scholarly journals Plant-parasitic nematodes associated with Moringa tree (Moringa oleifera Lam.) in Adamawa, North Eastern Nigeria

2021 ◽  
Vol 13 (Volume 13, Issue 2) ◽  
pp. 185-196
Author(s):  
M.Y. Jada ◽  
M.Y. Adamu ◽  
M.B. Aji ◽  
G. Abdullahi
Keyword(s):  
Local Government ◽  
Nutritional Value ◽  
Moringa Oleifera ◽  
Sampling Site ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Vegetable Farmers ◽  
North Eastern ◽  
Plant Parasitic ◽  
Moringa Oleifera Lam

Abstract. Moringa (Moringa oleifera Lam.) is becoming an economically important crop because of its nutritional value, therefore, more land area is currently being devoted to its cultivation particularly by vegetable farmers. But right now, little is known about plant-parasitic nematodes as one of its probable pest problems. A survey was, therefore, carried out to determine the plant-parasitic nematodes (PPN) associated with Moringa tree in Adamawa State, Nigeria. Nine of the 21 local government areas (LGAs) of the state were randomly selected; and 10 moringa farms, indicating at least two household/home gardens, were picked from each of the selected local government area for the survey of PPN. In each selected sampling site, soil samples were taken from the base of randomly selected moringa plants to a depth of 15-25 cm using hand trowel and hoe. Composite sample from each LGA from root and soils were taken to Laboratory for nematode extraction. Nematodes were extracted from both soil and roots using Baermann Tray method. The Moringa tree root rhizosphere revealed the presence of 14 genera of plant-parasitic nematodes with specimens from Meloidogyne, Scutellonema, Aphelenchoides, and Hoplolaimus genera being more abundant and frequent. They recorded average prominence value of 123.96, 93.31, 63.83 and 61.83, respectively. Whereas in the roots, Meloidogyne and Scutellonema specimens were found more than the remaining plant-parasitic nematodes genera with an average prominence value of 50.92 and 22.26, respectively.

NEMATODE PARASITES OF WATERLEAF (Talinum triangulare) IN OBIO-AKPOR AND IKWERRE LOCAL GOVERNMENT AREAS OF RIVERS STATE, NIGERIA

2021 ◽  
Vol 5 (1) ◽  
pp. 140-150
Author(s):  
Adebowale Adegboyega Tanimola ◽  
A. O. Asimiea ◽  
G. Uwaoma
Keyword(s):  
Local Government ◽  
Sampling Technique ◽  
Nematode Species ◽  
Diversity Indices ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Nematode Parasites ◽  
Rivers State ◽  
Talinum Triangulare ◽  
Plant Parasitic

Waterleaf, Talinum triangulare is cultivated in home gardens and fields to improve nutritional quality for the family and a source of livelihood for farmers. However, the role of T. triangulare is often counteracted by plant-parasitic nematodes (PPNs). Effective management of PPNs will depend on the identification and determination of their population and distribution. A survey was conducted in two Local Government Areas (LGAs), Ikwerre and Obio-Akpor of Rivers State to identify plant-parasitic nematodes associated with waterleaf. Multistage random sampling technique was employed in the collection of 60 bulked soil and root samples across six waterleaf monoculture farming communities. The nematodes were extracted, identified and their population determined using standard procedures. Occurrences, relative importance values (RIV) and diversity indices were determined. Other data were analysed using descriptive statistics and analysis of variance. Six plant-parasitic nematodes genera were encountered in this study, Helicotylenchus, Pratylenchus, Paratylenchus, Meloidogyne, Scutellonema and Tylenchulus. Pratylenchus and Helicotylenchus were the most frequently occurring nematode pest genera with equal relative frequency of occurrence of 38.89%. Pratylenchus species with RIV of 61.34% was the most important nematode pest associated with waterleaf across the six farm communities. The dominance index of 0.71 for the nematode genera showed that some nematode species dominated others. Alakahia farms had the highest population of plant-parasitic nematodes (2,780) across the six farm communities, whereas Omagwa farms had the lowest (250). The study showed that nematode pests are associated with waterleaf and could be contributing to yield losses in this crop

scholarly journals A survey of plant-parasitic nematodes of yam farms in Awka-North local government area, Anambra state, Nigeria.

2016 ◽  
Vol 95 (1) ◽  
pp. 8950
Author(s):  
Vincent, C. Duru ◽  
Edith N. Nwankwo ◽  
Confidence U Ogbonna ◽  
A. E Onyido ◽  
O Adewuyi
Keyword(s):  
Local Government ◽  
Local Government Area ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Anambra State ◽  
Plant Parasitic

scholarly journals Survey of Plant-Parasitic Nematodes Associated with Yams in Ogun and Osun States of Nigeria

2008 ◽  
Vol 48 (4) ◽  
pp. 421-428 ◽  
Author(s):  
Ayodele Adegbite ◽  
Jelili Saka ◽  
Gideon Agbaje ◽  
Felix Osuloye
Keyword(s):  
Local Government ◽  
Random Sampling ◽  
Parasitic Nematode ◽  
Soil Samples ◽  
Plant Parasitic Nematode ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Ogun State ◽  
Plant Parasitic

Survey of Plant-Parasitic Nematodes Associated with Yams in Ogun and Osun States of NigeriaA survey was conducted to determine the types, frequency and population of plant parasitic nematodes associated with the soils and roots of Yam (Dioscoreaspecies) in all the Local Government Areas of Ogun and Osun States of Nigeria using random sampling soil and root and pie pan modification of Baerman funnel for plant parasitic nematode extraction. Ten and nine genera of plant parasitic nematodes were encountered both from the soils and root samples from the two States. Plant parasitic nematodes recovered includedScutellonemaspp.,Meloidogynespp.,Pratylenchusspp.,Trichodorusspp.,Helicotylenchusspp.,Radopholusspp.,Longidorusspp.,Xiphinemaspp.,Rotylenchulusspp andAphelenchoidesspecies.Scutellonemaspp.,Meloidogynespp., andPratylenchusspp were most widely distributed with frequency ratings of 70, 65 and 60% respectively in soil samples from Ogun State and in the root samples the three genera predominated with 60, 55 and 45% frequency ratings respectively.Meloidogynespp.,Scutellonemaspp., andPratylenchusspp were most widely distributed with frequency ratings of 65, 45 and 35% respectively in soil samples from Osun State and in the root samples the three genera predominated with 55, 35 and 35% frequency ratings respectively.

scholarly journals Occurrence, Diversity and Abundance of Nematode Pests of Pineapple (Ananas comosus) in Two Local Government Areas of Rivers State, Nigeria

2021 ◽  
Vol 25 (4) ◽  
pp. 665-675
Author(s):  
A.A. Tanimola ◽  
O. Olotu ◽  
A.O. Asimiea
Keyword(s):  
Local Government ◽  
Diversity Indices ◽  
Ananas Comosus ◽  
Parasitic Nematodes ◽  
Yield Losses ◽  
Plant Parasitic Nematodes ◽  
Standard Procedures ◽  
Abundance And Diversity ◽  
Rivers State ◽  
Plant Parasitic

Plant-parasitic nematodes (PPNs) contribute to yield losses in pineapple production. Limited studies have been conducted on plant-parasitic nematodes on pineapple despite reports of PPNs infecting it. A survey was conducted in Obio-Akpor and Ikwerre Local Government Areas (LGAs) of Rivers State to determine the occurrence, abundance and diversity of PPNs associated with pineapple. A total of 60 composite samples were collected from the two LGAs. Nematodes were extracted from soil and root samples using the modified Baermann technique and identified using standard procedures. Data were processed using relative frequency of occurrence (RFOC), relative importance values (RIVs), diversity indices, nematode population was calculated and analysis of variance. The most occurring plant-parasitic nematodes were Pratylenchus, Helicotylenchus, Meloidogyne, Scutellonema and Tylenchulus. In Obio Akpor LGA, Helicotylenchus with RFOC 33.3% was the most occurring nematode pests, while Pratylenchus was the most important plant-parasitic nematode (RIV 33.8%). In Ikwerre LGA, both Helicotylenchus and Pratylenchus have the same occurrence (RFOC 33.3%) with Pratylenchus being the most important nematode pest. Pratylenchus species with RIV of 52.4% were the most important PPNs associated with pineapple in both Obio-Akpor and Ikwerre LGAs. Dominance and Shannon- Weiner indices among the PPNs are 0.58 and 0.86, respectively. In Ikwerre and Obio-Akpor LGAs, Aluu (1530) and Rumuekini (630) pineapple farms have the highest population of PPNs, respectively. Ikwerre LGA (2,150) pineapple farms had more PPNs than Obio-Akpor LGA (660). Nematode pests are associated with pineapple in the two LGAs and could be contributing to yield losses.

The distribution of Xiphinema index and other parasitic nematodes associated with grapevines in north-eastern Victoria

1976 ◽  
Vol 16 (83) ◽  
pp. 932 ◽  
Author(s):  
JW Meagher ◽  
RH Brown ◽  
RH Taylor ◽  
AR Harris
Keyword(s):  
Virus Infection ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Southern France ◽  
Xiphinema Index ◽  
Detailed Survey ◽  
North Eastern ◽  
Plant Parasitic ◽  
Made In

Twenty-four vineyards in north-eastern Victoria were surveyed in 1969 for the presence of plant parasitic nematodes; in particular for Xiphinema index the vector of grape fanleaf virus (GFV). Eight genera were recorded, the most prevalent being Paratylenchus and Xiphinema (37 per cent and 32 per cent respectively, of all samples). X. index was present in nine vineyards, and 10 per cent of all samples. A more detailed survey was made in 1970 of those vineyards in which X. index was known to be present. X. index was found in 50 per cent of samples, and 74 per cent of all samples contained Xiphinema species. Ninety vines from X. index-positive samples on two vineyards were tested for presence of virus. Although no symptoms of virus infection were evident in the field, 52 per cent of vines were shown to be infected with latent strains of GFV. All X. index-infested vineyards are within a radius of 10 km of Rutherglen. It is not known how long X. index has been present, but its introduction was probably from southern France in the 1890s together with Phylloxera resistant rootstocks.

Management of Plant-Parasitic Nematodes in Florida Cotton Production

EDIS ◽  
2017 ◽  
Vol 2017 (2) ◽  
pp. 8
Author(s):  
Zane Grabau
Keyword(s):  
Parasitic Nematodes ◽  
Cotton Production ◽  
Plant Parasitic Nematodes ◽  
Fact Sheet ◽  
Plant Parasitic

This 8-page fact sheet written by Zane J. Grabau and published in January 2017 by the UF Department of Entomology and Nematology explains how to diagnose and manage nematode problems in cotton production.­http://edis.ifas.ufl.edu/ng015

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