Populations of grape phylloxera gallicoles on rootstock foliage in Hungary

Authors

  • J. Granett
  • L. Kocsis

DOI:

https://doi.org/10.5073/vitis.2000.39.37-41

Keywords:

grape phylloxera, Daktulosphaira vitifoliae, Vitis, gallicole, , demography, populations

Abstract

Populations of gallicole grape phylloxera (Daktulosphaira vitifoliae FITCH) were monitored in Keszthely, Hungary from June through October 1998 on foliage of the Vitis berlandieri PLANCH. x V. riparia MICHX. rootstock cultivar Teleki 5 C. Though population size peaked in August, leaves from June through September were equally supportive of gallicole development and egg production. Demography varied with leaf position on shoots with the leaf in the terminal position having the most immature populations. Leaves 5 through 7 from the shoot terminal had highest population densities and the highest egg production. Population densities correlated with gall densities. Populations on the rootstock cultivar Rupestris du Lot and Vitis amurensis RUPR. were low but populations were high on the rootstock cultivars 101-14 MGT, T. K. 5 BB and Fercal. However, magnitude of phylloxera eggs/ adult on cultivars tested was not numerically distinguishable. High phylloxera population numbers were correlated with decreased vine productivity as measured by shoot growth.

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Published

2015-06-12

Issue

Vol. 39 No. 1 (2000): Vitis

Section

Article

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