Yield losses caused by plant parasitic nematodes graphical estimation

Sasanelli, N.; Toderaş, Ion; Iurcu-Straistaru, Elena; Rusu, Ștefan; Мигунова, В Д; Конрат, А Н

doi:10.53937/9789975315975.60

Cited by 3 publications

(3 citation statements)

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“…The successful establishment and wide distribution of M. incognita is due to its adaptation to warm conditions and high reproductive potential, especially in sandy soils (Sasser, 1977). Since most of its host crop plants are of high economic importance, and because of the very low tolerance limit of host crops to Meloidogyne spp., usually less than one egg or second stage juveniles per cm 3 of soil (Greco and Di Vito, 2009;Sasanelli et al, 2018), the species ranks high among pests affecting the economy of vegetable production. Root-knot nematodes reduce resistance against or increase the severity of infection of other soil-borne pathogens (Peacock, 1976;Sumner and Johnson, 1973;Marley and Hillocks, 1996;Chindo et al, 1991;Sasanelli et al, 2008Sasanelli et al, , 2016Gallo et al, 2011).…”

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confidence: 99%

Control of the Root-Knot Nematode Meloidogyne incognita and Weeds in Protected Cucumber with Dimethyl Disulfide (DMDS) over Two Crop Cycles: The First Results in Hungary

Tóth

Bogdányi²,

Petrikovszki

et al. 2019

Acta Phytopathologica et Entomologica Hungarica

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The effectiveness of dimethyl disulfide (DMDS) to control root-knot nematodes (Meloidogyne spp.) and weeds was tested for the first time in Hungary in two consecutive protected cucumber crops with application made only before the first crop. The treatments were Accolade EC (DMDS 94.1%) at 400 l/ha applied by driplines, Nemathorin 10 G (fosthiazate) at 30 kg/ha, and an untreated control. During the first cucumber cycle vigour-index, yield, root-gall index, Meloidogyne juveniles in the soil and germination of weeds were evaluated. All considered parameters were significantly improved by using DMDS compared respectively to the chemical standard and untreated control: (i) vigour-index of 7.0, 4.3 and 3.6; (ii) cumulative yield/sample of 45.1 kg, 30.9 kg, and 16.6 kg; root-gall index (RGI) of 1.2, 4.9, and 5.9; (iii) M. incognita J2/25 g soil of 0.25, 48.5 and 78.0, and (iv) number of weed seedlings/sample in the 20-30 cm soil profile of 1.1, 2.6, and 4.2. During the second cucumber crop, only root-gall index was evaluated. Results showed that a single DMDS treatment applied before the first crop had a prolonged beneficial effect on the following crop. In the second crop cycle, root gall indices were 5.58, 9.18, and 8.44 for DMDS treated plots, chemical control and untreated control, respectively.

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mentioning

confidence: 99%

Control of the Root-Knot Nematode Meloidogyne incognita and Weeds in Protected Cucumber with Dimethyl Disulfide (DMDS) over Two Crop Cycles: The First Results in Hungary

Tóth

Bogdányi²,

Petrikovszki

et al. 2019

Acta Phytopathologica et Entomologica Hungarica

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“…One of the most serious pests affecting tomato production and other vegetable crops is root-knot nematodes. M. incognita is one of the world's most destructive agricultural pests and one of the most economically signi cant nematode species (Sasanelli et al, 2018). Chemical nematicides have detrimental effects on human health and the environment.…”

Section: Introductionmentioning

confidence: 99%

The efficiency of biofertilizer and bio-control on root-knot nematode, using bacterial strains, and its effect on tomato plant protein patterns, and improving yield under field conditions

El-Sawy,

El-Nagdi,

Mohamed

et al. 2023

Preprint

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Agriculture faces growing population pressure for food security and sustainability. Controlling root-knot nematodes and reducing fertilizer use is crucial for environmental resources preservation. In Egypt, tomato production faces pollution and human health risks by using chemical nematicides to control this nematode. So, PGPRs can improve crop productivity by controlling parasitic nematodes and biofertilization. This experiment was established to study the role of bacterial strains for controlling root-knot nematode, Meloidogyne incognita and saving nitrogen fertilizer in a greenhouse naturally infested nematodes and cultivated by tomato plants. Tomato plants were exposed to foliar spraying and soil drenching of different bacterial strains (fusant F7, Bacillus thuringiensis (Bt), Bacillus cereus (Bc) and Achromobacter xylosoxidans (Ax) compared to chemical nematicide (Oxamyl) for controlling root-knot nematode, M. incognita and saving nitrogen fertilizer (Nitrogen treatments: 30 and 60 N for greenhouse). The modified fusant F7 and its parental strains on M. incognita's nematode reproduction using spraying foliage and soil drench methods. Results showed that all treatments effectively reduced root-knot nematode reproduction, with fusant F7 being more effective in reducing soil parameters like J2, galls, and egg masses. Soil drench achieved the best reduction compared to spraying foliage. Amplification of the protease gene which is reasonable for nematode control from strains Bc and Bt, as well as fusant F7, produced 1100 base pair fragments, confirming gene presence. Results clearly reported that biofertilizer treatments significantly improved all vegetative growth (plant length, number of branches per plant, number of leaves per plant, fresh weights of leaves per plant and dry weights of leaves per plant), flowering and fruit yield (number of clusters per plant, number of fruits per plant, fruit yield) and tomato fruit quality characteristics (average fruit weight, fruit diameter and TSS%) grown under deficit nitrogen treatment. Tomato plants which received the minimum quantity of nitrogen fertilizers (30 N/greenhouse) and treated by fusant F7 as a soil drench produced the highest significant values of vegetative growth, flowering and fruit yield and fruit quality of tomatoes characteristics. SDS-PAGE protein banding patterns to 11 leaves tomato plant treatments varieties for leaf water soluble proteins. The proteins extracted migrated in the 24–191kDa range. In comparison to lesser number 7 bands in the control, the plant exposed to F7 in soil drench spraying showed a highest number of bands (17 bands).

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“…A careful assessment of soil phytonematode population densities is needed to predict the potential yield losses and to select appropriate management strategies (Seinhorst, 1986;Sasanelli et al, 2018;Sasanelli et al, 2021). An accurate quanti-qualitative assessment of soil nematophauna is also basic to ecological studies, as soil nematodes are reliable bioindicators of environmental impact of biotic and abiotic stress factors (Bongers and Ferris, 1999;Du Preez et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

The FLOTAC basic technique as a new extraction method for root-knot nematodes (Meloidogyne spp.) from soil and roots

Troccoli¹,

d’Errico²,

D’Addabbo³

et al. 2022

Front. Parasitol.

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FLOTAC Techniques have been widely acknowledged as an effective method for the extraction of human and animal parasites. The present study is the first application of FLOTAC basic technique (FBT) for the extraction of phytoparasitic nematodes from soil and infested plant roots. Eggs and second stage juveniles (J2) of the root-knot nematode Meloidogyne incognita were extracted from infested soil and tomato roots either by FBT and conventional nematode extraction methods, such as centrifugal flotation and root maceration techniques, respectively. The number of M. incognita J2 and eggs extracted from soil by FBT was always significantly higher compared to the extraction with the centrifugal flotation method, averaging 277 vs 35 eggs and J2 mL-1 soil. Conversely, no significant differences were observed between FBT and the root maceration technique in the extraction of eggs and J2 from tomato roots. Results demonstrated that FBT can be highly effective also for the extraction of phytoparasitic nematodes. Due to its accuracy and sensitivity, FBT seems particularly suitable for nematode surveys in wide geographical areas, where an accurate and rapid detection of present phytoparasitic nematofauna is required.

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Yield losses caused by plant parasitic nematodes graphical estimation

Cited by 3 publications

References 1 publication

Control of the Root-Knot Nematode Meloidogyne incognita and Weeds in Protected Cucumber with Dimethyl Disulfide (DMDS) over Two Crop Cycles: The First Results in Hungary

Control of the Root-Knot Nematode Meloidogyne incognita and Weeds in Protected Cucumber with Dimethyl Disulfide (DMDS) over Two Crop Cycles: The First Results in Hungary

The efficiency of biofertilizer and bio-control on root-knot nematode, using bacterial strains, and its effect on tomato plant protein patterns, and improving yield under field conditions

The FLOTAC basic technique as a new extraction method for root-knot nematodes (Meloidogyne spp.) from soil and roots

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