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Spatial Distribution of Plant-Parasitic Nematodes in Semi-Arid Vitis vinifera Vineyards in Washington

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Title Spatial Distribution of Plant-Parasitic Nematodes in Semi-Arid Vitis vinifera Vineyards in Washington
Names Howland, Amanda D. (creator)
Schreiner, R. Paul (creator)
Zasada, Inga A. (creator)
Date Issued 2014-12 (iso8601)
Note To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by the Society of Nematologists and can be found at: http://journals.fcla.edu/jon/index.
Abstract The most commonly encountered plant-parasitic nematodes in eastern Washington Vitis vinifera vineyards are Meloidogyne
hapla, Mesocriconema xenoplax, Pratylenchus spp., Xiphinema americanum, and Paratylenchus sp.; however, little is known about their
distribution in the soil profile. The vertical and horizontal spatial distribution of plant-parasitic nematodes was determined in two
Washington V. vinifera vineyards. Others variables measured in these vineyards included soil moisture content, fine root biomass, and
root colonization by arbuscular mycorhizal fungi (AMF). Meloidogyne hapla and M. xenoplax were aggregated under irrigation emitters
within the vine row and decreased with soil depth. Conversely, Pratylenchus spp. populations were primarily concentrated in vineyard
alleyways and decreased with depth. Paratylenchus sp. and X. americanum were randomly distributed within the vineyards. Soil water
content played a dominant role in the distribution of fine roots and plant-parasitic nematodes. Colonization of fine roots by AMF
decreased directly under irrigation emitters; in addition, galled roots had lower levels of AMF colonization compared with healthy
roots. These findings will help facilitate sampling and management decisions for plant-parasitic nematodes in Washington semi-arid
vineyards.
Genre Article
Topic Arbuscular mycorrhizal fungi colonization
Identifier Howland, A. D., Schreiner, R. P., & Zasada, I. A. (2014). Spatial Distribution of Plant-Parasitic Nematodes in Semi-Arid Vitis vinifera Vineyards in Washington. Journal of Nematology, 46(4), 321-330.

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