NEMATICIDAL EFFICACY OF BIOFUMIGATION WITH VARIOUS BRASSICA CROPS AGAINST Meloidogyne Incognita (KOFOID ET WHITE) CHITW. ON TOMATO CROP IN NORTH SINAI

2020 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Shimaa Hassan ◽  
Samia Massoud ◽  
Salah AbdEl-kareem ◽  
Mohamed Abdallah
Keyword(s):  
Meloidogyne Incognita ◽  
Tomato Crop ◽  
Brassica Crops ◽  
North Sinai

Efficacy of new nematicides for managing Meloidogyne incognita in tomato crop

2019 ◽  
Vol 167 (5) ◽  
pp. 295-298 ◽  
Author(s):  
Juliana de Oliveira Silva ◽  
Angelo Loffredo ◽  
Mara Rúbia da Rocha ◽  
J. Ole Becker
Keyword(s):  
Meloidogyne Incognita ◽  
Tomato Crop

scholarly journals Laboratorio de Nematología, Escuela de Fitotecnia, Facultad de Agronomía, Universidad de Costa Rica. San José, Costa Rica.

2016 ◽  
Vol 8 (2) ◽  
pp. 112
Author(s):  
Róger López
Keyword(s):  
Costa Rica ◽  
Meloidogyne Incognita ◽  
Lantana Camara ◽  
San Jose ◽  
Bidens Pilosa ◽  
Tomato Crop ◽  
Asclepias Curassavica

Meloidogyne incognita failed to reproduce on the weeds Lantana camara, Melampodium divaricatum, Bidens pilosa, Lepidium virginicum, and Tagetes filifolia under greenhouse conditions. Reproduction on Asclepias curassavica, Acmella oppositifolia, T. microglossa, and T. jalisciensis was poor. Root galling on a successive tomato crop was severe in pots previously planted with T. jalisciensis, moderately severe after T. microglossa and A. oppositifolia, light after T. filifolia and B. pilosa, and with no galling following A. curassavica, L. camara, M. divaricatum and L. virginicum.

scholarly journals Studies on effect of gold nanoparticles onMeloidogyne incognitaand tomato plants growth and development

2018 ◽  
Author(s):  
Rajni Kant Thakur ◽  
Babita Dhirta ◽  
Poonam Shirkot
Keyword(s):  
Gold Nanoparticles ◽  
Meloidogyne Incognita ◽  
Negative Impact ◽  
Pot Experiment ◽  
Parasitic Nematodes ◽  
Root Knot Nematode ◽  
Tomato Crop ◽  
Root Knot Nematodes ◽  
Tomato Plants ◽  
Beneficial Effects

AbstractThe plant parasitic nematodes are one of world major agricultural pest, causing in excess of 157 billion dollars in worldwide damage annually. This study has provided evidence that gold nanoparticles have great utility for management of root-knot nematodes in tomato crop. The effect of gold nanoparticles onMeloidogyne incognitaJ2 was remarkable under the direct exposure in water, after three hours of incubation of Meloidogyne incognita with GNPs showed the 100% mortality. The lesser survival rate ofMeloidogyne incognitain soil treatment showed the strong nematicidal effect of gold nanoparticles. Subsequently, the pot experiment had shown the beneficial effects of gold nanoparticles for intensively managing the root-knot nematode. The Pot experiment not only showed us that GNPs were lethal to root-knot nematodes were also induces growth of tomato plants and didn’t have any kind of negative impact on plant growth. In our study, GNPs were found to be safe and lethal to Meloidogyne incognita.

scholarly journals Application forms and mode of action of biocontroller in the management of Meloidogyne incognita in tomato

2020 ◽  
Vol 38 (3) ◽  
pp. 254-260
Author(s):  
Jean B Frederic ◽  
Cândido A da Costa ◽  
Fernando da S Rocha ◽  
Maria de Fátima G Fernandes
Keyword(s):  
Root System ◽  
Meloidogyne Incognita ◽  
Mode Of Action ◽  
Soil Surface ◽  
Bacillus Sp ◽  
Biological Product ◽  
Tomato Crop ◽  
Root Knot Nematodes ◽  
Second Stage ◽  
Trichoderma Sp

ABSTRACT Mixture of antagonist agents and form of application may influence in the control of root-knot nematodes. Thus, the aim of this work was to study the action of a biological product based on enzyme mixtures, Bacillus sp. and Trichoderma sp., at different concentrations on hatching, motility, mortality and reproduction of Meloidogyne incognita in tomato, considering two ways of application of the product. Eggs and second-stage juveniles (J2) of M. incognita were placed in biological product solutions at concentrations: 0, 1.25, 2.5, 5, 10, 20 and 40 g L-1. The same concentrations were applied to planting pits or to the soil surface. Afterwards, 3,692 eggs of M. incognita were inoculated in tomato crop. A significant reduction in J2 hatching of M. incognita J2 was observed in the highest concentrations and higher mortality of J2 from concentration of 5 g L-1. The interaction between concentrations and form of application of the product significantly influenced the infectivity and reproduction of M. incognita. Greater root system mass was obtained by applying the biological product to the surface, regardless of concentration.

scholarly journals Salicylic acid-induced glutathione status in tomato crop and resistance to root-knot nematode, Meloidogyne incognita (Kofoid & White) Chitwood

2011 ◽  
Vol 1 (1) ◽  
pp. 5 ◽  
Author(s):  
Hari C. Meher ◽  
Vijay T. Gajbhiye ◽  
Ghanendra Singh
Keyword(s):  
Salicylic Acid ◽  
Plant Resistance ◽  
Meloidogyne Incognita ◽  
Crop Growth ◽  
Glutathione Metabolism ◽  
Management Decision ◽  
Root Knot Nematode ◽  
Tomato Crop ◽  
Nematode Reproduction ◽  
Glutathione Status

Salicylic acid-(SA) is a plant defense stimulator. Exogenous application of SA might influence the status of glutathione-(GSH). GSH activates and SA alters the expression of defense genes to modulate plant resistance against pathogens. The fate of GSH in a crop following SA treatment is largely unknown. The SA-induced profiles of free reduced-, free oxidized-(GSSG) and protein bound-(PSSG) glutathione in tomato crop following foliar treatment of transplant at 5.0-10.0 &mu;g mL&ndash;1 were measured by liquid chromatography. Resistance to root-knot nematode, <em>Meloidogyne incognita</em> damaging tomato and crop performance were also evaluated. SA treatment at 5.0-10.0 &mu;g mL&ndash;1 to tomato transplants increased GSH, GSSG and PSSG in plant leaf and root, more so in leaf, during crop growth and development. As the fruits ripened, GSH and PSSG increased and GSSG declined. SA reduced the root infection by <em>M. incognita</em>, nematode reproduction and thus, improved the resistance of tomato var. Pusa Ruby, but reduced crop growth and redox status. SA at 5.0 &mu;g mL&ndash;1 improved yield and fruit quality. The study firstly linked SA with activation of glutathione metabolism and provided an additional dimension to the mechanism of induced resistance against obligate nematode pathogen. SA increased glutathione status in tomato crop, imparted resistance against <em>M. incognita</em>, augmented crop yield and functional food quality. SA can be applied at 5.0 &mu;g mL&ndash;1 for metabolic engineering of tomato at transplanting to combine host-plant resistance and health benefits in formulating a strategic nematode management decision.

scholarly journals Suppressiveness of soil amendments with pelleted plant materials on the root-knot nematode Meloidogyne incognita

2020 ◽  
Vol 57 (4) ◽  
pp. 376-383
Author(s):  
T. D’Addabbo ◽  
V. D. Migunova ◽  
M. Renčo ◽  
N. Sasanelli
Keyword(s):  
Meloidogyne Incognita ◽  
Untreated Control ◽  
Soil Amendments ◽  
Root Knot Nematode ◽  
Tomato Crop ◽  
Plant Materials ◽  
Additional Tool ◽  
Tomato Yield ◽  
Safe Management ◽  
Tomato Roots

SummarySoil treatments with formulated plant biomasses or waste materials can be an effective alternative to green manure crops for a sustainable management of root-knot nematode infestations. The suppressive performance of soil amendments with three commercial formulations of defatted seed meal from Brassica carinata, dry biomass of Medicago sativa and pressed pulp from Beta vulgaris was comparatively evaluated on the root knot nematode Meloidogyne incognita both on potted and field tomato (cv. Regina) trials. Products were applied at rates of 10, 20, 30 or 40 g/kg and 20 and 40 T/ ha soil in pots and field, respectively. Soil non treated or treated with the nematicide Oxamyl were used as controls in both experiments. Amendments in potted soil significantly reduced M. incognita infestation on tomato roots compared to both the untreated control and treatment with Oxamyl, also increasing tomato plant growth up to the 30 g/kg soil rate. At the end of the field tomato crop, soil population density of M. incognita resulted significantly reduced by all the tested treatments, whereas tomato yield was significantly higher than the untreated control only at the lowest amendment rate. Soil amendments with the materials tested in this study demonstrated to be a potential additional tool for a satisfactory and safe management of root-knot nematodes.

scholarly journals Biocontrol agents in the management of Meloidogyne incognita in tomato

2017 ◽  
Vol 47 (10) ◽  
Author(s):  
Juliana de Oliveira Silva ◽  
Marcus Vinícius Santana ◽  
Leonardo Levorato Freire ◽  
Bruno da Silva Ferreira ◽  
Mara Rúbia da Rocha
Keyword(s):  
Population Density ◽  
Meloidogyne Incognita ◽  
Biocontrol Agents ◽  
Egg Mass ◽  
Root Knot Nematode ◽  
Tomato Crop ◽  
Tomato Plants ◽  
Biological Products ◽  
Gall Index ◽  
Different Doses

ABSTRACT: Recognized as prominent among the principal pests of tomato crop, the root-knot nematode (Meloidogyne incognita) has generated much study with regards to control methods. This study aimed to assess the efficiency of biological products in decreasing the M. incognita population in tomato. Four experiments were conducted under greenhouse conditions. Two of these experiments had the purpose to determine the efficiency of NemOut™ (Bacillus subtilis + B. licheniformis + Trichoderma longibrachiatum), and the other two to assess the efficiency of other different biological products in M. incognita management. Tomato plants of the cultivar Santa Cruz Kada Giant were inoculated using 2000 eggs and J2 of M. incognita. In the first two experiments doses corresponding to 0, 4, 6, 8 and 10kg ha-1 of NemOut™ were applied after inoculation. In the second study, the treatments consisted of the use of biological products containing different other biocontrol agents. Assessments were made at 45 and 65 days after inoculation (DAI) to evaluate plant height, fresh shoot and fresh root weigh, gall index and egg mass index, population density and reproduction factor (RF). The NemOut™ doses reduced the M. incognita population density and RF at 45 DAI. The agent Pochonia chlamydosporia showed greater efficiency in controlling M. incognita on tomato. Biological products and the different doses of NemOut™ had no influence on the tomato plant development.

scholarly journals A Novel Nematicide for the Control of Root-Knot Nematodes in Tomato Crop

2017 ◽  
Vol 6 (2) ◽  
pp. 35-40
Author(s):  
José A. Calvo-Araya
Keyword(s):  
Meloidogyne Incognita ◽  
Irrigation System ◽  
Block Design ◽  
Single Application ◽  
Root Knot Nematode ◽  
Tomato Crop ◽  
Solanum Lycopersicum L ◽  
Final Population ◽  
Randomized Complete Block Design ◽  
Set Up

A novel nematicide (fluensulfone) was evaluated for control of the root-knot nematode Meloidogyne incognita in tomato crop (Solanum lycopersicum L.) under field conditions. The experiment was set up in a randomized complete block design with four replicates. Six treatments were assessed for control of M. incognita: four doses of fluensulfone, one dose of the nematicide oxamyl, and a control with no application of nematicides. Ten days before transplanting, nematicides were applied in a single application via an irrigation system. The lowest final population densities of M. incognita in tomato crop were recorded in plots treated with fluensulfone at the dose of 2.75 L·ha-1, with an average of 26 juveniles. The higher percentage of efficacy was obtained with the application of fluensulfone at a dose of 2.5 L·ha-1. Fluensulfone exerted a more efficient nematicidal activity as compared with oxamyl, which is the most used nematicide in crops in Mexico. Our results indicated that fluensulfone can be used as an alternative nematicide for the control of M. incognita in tomato crop and other crops.

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