Film-wrapped cucumbers (Cucumis sativus L.) stored 14 or 21 days at 7°C plus 3 days at 21° had less weight loss than nonwrapped cucumbers but not less than waxed or wrapped/waxed cucumbers. Waxed cucumbers, however, had an increased incidence of decay 3 days after transfer to 21°, from a 14- and 21-day storage period at 7°. Wrapped cucumbers had a higher incidence of decay than nonwrapped cucumbers only after 21 days of storage at 7°. Dipping of cucumbers in imazalil (IM) reduced the incidence of decay during all storage periods. While wrapping cucumbers did not increase volatile production, waxing increased emanations of acetaldehyde, ethanol, and methanol, indicating anaerobic respiration. Chemical names used: l-[2-(2,4-dichlorophenyl)-2-(2-propenyloxy)ethyl]-1H-imidazole (imazalil).
`Thompson' pink grapefruit (Citrus paradisi Macf.), waxed or film-wrapped, treated with thiabendazole (TBZ) or untreated, were used to determine the effect of high-temperature conditioning at 31C for 3 days on fruit during subsequent storage for 4 weeks at 1 or 10C. Chilling injury (CI) developed in all conditioned fruit stored at 1C, but was drastically reduced in film-wrapped compared to waxed fruit. Thiabendazole slightly reduced CI, and fruit held at 10C had fewer CI symptoms than those held at 1C for 4 weeks. Conditioning Florida grapefruit at 31C for 3 days did not allow subsequent storage at 1C without rind discoloration. Chemical name used: 2-(4'-thiazolyl)-benzimidazole (thiabendazol, TBZ).
The Production of the cut flowers of Anthurium andreanum was in decline after Hurricane Gilbert in 1988 and the subsequent wide-spread problem of bacterial blight in Jamaica and the Caribbean. New methods of cultivation and new varieties were necessary for the development of the industry. In addition, with the destruction of coconut trees, the supply of commonly used coconut husk became difficult. The present work has focused on the development of alternative media to coconut husk and on the development of cultural and fertilizer practices that increase plant productivity and reduce incidence of disease. The variety Honduras was chosen for the study. A 3 × 3 latin square design was used to evaluate four media—coconut husk, brick chips, gravel, and basalt igneous rock—two methods of cultivation—pots and beds; at three levels of fertilizer—244, 448 and 896 kg N/ha per year. While the coconut husk was still the better medium, the other media have resulted only in about 15% decline in the marketable blooms. This was offset by the requirement for low maintenance and lower fertilizer rates in inorganic media compared to coconut husk. Pot culture proved to be better for management purposes as well as production for the same area of production, as density of the plants could be increased and the incidence of disease could be easily managed. These results will be discussed with emphasis on a simple cost–benefit analysis of various combinations of cultivation methods and practices for commercial cultivation of A. andreanum var. Honduras in the Caribbean.