scholarly journals Survey of Wilt (Fusarium udum) and the Cyst Nematode (Heterodera cajani) Incidence on Pigeonpea of Prayagraj District

2020 ◽  
pp. 23-28
Author(s):  
Amit Kumar Maurya ◽  
Sobita Simon ◽  
Vinny John ◽  
Abhilasha A. Lal
Keyword(s):  
Disease Incidence ◽  
Mesh Size ◽  
Pigeon Pea ◽  
Cyst Nematode ◽  
Wilt Disease ◽  
Soil Samples ◽  
Fusarium Udum ◽  
Pump House ◽  
Very High ◽  
Heterodera Cajani

A survey was conducted in selected villages of Prayagraj district to evaluate the disease incidence of Fusarium (Fusarium udum) wilt and cyst nematode (Heterodera cajani) of pigeon pea (Cajanus cajan). Soil and roots were collected from the rhizosphere of infested pigeonpea plants. The maximum wilt incidence was recorded (57.6%) in Dari village followed by Pump House (56%), Pahlu ka Purwa (51.2%) and the lowest incidence of wilt was recorded in Chaka (12.8%), Naini (11.2%) and Jhusi (9.6%) in the year 2016. For cyst nematode, soil samples was collected from selected fields, the soil was mixed thoroughly and 500 g of the soil was processed following Cobb’s sieving and decanting method where cyst and J2’s were separated in separate mesh size sieves. It was observed that infestation of Heterodera cajani was very high in Jari (51%) followed by Naini (41%). The minimum infestation of Heterodera cajani was found in Meza village which was responsible for wilt disease in pigeonpea concluding that Fusarium wilt of pigeonpea is a major problem in Prayagraj district of U.P. India.

scholarly journals Distribution of Pigeon Pea Cyst Nematode and Root-Knot Nematodes in Major Sesame Growing Areas in Myanmar

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1457
Author(s):  
Yu Yu Min ◽  
Thu Htet Naing ◽  
Nwe Nwe Htun ◽  
Aung Kyaw Myint ◽  
Yuri Ichinose ◽  
...  
Keyword(s):  
Parasitic Nematode ◽  
Pigeon Pea ◽  
Cyst Nematode ◽  
Soil Samples ◽  
Nematode Density ◽  
Root Knot Nematodes ◽  
Cropping Patterns ◽  
Meloidogyne Spp ◽  
The Mean ◽  
Heterodera Cajani

The pigeon pea cyst nematode, Heterodera cajani, is an economically important plant-parasitic nematode in sesame production. The objective of the study was to investigate distribution of H. cajani in the major sesame producing areas in Myanmar. Before cultivation, soil samples were collected in 96 local farmer’s fields: (19 fields in Magway, 20 fields in Mandalay, 14 fields in Sagaing and 43 in Nay Pyi Taw), and nematode density was quantified by real-time PCR. The cyst nematode was detected in 63.2% of the fields in Magway and the mean density was 22.6 eggs equivalent (20 g soil)−1. In Mandalay and Nay Pyi Taw, the cyst nematode was detected in 40.0% and 18.6% of the fields with the mean densities of 9.9 and 21.0 eggs equivalent (20 g soil)−1, respectively. By contrast, the cyst nematode was not detected in Sagaing fields, in which sesame is rotated with paddy rice. Infestation of root-knot nematodes (RKN, Meloidogyne spp.) was also evaluated, because sesame is generally rotated with rice and pulses, which are attacked by RKN. The results showed 25.6% infestation of RKN with a mean density of 34.3 eggs equivalent (20 g soil)−1 only in Nay Pyi Taw, while there was no infestation in Magway, Mandalay, and Sagaing. The relationships between the nematode infestation level and the cropping patterns in each sesame growing area in Myanmar were discussed.

Further Notes On the Pigeon-Pea Cyst Nematode, Heterodera Cajani

Nematologica ◽  
1970 ◽  
Vol 16 (4) ◽  
pp. 477-482 ◽  
Author(s):  
C.L. Sethi ◽  
P.K. Koshy ◽  
G. Swarup
Keyword(s):  
Pigeon Pea ◽  
Cyst Nematode ◽  
Heterodera Cajani

Molecular diagnostics of the pigeon pea cyst nematode, Heterodera cajani Koshy, 1967, using real-time PCR

Nematology ◽  
2021 ◽  
pp. 1-6
Author(s):  
Tatiana V. Roubtsova ◽  
Sergei A. Subbotin
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Pigeon Pea ◽  
Cyst Nematode ◽  
Taqman Probe ◽  
28S Rrna ◽  
Specific Primer ◽  
Pcr Assay ◽  
Species Specific ◽  
Heterodera Cajani

Summary The pigeon pea cyst nematode, Heterodera cajani, is an important nematode pest of pigeon pea that is present in all major growing regions of this crop in India and reported from Pakistan, Egypt and Myanmar. In this study, a new real-time PCR assay for detection of H. cajani using a species-specific primer and a TaqMan probe was developed. The primers and a probe were designed to amplify the COI gene fragment. The specificity of the primer-probe set was tested in singleplex or multiplex reactions against target and non-target nematodes. In multiplex real-time PCR experiments with the specific and universal primer-probe sets, the signals were simultaneously observed for COI and D3 of 28S rRNA target genes. The results showed that the real-time PCR assay with species-specific primer and probe was sensitive enough to detect H. cajani DNA extracted from 0.003 egg or second-stage juvenile.

scholarly journals A Peri-Implant Disease Risk Score for Patients with Dental Implants: Validation and the Influence of the Interval between Maintenance Appointments

2019 ◽  
Vol 8 (2) ◽  
pp. 252 ◽  
Author(s):  
Miguel de Araújo Nobre ◽  
Francisco Salvado ◽  
Paulo Nogueira ◽  
Evangelista Rocha ◽  
Peter Ilg ◽  
...  
Keyword(s):  
High Risk ◽  
Risk Score ◽  
Disease Risk ◽  
Disease Incidence ◽  
Risk Groups ◽  
Risk Profile ◽  
Moderate Risk ◽  
C Statistic ◽  
Disease Risk Score ◽  
Very High

Background: There is a need for tools that provide prediction of peri-implant disease. The purpose of this study was to validate a risk score for peri-implant disease and to assess the influence of the recall regimen in disease incidence based on a five-year retrospective cohort. Methods: Three hundred and fifty-three patients with 1238 implants were observed. A risk score was calculated from eight predictors and risk groups were established. Relative risk (RR) was estimated using logistic regression, and the c-statistic was calculated. The effect/impact of the recall regimen (≤ six months; > six months) on the incidence of peri-implant disease was evaluated for a subset of cases and matched controls. The RR and the proportional attributable risk (PAR) were estimated. Results: At baseline, patients fell into the following risk profiles: low-risk (n = 102, 28.9%), moderate-risk (n = 68, 19.3%), high-risk (n = 77, 21.8%), and very high-risk (n = 106, 30%). The incidence of peri-implant disease over five years was 24.1% (n = 85 patients). The RR for the risk groups was 5.52 (c-statistic = 0.858). The RR for a longer recall regimen was 1.06, corresponding to a PAR of 5.87%. Conclusions: The risk score for estimating peri-implant disease was validated and showed very good performance. Maintenance appointments of < six months or > six months did not influence the incidence of peri-implant disease when considering the matching of cases and controls by risk profile.

scholarly journals ANALISIS C-ORGANIK, NITROGEN DAN C/N TANAH PADA LAHAN AGROWISATA BEKEN JAYA DI KABUPATEN KUANTAN SINGINGI

2020 ◽  
Vol 5 (1) ◽  
pp. 11
Author(s):  
Trinop Sagiarti ◽  
Deno Okalia ◽  
Gusti Markina
Keyword(s):  
Land Use ◽  
Random Sampling ◽  
Soil Analysis ◽  
Chemical Properties ◽  
Chemical Characteristic ◽  
Soil Samples ◽  
Organic N ◽  
Total N ◽  
Gas Drilling ◽  
Very High

Soil fertility determined by land management . Land use in the farmers to Beken Jaya in Kuantan Singingi has been going on for seven years to technique fertilizing not recommended, so it is important to knew soil chemical characteristic are now being to sustainable agriculture.This research in the soil samples uses the method purposive random sampling in 15 points gas drilling land as deep as 20 cm.Parameter examined is pH , C-organic , N-total , N-available and ratio C / N. All the data compared to table criteria of the chemical properties the ground by LPT 1993. Based on the results of the soil analysis in Agrowisata Beken Jaya can  be concluded features chemical pH 5,88 -6,41 ( criteria midle acid ) , C-organik 0.25 % - 1,18 % ( criteria very low until low ) , N-total 0,30 -1,16 % ( criteria moderate to very high ), and C/N 0,24-3,97 (criteria very low)

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