CNEO, and TEO as most effective with LC50 39.37, 43.22, and 76.28 μg ml–1 respectively. EOs had varying compositions of mono- and sesquiterpenes determined by gas chromatography-mass spectrometry (GC-MS) analysis. The in silico molecular interactions screening of major EO constituents and the seven selected target proteins of the nematode indicated highest binding affinity of geraniol-ODR1 (odorant response gene 1) complex (ΔG = -36.9 kcal mol–1), due to extensive H-bonding, hydrophobic and π-alkyl interactions. The relative binding affinity followed the order: geraniol-ODR1 > β-terpineol-ODR1 > citronellal-ODR1 > l-limonene-ODR1 > γ-terpinene-ODR1. Taken together, the cumulative in vitro and computational bioefficacy analysis related to the chemoprofiles of EOs provides useful leads on harnessing the potential of EOs as bionematicides. The insight on biochemical ligand–target protein interactions described in the present work will be helpful in logical selection of biomolecules and essential oils for development of practically viable bionematicidal products.

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“…The result shows that the crude extract recorded the highest juvenile mortality 97 % compared to 0% in control. Sidhu et al, (2017), revealed that D. stramonium fresh leaves aqueous extracts at 20% w/v increased the mortality of M. javanica second-stage juveniles and the mortality increased by increasing extracts concentration and the exposure time. Babaali et al, (2017), evaluated the effect of aqueous and ethanol extracts of D. innoxia, D. stramonium and D. tatula plants on the motility of M. incognita J2S at five different concentrations as follow: 6.25, 12.5, 25, 50 and 100% and 10, 30, 60 and 120 min of exposure times.…”

Section: Laboratory-tomatomentioning

confidence: 95%

Nematicidal Activity of Jimson Weed (Datura Spp.) for Management of Plant-Parasitic Nematodes With Emphasis on Root Knot Nematode: A Review

Bakr

2021

Pak. J. Phytopathol.

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Eco-Friendly Management of Root-knot Nematode, Meloidogyne javanica in Okra (Abelmoschus esculentus) crop

Cited by 8 publications

References 2 publications

Efficacy of Neem, Tithonia and Tephrosia Leaf Extracts in Management of Root-Knot Nematodes in French Beans (Phaseolus vulgaris L.)

Efficacy of Neem, Tithonia and Tephrosia Leaf Extracts in Management of Root-Knot Nematodes in French Beans (Phaseolus vulgaris L.)

A Comprehensive in vitro and in silico Analysis of Nematicidal Action of Essential Oils

Nematicidal Activity of Jimson Weed (Datura Spp.) for Management of Plant-Parasitic Nematodes With Emphasis on Root Knot Nematode: A Review

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