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Funded Project |
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Funding Program:
IPM Partnership Grants |
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Project Title:
Adopting New IPM Methods for Cucurbit Virus Diseases |
Project Directors (PDs):
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Lead State: MD Lead Organization: University of Maryland |
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Cooperating State(s):
Delaware |
| Undesignated Funding: $41,760 |
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Start Date: May-01-2008 End Date: Apr-30-2009 |
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Pests Involved: weeds, aphids, mosaic viruses |
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Site/Commodity: cucurbits, pumpkins |
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Area of Emphasis: resistance |
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Summary:
This proposal will address a priority need that was expressed by the IPM Vegetable working gropu in 2004, 2005, and 2007: the need for greater information on IPM for virus diseases of cucurbits. Our overarching goal is to help pumpkin producers in the region adopt new IPM methods to manage virus diseases. The primary pumpkin virus diseases in the mid-Atlantic are cucumber mosaic virus (CMV), papaya ringspot virus type W (PRSV-W), watermelon mosaic virus (WMV), and zucchini yellows mosaic virus (ZYMV). These diseases are spread by aphids in a non-persistent manner and therefore these viruses are primarily introduced into pumpkins by aphid transmission from a nearby cucurbit crop or from overwintering weed reservoirs. Insecticide applications, although used, are not effective. Recently virus resistance has become available in some cucurbits, most notably squash, and the release of commercial pumpkin cultivars with virus host resistance will increase in 2008 and 2009. Prevalence of each of the four viruses in the pumpkin crop and weed hosts will be evaluated in Maryland, Delaware, and southeastern Pennsylvania. The aphid vectors (including Aphis gossypii, a species new to the mid-Atlantic) will be monitored, enumerated, and speciated. This project will develop IPM strategies that encompass management of weed hosts, aphids, and host resistance. Growers will learn science-based concepts to effectively manage virus diseases in pumpkins.
Objectives: 1. Survey pumpkin and virus weed hosts in commercial pumpkin fields in Maryland and Delaware. 2. Survey and identify aphid vectors present in the region. 3. Develop a multistate IPM publication (web-based) to educate producers on management practices for virus diseases. Proposal Final Report |
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