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Funded Project |
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Funding Program:
Regional IPM Grants (S-RIPM) |
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Project Title:
Integrated Management Of Colletotrichum And Phytophthora Crown Rot Of Strawberry In The Southeast |
Project Directors (PDs):
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Lead State: NC Lead Organization: NC State University |
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Cooperating State(s):
Virginia |
| Undesignated Funding: $169,851 |
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Start Date: Sep-01-2011 End Date: Aug-31-2013 |
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Summary:
This is a Joint Research-Extension project. Colletotrichum gloeosopsorioides and Phytophthora cactorum, causal agents of Anthracnose or Phytophthora crown rot, respectively, are among the most important pathogens identified by regional and national strawberry growers and other stakeholders. Both organisms can move with the planting stocks from the nursery to the fruiting field. In addition, P. cactorum can persist for long periods of time in soil due to the formation of resistant propagules. No single method to manage the crown rot diseases has proven effective in the industry. There is a stakeholder driven and identified need to develop and implement integrated management tools to limit crop losses due to these diseases. Components of an IPM program need to combine nursery and fruiting field protocols such as use of clean planting stock, soil and plant disinfestation, sensitive molecular diagnostic tools and utilization of acceptable level of host resistance in order to advance the sustainability of strawberry production in the Southeast. We propose to validate newly developed sampling and inspection protocols to minimize movement of non-symptomatic but infected planting stock movement from the nursery to the fruiting field. IPM tactics just prior to planting and or during crop growth will be evaluated in the fruiting field and advanced knowledge about the biology of the pathogens will help to minimize crop loss problems if infestation occurs. Chemical and cultural based tactics will be complimented with advances in host resistance through experiments that will detail inheritance of strawberry anthracnose crown rot resistance traits. With rapid changing practices in soil fumigation, and the persistent or recurrent problems encountered with strawberry crown rot diseases, research advances complimented with an effective extension and dissemination program throughout the southeast and beyond is critical to advance IPM protocols to reduce strawberry crop losses consistent with the National Road Map for IPM.
Objectives: Our overall goal is to advance the sustainability of strawberry production systems in the Southeast by development and extension of IPM programs. Specific Objectives in this proposal are to: OBJECTIVE 1: To develop and implement a multi-tactic program that includes, realtime PCR based detection, novel nursery sampling methods to ensure use of clean planting stocks, judicious use of novel fungicides and evaluation of host resistance studies to manage anthracnose crown rot; OBJECTIVE 2. To enhance fundamental knowledge of the crown rot pathogens and design integrated management tactics for efficacious control of Phytophthora crown rot; OBJECTIVE 3: To perform economic analysis of outcomes as a decision tool growers may utilize to assess risk and optimize IPM strategies and, OBJECTIVE 4. Development of Extension products for regional access, implementation of IPM-based recommendations in regional publications and agent and grower training in strawberry disease diagnosis and IPM. |
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