Effect of homeopathic nematicide pellets on plant-nematode interaction under controlled conditions

Hanif, Asma; Dawar, Shahnaz

doi:10.30848/pjb2019-1(46)

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…Recently, homeopathic pellets showed positive results in killing the J 2 of Meloidogyne javanica on agricultural field. Soil amended with homeopathic pellets (Kent-20 used at 75% v/w concentration) produced healthy seedlings of okra, sunflower, mung and mash bean as it suppressed the M. javanica infection as compared to control (non-amended with homeopathic pellets) which produced galls on roots and disrupt the growth of tested crops (Hanif and Dawar, 2019). Experimental researches on the principle of homeopathy in plants were mostly performed by Mexico, India, Europe and Brazil recently (Marques et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Management of Root-Knot Nematode Meloidogyne javanica through Homeopathic Medicines

Hanif¹,

Dawar²

2021

PJN

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The study was carried out to screen the vermicidal activity of various homeopathic medicines at 100, 75 and 50% v/v concentrations of different potencies including mother tincture (Q), 200C and 30C against root-knot nematode Meloidogyne javanica using hatching and mortality test at different time intervals. Notable results were noticed by Kent-20 and Santonine-43 at all tested concentrations by reducing the hatching and complete mortality of M. javanica after 96 hours, while Cina (Q) showed greater reduction in hatching and mortality at 100% concentration followed by minimum hatching of eggs when used at 75 and 50% concentrations but in case of 200 and 30 (C) potency, only 100% concentration showed maximum effect after 72 and 96 hours followed by 75% concentration which had slight effect, whereas 50% concentration found to fail in killing the second stage of juveniles. Other homeopathic drugs used in the experiment showed no significant nematicidal effect against M. incognita. Kent-20 and Santonine-43 at three different concentrations of 50, 100 and 75% was highly effective when used as seed treatment of okra, sunflower, mung bean and mash beans followed by drenching the soil with these concentrations of both homeopathic drugs separately, also resulted in increasing the weight and height of tested crops and reducing the nematode infection on roots plant.

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Section: Resultsmentioning

confidence: 99%

Management of Root-Knot Nematode Meloidogyne javanica through Homeopathic Medicines

Hanif¹,

Dawar²

2021

PJN

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“…), and Kent Drops 20 ® (based on A. nilagirica, A. vulgaris Mattf., Dryopteris filix-mas Schott, and Tanacetum sp.). [16][17][18][19][20][21][22][23][24] In some of these studies, nematode-parasitized plants grew more when treated with the HP-an indication of enhanced tolerance to parasitism. Also, the HP may reduce nematode reproduction-a measure of efficacy in nematode control.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nosodes on Lettuce, Parasitized or Not by Meloidogyne enterolobii

et al. 2021

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Background Nosodes are homeopathic preparations (HPs) obtained from tissues or substances associated with the targeted disease or from culture of the pathogenic agent. Nosodes are thought to modulate host resistance, easing symptoms or promoting cure. A few studies have been published about control of plant-parasitic nematodes with HPs, but none with nosodes. Conceptually, nosodes prepared from nematode infective stages might interact with the plant's pathogen-recognition system and initiate or modulate plant resistance to nematodes. Objective Our goal was to investigate whether nosodes prepared from second-stage juveniles (J2) of Meloidogyne enterolobii can affect the moderate resistance already existing in the lettuce cultivar ‘Elisa’. Methods Nosodes at the Hahnemannian concentrations (cH) 6, 18, 30 and 42 were applied on lettuce plants through irrigation, with a constant daily dosage. The nosode treatment started at the seedling stage, before nematode inoculation with 3,000 eggs + J2 per plant. A series of absolute and relative controls, and 10 replicates per treatment, were employed. At harvest, variables related to plant growth and nematode reproduction were assessed. Results The nosode at 6, 18, and 30cH reduced (p <0.05) the nematode reproduction factor and root density. The nosode effect was cH-dependent since nematode reproduction was favored by treatment with 42cH. The nosode also affected (p <0.05) lettuce roots, which presented higher or lower fresh weight and volume depending on the cH applied and the condition—parasitized or not. Conclusion Nosodes obtained from Meloidogyne J2 may affect plant parasitism by nematodes, possibly by interfering with plant resistance. The nature—positive or negative—and intensity of the nosode effect depends on the cH applied to the plants. Further studies are necessary to identify which cH values are more effective in reducing nematode reproduction without causing negative side effects on plant growth.

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“…Indian research groups have reported negative effects of Cina Hepper). [4][5][6][7][8] These studies have reported reduction of nematode reproduction and less nematode damage to plant growth.…”

Section: Introductionmentioning

confidence: 99%

“…), and Kent Drops 20 (Kent Homoeopathic Pharmacy, Pakistan) on Meloidogyne incognita (Kofoid and White) Chitwood and on Meloidogyne javanica (Treub) Chitwood, parasitizing sunflower, tomato, mulberry, okra (Abelmoschus esculentus [L.] Moench), mung bean (Vigna radiata [L.] R. Wilczek), and mash bean (V. mungo [L.] Hepper). [4][5][6][7][8] These studies have reported reduction of nematode reproduction and less nematode damage to plant growth.…”

Section: Introductionmentioning

confidence: 99%

Effect of Homeopathic Preparations on Lettuce, Parasitized or Not by Meloidogyne enterolobii

et al. 2020

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Background There are relatively few scientific works on the use of homeopathy to manage plant pathogens, particularly nematodes. A handful of studies focused on Meloidogyne spp. parasitizing vegetables have brought contradictory results on nematode control and enhancement of plant tolerance to parasitism. Objective Our goal was to assess the effect of Cina—a well-known anti-nematode ingredient—on Meloidogyne enterolobii parasitizing lettuce. Methods Cina was applied daily on nematode-inoculated plants, from the seedling stage until harvest. We tested an evenly spaced range of Hahnemannian concentrations (c), which were applied though irrigation with a constant dose of the ingredient. Several absolute and relative controls were employed to allow the assessment of the effect of Cina on nematode reproduction and lettuce growth. Results Cina affected growth of non-parasitized plants, both positively and negatively; this effect was modulated by the c applied and the thermal stress suffered by the plants in one of the assays. The effect of Cina on the growth of nematode-parasitized plants was neutral or negative. Cina reduced nematode reproduction by 25–36%. Conclusion Based on the moderate negative effect of Cina on M. enterolobii reproduction, it seems this ingredient may be useful as a complementary strategy for Meloidogyne control. But Cina did not enhance the tolerance of lettuce to Meloidogyne spp.

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Effect of homeopathic nematicide pellets on plant-nematode interaction under controlled conditions

Cited by 4 publications

References 19 publications

Management of Root-Knot Nematode Meloidogyne javanica through Homeopathic Medicines

Management of Root-Knot Nematode Meloidogyne javanica through Homeopathic Medicines

Effect of Nosodes on Lettuce, Parasitized or Not by Meloidogyne enterolobii

Effect of Homeopathic Preparations on Lettuce, Parasitized or Not by Meloidogyne enterolobii

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