Occurrence and Diversity of Nematode Destroying Fungi in Banana Production Zones in Maragua, Kenya (original) (raw)
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Nematropica, 2015
A preliminary and limited nematode survey was conducted in the three main banana-producing areas of South Africa, namely Onderberg, Hazyview (both in Mpumalanga Province), and the South Coast of Kwazulu/Natal Province. Root and soil samples were taken from ‘Chinese Cavendish’ (AAA), ‘Dwarf Cavendish’ (AAA), ‘Grand Nain’ (AAA), ‘Williams’ (AAA) and ‘Goldfinger’ (syn. ‘FHIA-01’, AAAB). The burrowing nematode, Radopholus similis, the coffee root-lesion nematode, Pratylenchus coffeae, mixed populations of root-knot nematodes, Meloidogyne incognitaand Meloidogyne javanica,and the spiral nematodes, Helicotylenchus dihystera, H. multicinctus, H. pseudorobustus, and Scutellonema brachyurusoccurred in all three areas with the root-knot and spiral nematodes being most abundant. Radopholus similis, a well known damaging pest on banana, was detected at low population levels. Other species found were Rotylenchulus reniformis, Paratylenchus minutus, and Paratrichodorus minor. ‘Chinese Cavendish’,...
Revue Nématol, 1988
A smdy of plant parasitic nemamdes occmring in the banana (Musa AA4 cv. Poyo) cultivated areas of the Ivory Coast registered 21 species belonging to 17 genera. Eight species from seven genera were recorded in-tbe Ivory Coast for the first time. Two of tbem, Paratrophurus clavicaudatus and Paratylenchus aquaticus had not yet been found before in banana rhizosphere. Pratylenchus coffeae was registered for the first time in tbe Ivory Coast; its possible mode of introduction is discussed. Besides tbe major parasites (Radopholus similis, Helicotylenchus multicinctus and Hoplolaintus pararobustusl, P. coffeae and Rotylenchulus reniformis are mentioned as potential +&reats to banana culture. Frequency, abundance and diversity of nematode species are discussed in relation to banana culture. RESUME Populations de néntatodes dans les sols sous bananier, cv. Poyo, en Côte d'ivoire. 1. La nématofaune observée dans les aires de production bananière.
Journal of Botanical Research, 2020
The reviews on production of banana during the recent years were not a satisfying one with respect to fourth position of Kerala in area of cultivation in India. Among so many factors for this declination, plant parasitic nematodes also found as a major negative factor. Thus the present study tried to prove this predict and conducted a survey in the unexplored rhizosphere region of an important crop banana (Nendran) in Palakkad taluk of Kerala, India during the post monsoon season of 2017. A total of twenty seven samples each were collected from banana rhizosphere soil and roots and processed for this study. The analysis revealed that the most abundant nematode population was Radopholus spp. and most frequently occurred genus was Meloidogyne spp. in the studied banana fields. The major diversity showing area were Elappully panchayath for rhizosphere soil samples and Kannadi panchayath for root samples. Different plant parasitic nematodes such as Aphelenchus spp., Criconemoides spp., Dory laimoides spp., Helicotylenchus spp., Hoplolaimus spp., Meloidogyne sp p., Pratylenchus spp., Radopholus spp., Rotylenchulus spp., Tylenchoryn chus spp. and Tylenchus spp. were observed in both soil and root samples examined.
Nematropica, 2013
Banana is one of the most important food and cash crop in Zimbabwe as well as in the world. Plant-parasitic nematodes are one of the major constraints of banana production and are therefore a threat to food security. A field survey to quantify and classify plant-parasitic nematodes associated with banana was conducted in Rusitu Valley, which is one of the major smallholder banana production areas of Zimbabwe. Plant-parasitic nematodes were surveyed from soil and banana roots collected from forty smallholder banana farms. Meloidogyne spp., Radopholus similis, Pratylenchus spp. and Helicotylenchus spp. were the major plant-parasitic nematodes associated with banana plants in Rusitu Valley. In terms of absolute frequencies, Meloidogyne, Radopholus, Pratylenchus, followed by Helicotylenchus were the most frequently found genera throughout the soil assay. However, Meloidogyne was the most abundant whilst Radopholus the least in terms of total number of nematodes in soil in all the sampled fields.
Nematode Diversity in Banana Rhizosphere From West Bengal, India
Survey on plant and soil nematodes associated with banana plantations in different banana growing districts of West Bengal (India), revealed that the occurrence of the most economically important genera of plant parasitic nematodes were Pratylenchus, Meloidogyne, Helicotylenchus, Tylenchorhynchus, Hoplolaimus, Rotylenchulus, Hirschmanniella, Criconemoides. Altogether there were seventeen species of plant parasitic nematodes viz.
Notulae Scientia Biologicae
Attappady is a region of immense biological importance comes under the Nilgiri Biosphere Reserve area of India at Palakkad district. Biodiversity study of this hill area has great importance in conservative science. Except a national range study for nematode fauna of banana (Musa spp.) in Indian banana fields, a detailed survey of this agriculturally and environmentally important area has not reported till now. The diversity analysis of plant parasitic nematodes was done with samples taken from rhizosphere soil and roots of banana at this area. Comparing with the reported nationwide study the present study newly reported the presence of Aphelenchus spp., Dorylaimoides spp., Hoplolaimus spp., Rotylenchulus spp., Tylenchorynchus spp. and Tylenchus spp. from the crop banana other than the already reported one’s such as Helicotylenchus spp., Meloidogyne spp., Pratylenchus spp. and Radopholus spp. The analysis of nematode genera in different banana cultivars such as Musa × paradisiaca L....
Plant parasitic nematodes associated with banana crop in Crete, Greece
Acta agriculturae Slovenica, 2000
Banana is one of the most important food and cash crop in Zimbabwe as well as in the world. Plant-parasitic nematodes are one of the major constraints of banana production and are therefore a threat to food security. A field survey to quantify and classify plant-parasitic nematodes associated with banana was conducted in Rusitu Valley, which is one of the major smallholder banana production areas of Zimbabwe. Plant-parasitic nematodes were surveyed from soil and banana roots collected from forty smallholder banana farms. Meloidogyne spp., Radopholus similis, Pratylenchus spp. and Helicotylenchus spp. were the major plant-parasitic nematodes associated with banana plants in Rusitu Valley. In terms of absolute frequencies, Meloidogyne, Radopholus, Pratylenchus, followed by Helicotylenchus were the most frequently found genera throughout the soil assay. However, Meloidogyne was the most abundant whilst Radopholus the least in terms of total number of nematodes in soil in all the sampled fields.
Plant-parasitic nematodes associated with banana in Rusitu Valley, Zimbabwe
Nematropica
2013. Plant-parasitic nematodes associated with banana (Musa spp.) in Rusitu Valley, Zimbabwe. Nematropica 43:113-118. Banana is one of the most important food and cash crop in Zimbabwe as well as in the world. Plant-parasitic nematodes are one of the major constraints of banana production and are therefore a threat to food security. A field survey to quantify and classify plant-parasitic nematodes associated with banana was conducted in Rusitu Valley, which is one of the major smallholder banana production areas of Zimbabwe. Plant-parasitic nematodes were surveyed from soil and banana roots collected from forty smallholder banana farms. Meloidogyne spp., Radopholus similis, Pratylenchus spp. and Helicotylenchus spp. were the major plant-parasitic nematodes associated with banana plants in Rusitu Valley. In terms of absolute frequencies, Meloidogyne, Radopholus, Pratylenchus, followed by Helicotylenchus were the most frequently found genera throughout the soil assay. However, Meloid...
Nematology, 2012
The composition of the nematode fauna at two different agrosystems (banana monocultures and mixed banana-palmito plantations) was investigated at six study sites on the coastal plain of southern Brazil. Nematode abundance was higher and the number of families was lower (25 compared to 33) in the soil of banana monocultures. The assemblages in the soil of the banana monocultures were dominated by bacterial feeders and plant parasites, whereas in the soil of the mixed plantations the proportion of the other trophic groups was higher. In the monocultures, the percentage of families categorised as colonisers (c-p 1 families) was higher and the persisters lower. The difference in the assemblage of c-p groups was significant between sites of the two different systems. Principal component analysis (PCA) ordination of the samples by nematode family composition showed site-specific assemblages, similarity between two sites of each system and significant dissimilarities between the two systems. The MI 1-5 and the MI 2-5 were lower in the banana monocultures. Additionally, the MI 2-5 of banana site B2 was significantly higher than that of the two other banana sites. The ratio F/B was higher and the ratio (F + B)/plant feeders was lower in the banana-palmito plantations. The differences between the systems in nearly all measured parameters indicate a higher degree of disturbance and nutrient enrichment of the soil under monocultures. However, a low number of plant parasites and dominance of c-p 3 taxa at both agroecosystems show that the soil of both agroecosystems seems to be of an advanced successional stage. This may be a result of a less intensive 'organic' cultivation without the use of plant protection products and fertilisers and with additional non-host plants. Despite many non-controlled variables in the smallholder systems, according to the results the nematodes can be regarded as suitable indicators of soil disturbance in banana and banana-palmito agro-ecosystems.
Nematology
Summary Bananas (Musa spp.) are considered the most important fruit crop in Kenya, grown mostly by smallholder farmers. However, in the past two decades production has declined and has largely been attributed to plant pathogens, including plant-parasitic nematodes. To assess the understanding and awareness that banana farmers have of nematodes, a survey was conducted. The incidence, abundance and distribution of nematodes in relation to altitude were determined for different banana types on 180 farms and the pathogenicity of Pratylenchus goodeyi, originating from three different altitudinal locations, was compared on two banana cultivars. Just 2.3% of farmers were aware of nematode damage and symptoms, none of whom applied any management measures. The highest abundance of nematodes was recorded at an altitude range of 1601-2000 m a.s.l., with Pratylenchus, Meloidogyne and Helicotylenchus being the predominant genera. Across all altitudinal locations, cooking banana had higher densit...