International Journal of Nematology (2002) 12, 137-144

M. Araya and D. De Waele (2002)
Effect of soil type on the spatial distribution of Radopholus similis on banana roots
International Journal of Nematology 12 (2), 137-144
Abstract: The effect of soil type on the spatial distribution of Radopholus similis on banana (Musa AAA cv. Grand Naine) was evaluated under Costa Rican field conditions. Root samples were taken from soil blocks at 0 to 30, 30 to 60, and 60 to 90 cm from the pseudostem, and at every 15 cm depth, from 0 to 120 cm in non-flowering plants with a height range of 180-190 cm. Soil type did not affect the number of R. similis per plant nor their horizontal distribution. However, the distance from the pseudostem did affect the R. similis distribution. Averaging the three soils, the distribution was 39, 42 and 19% for 0-30, 30-60 and 60-90 cm from the pseudostem, respectively. The vertical distribution of R. similis changed with soil type. A higher percentage of R. similis was observed in the upper 30 cm layer in any soil. Therefore, it was confirmed that samples for monitoring nematode populations should be taken within the 30 cm radius of the plant base and down to 30 cm depth from the soil surface.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Mario Araya, Dirk de Waele

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Radopholus similis	Banana/plantain (Musa)	Costa Rica