scholarly journals Effect of Beauveria bassiana with Botanicals on Root Knot Nematode Population (Meloidogyne graminicola) in Rice Seedlings

2019 ◽  
Vol 8 (10) ◽  
pp. 442-448
Author(s):  
P. Niveditha ◽  
Sobita Simon ◽  
R. V. Neeraja Reddy ◽  
Abhilasha A. Lal
Keyword(s):  
Beauveria Bassiana ◽  
Nematode Population ◽  
Rice Seedlings ◽  
Root Knot Nematode ◽  
Meloidogyne Graminicola

scholarly journals INTEGRATED MANAGEMENT OF RICE ROOT-KNOT NEMATODE, MELOIDOGYNE GRAMINICOLA UNDER THE DIRECT-SEEDED CONDITION

2021 ◽  
Vol 21 (no 1) ◽  
Author(s):  
Pooja R. M ◽  
Ravindra H ◽  
Narasimhamurthy H B ◽  
Sehgal M ◽  
Dushyanth kumar ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Integrated Management ◽  
Poultry Manure ◽  
Organic Amendments ◽  
Nematode Population ◽  
Root Knot Nematode ◽  
Meloidogyne Graminicola ◽  
Neem Cake ◽  
Untreated Check ◽  
Direct Seeded

The present field experiment was conducted to determine the efficacy of consortium of different bio-agents viz., Psuedomonas fluorescens + Trichoderma harzianum + Bacillus megatherium, organic amendments viz., neem cake, poultry manure and nematicides viz., carbosulfan, carbofuran and fluensulfone for the management of M. graminicola under direct-seeded condition during kharif 2019-20 at the University of Agricultural and Horticultural Sciences, Shivamogga. The results revealed that all the treatments were significantly superior over the untreated check with respect to plant growth parameters and nematode population. However, the plots treated with fluensulfone at 3g/plot was found to be the best treatment as it recorded highest plant height (78.87 cm), root length (18.90 cm) with lowest RKI (2.0), maximum grain yield (36.87 q/ha) and least nematode population (199.00/200g soil) followed by the consortium of bioagents P. fluorescens + T. harzianum + B. megatherium at 20g/m2, carbofuran 3G at 9.9g/ m2, carbosulfan 25 EC at 0.1%, neem cake at 100g/m2 and poultry manure at 100g/m2 respectively.

scholarly journals Management of rice root-knot nematode (Meloidogyne graminicola Golden and Birchfield)–An integrated approach

2021 ◽  
Vol 17 (AAEBSSD) ◽  
pp. 185-190
Author(s):  
S.R. Sachingowda ◽  
S.R. Sahana ◽  
H. R. Raveendra ◽  
C.R. Nagesh ◽  
K.R. Rekha
Keyword(s):  
Bacillus Subtilis ◽  
Bacillus Megaterium ◽  
Trichoderma Harzianum ◽  
Root Length ◽  
Integrated Approach ◽  
Nematode Population ◽  
Rice Root ◽  
Root Knot Nematode ◽  
Meloidogyne Graminicola ◽  
Purpureocillium Lilacinum

An experiment was conducted to know the efficacy of bio agents viz., Purpureocillium lilacinum, Trichoderma harzianum, Bacillus subtilis,Bacillus megaterium, Vermicompost and Consortium of bio-agents (Purpureocillium lilacinum + Trichoderma harzianum + Bacillus subtilis +Bacillusmegaterium +Vermicompost) and Carbofuran3G @ 0.3 i.e., alone for management of rice root-knot nematode Meloidogyne graminicola for one season at Chikadadakatte village of Honnali taluk, Davanagere district during Kharif- 2018. The results revealed that all the treatments were significantly superior over check with respect to growthparameters and nematode population. However, carbofuran 3G significantly reduced the nematode population (275.11 /200 cc soil)which was found to be the best treatment as it recorded highest plant height (114.06 cm), root length (23.13 cm), maximum grain yield (44.60 q/ha) with least RKI (1.20) followed byConsortium of bio-agents (Purpureocilliumlilacinum + Trichoderma harzianum + Bacillus subtilis +Bacillusmegaterium +Vermicompost).

scholarly journals Mineral composition of beetroot treated with potential elicitors and inoculated with Meloidogyne javanica

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Paula Juliana Grotto Débia ◽  
Beatriz Cervejeira Bolanho ◽  
Claudia Regina Dias-Arieira
Keyword(s):  
Population Density ◽  
Mineral Composition ◽  
Integrated Management ◽  
Meloidogyne Javanica ◽  
Nematode Population ◽  
Root Knot Nematode ◽  
Cu Content ◽  
Manganese Zinc ◽  
Nematode Population Density ◽  
Elicitor Treatments

Abstract Background The root-knot nematode Meloidogyne javanica can infect beetroots, causing extensive damage to this food crop. As chemical and genetic control tactics have shown limited efficacy, new strategies are needed to improve the integrated management of this parasite. This study assessed the influence of potential defence elicitors and M. javanica infection on the mineral composition of beetroot. Plants were treated with acibenzolar-S-methyl (ASM), citrus biomass, or a mannanoligosaccharide-based product (MOS) and inoculated with 1000 eggs and second-stage juveniles of M. javanica. At 60 days after inoculation, beetroot plants were harvested and evaluated for nematode population density, vegetative growth, and mineral content. Results All potential elicitors reduced nematode population density in beetroots (p ≤ 0.10) and improved the vegetative parameters of inoculated plants (p ≤ 0.05), except shoot fresh weight. Some minerals were found to be negatively affected by treatments, particularly calcium, whose levels were consistently lower in treated plants. On the other hand, M. javanica inoculation increased magnesium, iron, manganese, zinc, and copper contents in beetroots. However, the latter mineral (Cu content) of inoculated plants was positively influenced by MOS and ASM. Conclusion Potential elicitor treatments did not improve the mineral composition of beetroot, but were effective in reducing nematode population density. Plants inoculated with M. javanica had higher mineral levels. However, gall formation decreases the commercial value of the crop and might render it unsuitable for commercialisation. M. javanica-infected beetroots may be used for nutrient extraction or sold to food processing industries.

scholarly journals Precrop Effect of Red Clover (Trifolium pratense L.) and Alfalfa (Medicago sativa L.) on the Population Development of the Northern Root-Knot Nematode Meloidogyne hapla Chitwood, 1949 and on Succeeding Crops—A Pot Study

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 722
Author(s):  
Renata Dobosz ◽  
Roman Krawczyk
Keyword(s):  
Population Density ◽  
Medicago Sativa ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Continuous Cultivation ◽  
Nematode Population ◽  
Meloidogyne Hapla ◽  
Root Knot Nematode ◽  
Crop Species ◽  
Tomato Growth

The northern root-knot nematode, Meloidogyne hapla, is a major pest of many crop species. The objective of the study was to determine how M. hapla population dynamics is affected by two precrops, i.e., Trifolium pratense and Medicago sativa, in three crop durations: one, two and three years of continuous cultivation. Moreover, we set ourselves the task of evaluating the effect of the legume precrop soil on the growth of the succeeding tomato plant (Solanum lycopersicum) and on the nematode population. The experiment was performed outdoors in pots with naturally infected soil. Both precrop species investigated were found to modify the J2 nematode population density in the soil. The galls and nematode females with egg masses were observed on the roots of both studied plant species at the end of each growing season. They appeared to be more abundant on the red clover roots than on those of the alfalfa. The obtained data indicate that the spring soil sampling is more appropriate for the estimation of the M. hapla population density in the red clover precrop soil. The legume precrop soil had a limiting effect on tomato growth and fruit yield. The nematode population negatively influenced tomato growth. The experiment revealed that tomato plants could be planted in alfalfa precrop soil following at least three years of continuous alfalfa cultivation. The same cannot be said of the cultivation of red clover as a precrop for tomatoes.

Compatibility of Pasteuria penetrans with fungal parasite Paecilomyces lilacinus against root knot nematode on Chilli (Capsicum annuum L.)

2011 ◽  
Vol 1 (1) ◽  
pp. 36-42
Author(s):  
K.K. Chaudhary ◽  
R. K. Kaul
Keyword(s):  
Capsicum Annuum ◽  
Dry Weight ◽  
Nematode Population ◽  
Paecilomyces Lilacinus ◽  
Infested Soil ◽  
Pasteuria Penetrans ◽  
Root Knot Nematode ◽  
Capsicum Annuum L ◽  
Combined Application ◽  
Spore Culture

Chilli (Capsicum annuum L.) crop is highly susceptible for the root knot nematode Meloidogyne incognita and every year this nematode causes great loss to the crop. The present study investigated the cumulative effect of two biocontrol agents viz. Pasteuria penetrans and Paecilomyces lilacinus against M. incognita. Two doses of P. penetrans i.e. 50g/Kg and 100g/Kg infested soil were applied either alone or in combination with two doses of P. lilacinus i.e. 4g spore culture/Kg and 6g spore culture/Kg of soil. Application of P. penetrans with P. lilacinus resulted into relatively better improvement in various growth attributes of chilli when compared with the individual application. Amongst the various treatments tested combined application with the higher dose of both bioagents (i.e. 100g P. penetrans infested soil with 6g of P. lilacinus/Kg) showed maximum improvement in fresh and dry weight of shoot and root over the nematode check and it was almost at par with that of the absolute check. The combined application of both the bioagents at higher dose resulted in 139 and 84% increase in dry weight of shoot and root over the nematode check respectively. The combined application of both the bioagents was also observed to cause higher reduction in gall number and nematode population than their individual application except for the treatment having lower dose of the P. penetrans with P. lilacinus where reduction in both the parameters was observed to be at par with that of the either dose of P. penetrans or higher dose of P. lilacinus. Combined application with higher dose of P. penetrans and P. lilacinus showed maximum reduction of 62.6 and 82.2% in gall numbers and nematode population over the nematode check.

scholarly journals Evaluation of Organic Amendments against Rice Root-KnotNematode at Seedling Stage of Rice

1970 ◽  
Vol 9 ◽  
pp. 21-27 ◽  
Author(s):  
Nabin Kumar Dangal ◽  
D. Sharma Poudyal ◽  
S. M. Shrestha ◽  
C. Adhikari ◽  
J. M. Duxbury ◽  
...  
Keyword(s):  
Block Design ◽  
Organic Amendments ◽  
Severity Index ◽  
Rice Root ◽  
Chicken Manure ◽  
Root Weight ◽  
Root Knot Nematode ◽  
Meloidogyne Graminicola ◽  
Shoot Weight ◽  
Lesion Severity

Pot experiment was conducted during July-September 2006 to evaluate some organic amendments such as sesame (Sesamum indicum) biomass, buckwheat (Fagopyrum esculentum) biomass, neem (Azadirachta indica) leaves, chinaberry (Melia azedarch) leaves and chicken manure @ 1, 2 and 3 t ha-1 each against the rice root-knot nematode (Meloidogyne graminicola Golden & Birchfield) in direct seeded rice. The treatments were replicated five times in a randomized complete block design. The number of second stage juveniles (J2) of M. graminicola was significantly low in chicken manure @ 3 t ha-1. The root knot severity index was significantly low in sesame @ 3 t ha-1, chinaberry @ 3, 2 or 1 t ha-1, neem @ 3 t ha-1 and chicken manure @ 2 or 3 t ha-1 amended soil but root lesion severity index was lower only in chicken manure @ 2 t ha-1 treated plots. The fresh shoot weight and length were significantly high in chicken manure amendment @ 2 or 3 t ha-1 at 45th day after seeding. However, the fresh root weight, length, number of leaves and number of J2 recovered from the roots were non-significant. Key words: biomass; juveniles; Meloidogyne graminicola; root-knot severity index; root lesion severity index DOI: 10.3126/njst.v9i0.3160 Nepal Journal of Science and Technology 9 (2008) 21-27

scholarly journals Effect of coffee silver skin and brewers’ spent grain in the control of root-knot nematodes

2019 ◽  
Vol 56 (1) ◽  
pp. 30-41 ◽  
Author(s):  
N. Thligene ◽  
G. N. Mezzapesa ◽  
D. Mondelli ◽  
A. Trani ◽  
P. Veronico ◽  
...  
Keyword(s):  
Control Strategies ◽  
Nematode Population ◽  
Parasitic Nematodes ◽  
Initial Population ◽  
Infested Soil ◽  
Soil Nematode ◽  
Root Knot Nematode ◽  
Tomato Plants ◽  
Industry Waste ◽  
Spent Grain

SummaryPlant parasitic nematodes (PPN) are important pests of numerous agricultural crops especially vegetables, able to cause remarkable yield losses correlated to soil nematode population densities at sowing or transplant. The concern on environmental risks, stemming from the use of chemical pesticides acting as nematicides, compels to their replacement with more sustainable pest control strategies. To verify the effect of aqueous extracts of the agro-industry waste coffee silverskin (CS) and brewers’ spent grain (BSG) on the widespread root-knot nematode Meloidogyne incognita, and on the physiology of tomato plants, a pot experiment was carried out in a glasshouse at 25 ± 2 °C. The possible phytotoxicity of CS and BSG extracts was assessed on garden cress seeds. Tomato plants (landrace of Apulia Region) were transplanted in an artificial nematode infested soil with an initial population density of 3.17 eggs and juveniles/mL soil. CS and BSG were applied at rates of 50 and 100 % (1L/pot). Untreated and Fenamiphos EC 240 (nematicide) (0.01 μL a.i./mL soil) treated plants were used as controls. Reactive oxygen species (ROS) and chlorophyll content of tomato plants were estimated during the experiment. CS extract, at both doses, significantly reduced nematode population in comparison to the untreated control, although it was less effective than Fenamiphos. BSG extract did not reduce final nematode population compared to the control. Ten days after the first treatment, CS 100 %, BSG 50 % and BSG 100% elicited the highest ROS values, which considerably affected the growth of tomato plants in comparison to the untreated plants. The control of these pests is meeting with difficulties because of the current national and international regulations in force, which are limiting the use of synthetic nematicides. Therefore, CS extracts could assume economic relevance, as alternative products to be used in sustainable strategies for nematode management.

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