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Funded Project |
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Funding Program:
Integrated Pest Management Competitive Grants Program |
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Project Title:
Canopy modification for macadamia felted coccid management in macadamia nut orchards in Hawaii |
Project Directors (PDs):
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Lead State: HI Lead Organization: University of Hawaii at Manoa |
| Undesignated Funding: $27,282 |
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Start Date: Mar-01-2016 End Date: Feb-28-2017 |
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Pests Involved: Macadamia felted coccid |
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Site/Commodity: Hawaii/Macadamia nut |
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Summary:
Macadamia nut is an economically important crop in Hawaii, with an estimated value of $35.7 million. Macadamia felted coccid (Erriococcus ironsidei, Hemiptera, Eriococcidae, MFC) is a critically important pest in macadamia nut in Hawaii, and current options for control are costly and difficult to get effective coverage due to the canopy structure (large and overlapping) in many of the macadamia orchards. One integrated pest management strategy that could be implemented is canopy modification to reduce MFC populations, increase natural enemies, and increase effectiveness of insecticides with minimal effects on the crop production. We hypothesize that canopy manipulation will not only reduce MFC populations, and increase natural enemy populations, but will not affect yields or productivity of the orchard. We will utilize pruned and unpruned canopies at a commercial macadamia nut orchard on Hawaii Island. Our objectives are to 1) quantify the relationship of MFC infestation level to orchard canopy density; 2) quantify natural enemy impacts in different canopy habitats; 3) investigate the role of canopy modification and understory habitat on enhancing natural enemy effectiveness; and 4) investigate the effects of canopy modification on production and quality components of the orchard. The proposed project meets the Western IPM Center priority of improving the cost-benefit analysis when IPM practices are adopted, by looking at an integrated approach to managing MFC in Hawaiian macadamia orchards to improve effectiveness of insecticides and modification of pest habitat for MFC control.
Objectives: 1. Quantify relationship of MFC infestation level to orchard canopy density (anticipated impact: elucidate factors influencing severity of infestations of MFC); 2. Quantify natural enemy (Coccinellidae, Neuroptera and parasitoid Hymenoptera) impacts in different canopy habitats (anticipated impact: predict effectiveness of specific natural enemies under various environmental conditions); 3. Investigate the role of canopy modification and understory habitat in enhancing natural enemy effectiveness (anticipated impact: develop procedures for habitat management that enhance natural enemies and reduce MFC infestations). 4. Investigate the effects of canopy modification on production and quality components of the macadamia nut orchard (anticipated impact: estimate yields factors affecting yields under a manipulated canopy) |
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