Nematropica (1998) 28, 31-39

C. Villenave and P. Cadet (1998)
Interactions of Helicotylenchus dihystera, Pratylenchus pseudopratensis, and Tylenchorhynchus gladiolatus on two plants from the Soudano-Sahelian zone of West Africa
Nematropica 28 (1), 31-39
Abstract: Interactions between Helicotylenchus dihystera, Pratylenchus pseudopratensis, and Tylenchorhynchus gladiolatus were studied on millet (Pennicetum typhoides) and acacia (Acacia holosericea). Interactions between H. dihystera and P. pseudopratensis were similar on both plants; reproduction of each was lower when the other nematode species was present. T. gladiolatus reproduction was stimulated in the presence of the other species on millet, whereas it was inhibited on acacia at the lowest inoculum levels (50 and 200 nematodes/plant). Damage to plants was not density dependent. Damage to millet differed with the species composition of the community. Only monospecific populations of T. gladiolatus and P. pseudopratensis significantly reduced the millet biomass, particularly the root system. H. dihystera reduced the pathogenicity of the two other species on this plant. Each nematode assemblage suppressed dry shoot and root weight of acacia; most assemblages reduced the number of Rhizobium nodules on the root system.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Patrice Cadet

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
damage/losses/economics

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicotylenchus dihystera	Acacia (crop)	Senegal
	Helicotylenchus dihystera	Cenchrus (crop)	Senegal
	Pratylenchus pseudopratensis	Acacia (crop)	Senegal
	Pratylenchus pseudopratensis	Cenchrus (crop)	Senegal
	Tylenchorhynchus gladiolatus	Acacia (crop)	Senegal
	Tylenchorhynchus gladiolatus	Cenchrus (crop)	Senegal