Nematodes associated with oil palms (Elaeis guineensis Jacq.) affected by but rot disease
This work studied the presence of nematodes and one of several abnormal conditions of the soil in oil palm looking for relationships among them. External and internal tissue were sampled from adult (7 years old or more] and young palms (3 to 5 years old], showing typical symptoms of but rot (PC), short Leaves (HC) plus red ring disease (AR), PC - HC - AR, and without disease symptoms (healthy). The tissue samples were analyzed for nematodes following a modified Oostembrink's methodology. Samples were taken in the zones of Cumaral and San Carlos de Guaroa (Meta), and Villanueva (Casanare) in Colombia. Rhadinaphelenchus cocophilus was found in the aerial part of oil palms exhibiting HC - AR symptoms. The family Rhabditidae was the only one detected in the aerial part of oil palms with PC. The nematodes Helicotylenchus sp., Paratylenchus sp. and Tylenchorhynchus sp. were present in roots of palms with PC but at a low frequency and density. Saprophytic nematodes were also present in roots at a higher frequency and density. Paratylenchus sp., Críconemella sp., Longidorus sp. and Xiphinema sp., as well as the nematodes detected in roots, were present in the soil but at a low frequency and density. No direct relationship was found between the PC and the nematodes reported as plant parasites.
| Main Authors: | , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Fedepalma
1999
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| Online Access: | https://publicaciones.fedepalma.org/index.php/palmas/article/view/694 |
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