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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730
EISSN: 1021-9730
Vol. 29, No. 4, 2021, pp. 471-482 		Bioline Code: cs21030
Full paper language: English
Document type: Research Article
Document available free of charge

African Crop Science Journal, Vol. 29, No. 4, 2021, pp. 471-482

 en PREVALENCE OF PLANT-PARASITIC NEMATODES IN RICE FIELDS IN GHANA
Nyaku, S.T.; Lutuf, H.; Honger, J.O.; Dede, A.; Brentu, F.C.; Benissan, R.; Osabutey, S.; Larbi, V. i; Koranteng, E. & Afun, C.

Abstract

Rice ( Oryza sativa check for this species in other resources L.) is one of the most cultivated crops worldwide whose production in sub-Saharan Africa is extensively affected by root nematodes. The objective of this study was to identify and establish the distribution of plant-parasitic nematodes (PPNs), in rice growing fields within different regions of Ghana. Soil and root samples were taken from rice fields, namely fourteen from Volta Region, eleven from the Soil and Irrigation Research Centre (SIREC), Kpong (Eastern Region); and five from Dawhenya (Greater Accra Region). The soil samples were taken from 0-30 cm depths, together with root samples. A total of twenty-four nematode genera were identified in soil and root samples from the three regions. These included: Aphelenchus check for this species in other resources spp., Belonolaimus check for this species in other resources spp., Ditylenchus check for this species in other resources spp., Dolichodorus check for this species in other resources spp., Helicotylenchus check for this species in other resources spp., Hemicriconemoides check for this species in other resources spp. Hemicycliophora check for this species in other resources spp. Heterodera check for this species in other resources spp., Hirschmaniella check for this species in other resources spp., Hoplolaimus check for this species in other resources spp., Longidorus check for this species in other resources spp., Meloidogyne check for this species in other resources spp., Paralongidorous spp., Paratylenchus check for this species in other resources spp., Pratylenchus check for this species in other resources spp., Radopholus check for this species in other resources spp., Rhabditida spp., Rotylenchulus check for this species in other resources spp., Scutellonema check for this species in other resources spp., Trichodorus check for this species in other resources spp., Tylenchornchus spp., Tylenchulus check for this species in other resources spp., Tylenchus check for this species in other resources spp. and Xiphinema check for this species in other resources spp. In the Volta Region, Tylenchus spp. was the most abundant (29.01%) in the soil; while Meloidogyne spp. was most the abundant (36.86%) in the roots. In Dawhenya regions, Meloidogyne spp. was the most abundant (26.96%) in the soil; while Tylenchus spp. was the most abundant (25.94%) in the roots. In the Eastern Region, Meloidogyne spp. was the most abundant (41.7%) in the soil; while Pratylenchus spp. was the most abundant (36.1%) in the roots. These nematodes threaten rice production in Ghana, if not managed well in farmer’s fields.

Keywords
Meloidogyne spp.; Oryza sativa; Volta region

 
 fr
Nyaku, S.T.; Lutuf, H.; Honger, J.O.; Dede, A.; Brentu, F.C.; Benissan, R.; Osabutey, S.; Larbi, V. i; Koranteng, E. & Afun, C.

Résumé

Le riz ( Oryza sativa check for this species in other resources L.) est l’une des cultures les plus cultivées au monde dont la production en Afrique subsaharienne est largement affectée par les nématodes des racines. L’objectif de cette étude était d’identifier et d’établir la répartition des nématodes phytoparasites (NPP) dans les rizières de différentes régions du Ghana. Des échantillons de sol et de racines ont été prélevés dans les rizières, à savoir quatorze de la région de la Volta, onze du Centre de Recherche sur les Sols et l’Irrigation (SIREC), Kpong (région de l’Est) ; et cinq de Dawhenya (région du Grand Accra). Les échantillons de sol ont été prélevés à des profondeurs de 0 à 30 cm, ainsi que des échantillons de racines. Au total, vingt-quatre genres de nématodes ont été identifiés dans des échantillons de sol et de racines des trois régions. Ceux-ci comprenaient : Aphelenchus check for this species in other resources spp., Belonolaimus check for this species in other resources spp., Ditylenchus check for this species in other resources spp., Dolichodorus check for this species in other resources spp., Helicotylenchus check for this species in other resources spp., Hemicriconemoides check for this species in other resources spp. Hemicycliophora check for this species in other resources spp. Heterodera check for this species in other resources spp., Hirschmaniella check for this species in other resources spp., Hoplolaimus check for this species in other resources spp., Longidorus check for this species in other resources spp., Meloidogyne check for this species in other resources spp., Paralongidorous spp., Paratylenchus check for this species in other resources spp., Pratylenchus check for this species in other resources spp., Radopholus check for this species in other resources spp., Rhabditida spp., T. ., Tylenchornchus spp., Tylenchulus check for this species in other resources spp., Tylenchus check for this species in other resources spp. et Xiphinema check for this species in other resources spp. Dans la région de la Volta, Tylenchus spp. était le plus abondant (29,01 %) dans le sol; tandis que Meloidogyne spp. était le plus abondant (36,86%) dans les racines. Dans les régions de Dawhenya, Meloidogyne spp. était le plus abondant (26,96 %) dans le sol; tandis que Tylenchus spp. était le plus abondant (25,94 %) dans les racines. Dans la région orientale, Meloidogyne spp. était le plus abondant (41,7%) dans le sol; tandis que Pratylenchus spp. était le plus abondant (36,1 %) dans les racines. Ces nématodes menacent la production de riz au Ghana, s’ils ne sont pas bien gérés dans les champs des agriculteurs.

Mots Clés
Meloidogyne spp.; Oryza sativa; région de la Volta

 
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