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1 February 2012 Effects of Irrigation on the Seasonal Abundance of Empoasca vitis inNorth-Italian Vineyards
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Abstract

The effect of irrigation on the abundance of Empoasca vitis (Göthe) populations was investigated in four vineyards located in northeastern Italy. In two experiments, we compared leafhopper population densities in plots irrigated (micro-spray irrigation system) or nonirrigated. In another experiment, we studied the effect of various irrigation systems on E. vitis populations over two successive seasons. In particular, five treatments were compared: control (not irrigated), traditional drip system, three types of subirrigation varying in distance from the row (40, 135, and 95 cm). In this vineyard, stem water potential was monitored with a pressure chamber. E. vitis population densities were affected by irrigation, with higher densities of this pest recorded on irrigated vines. Highest E. vitis densities were detected in drip irrigation plots compared with nonirrigated plots where water stress was highest. Moderate water stress (subirrigation plots) was associated with intermediate leafhopper densities. Implications for integrated pest management are discussed.

© 2012 Entomological Society of America
D. Fornasiero, C. Duso, A. Pozzebon, D. Tomasi, F. Gaiotti, and F. Pavan "Effects of Irrigation on the Seasonal Abundance of Empoasca vitis inNorth-Italian Vineyards," Journal of Economic Entomology 105(1), 176-185, (1 February 2012). https://doi.org/10.1603/EC11218
Received: 6 July 2011; Accepted: 1 September 2011; Published: 1 February 2012
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