2013 Annual Report
A total of thirty-one anthurium lines were placed into tissue culture with the following objectives: 21 selections for clonal multiplication and further observation prior to advance testing with cooperators on the island of Hawaii; 1 selection for germplasm storage, 2 accessions for germplasm storage, 2 UH-developed varieties and 5 named non-UH varieties for germplasm storage and triple-indexing. Two selections, orange UH1992 and red UH2237 were distributed to cooperators for advance testing, and 5 selections were dropped from field trials due to poor field performance for a total of 17 anthurium selections undergoing field testing. Twenty-three dendrobium crosses were germinated for cut flower or potted plant production, novel flower color (blue, peach and red) or germplasm improvement.
Indexing of ‘Ellison Onizuka’ anthurium was completed; to date, 6 commercial varieties and 28 University of Hawaii-released varieties have been triple indexed. Indexing of in vitro stock material ensures that propagules for field planting are disease-free. Seed pods of 7 previously released cut flower varieties and 5 potted plant were provided to the Orchid Growers of Hawaii to fulfill stakeholders’ needs for growing material.
The coffee berry borer (CBB) showed similar attraction for green or red color and the various designs of the traps. High capture was observed at traps located at 0.5 and 1.5 meters above the ground. Significant CBB capture was observed from March to May (flowering) and numbers were reduced during fruit development and harvest season. B. bassiana provided control with the highest dose and after the second application. Low and middle B. bassiana doses did not provide control for CBB with one or two applications. In the 2012 trials, the number of infested berries was significantly reduced on plants sprayed with Surround WP compared to control plants (no Surround WP applied). Surround WP reduced the CBB infestation by 28 to 79%, provided good application coverage was achieved. Good coverage is essential to protect the berries from the CBB attack, and therefore multiple applications may be required. Our results suggest kaolin clay has potential to be used as a barrier on coffee berries to reduce CBB attack. It may be used as an alternative tool in an integrated management against CBB and offer an alternative management for organic coffee growers as well, as long as applications are made appropriately. Combination of trapping (Feb-May), trap height at 0.5 meters, a high dose of B. bassiana and a good coverage of berries with Surround WP are recommended as components of an IPM program.