Virus problems in zucchini cultivation.

Main research question/goal

Next to mildew infections, infections with viruses are an emerging problem in the expanding zucchini cultivation in Flanders. The viruses of major concern are transmitted by aphids, and include Zucchini yellow mosaic virus (ZYMV), Watermelon mosaic virus (WMV), Papaya ringspot virus (PRSV) and Cucumber mosaic virus (CMV). During this research project the introduction and distribution of these viruses are explored. Our aim is to develop and implement an integrated and sustainable control strategy based on the results of a thorough epidemiological study combined with research driven effective control measures.

Research approach

The project consists of four work packages. The first two work packages focus on the introduction and distribution of both the viruses (WP1) and the vectors (WP2). In the third work package, possible control strategies (including cultivar choice) and control of alternative hosts or vectors (adapted to the epidemiological data obtained in WP1 & 2) are investigated. In the fourth work package an integrated control strategy is being developed, and reviewed for implementation by the sector.

Relevance/Valorisation

This study specifically benefits zucchini growers, consumers and the environment. An integrated strategy to constrain the damage caused by the different zucchini viruses, will result in a high quality product and a more sustainably culture technique. The reduction of pesticide use will also limit the impact on the environment and avoids resistance development in the vectors. A decrease in virus infections willgive a new impulse to zucchini production in Flanders.