Nematropica (2007) 37, 345-355

R.M. Souza, A.R. Volpato and A.P. Viana (2007)
Field assessment of different sampling strategies for coffee plantations parasitized by Meloidogyne exigua
Nematropica 37 (2), 345-355
Abstract: To this date, there has been no assessment of strategies for quantitative sampling of Meloidogyne exigua. This imposes a major obstacle for realistic estimation of nematode population levels, establishment of damage thresholds, and improvement of the decision process for nematode management in coffee plantations. In this work, a commercial coffee plantation naturally infested by M. exigua was sampled for two years for comparison of different sampling core locations and J2- and root gallingrelated epidemiological variables. The sampling strategy primarily used by nematologists and agricultural workers-sampling near the edge of the coffee canopy to quantify second-stage juveniles in the soil-was revealed as inadequate for assessment of M. exigua populations. The best strategy for this nematode is to quantify the number of root galls/5 g of roots obtained from sampling cores located under the canopy, at the depth of 0-25 cm.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Meloidogyne exigua	Coffee (Coffea)	Brazil (south)