http://hdl.handle.net/10125/877 Thu, 20 Jun 2013 12:31:16 GMT 2013-06-20T12:31:16Z http://hdl.handle.net/10125/9466 Thesis (Ph. D.)--University of Hawaii at Manoa, 1996.; Includes bibliographical references (leaves 103-104).; Microfiche.; xi, 104 leaves, bound photos. (some col.) 29 cm Mon, 01 Jan 1996 00:00:00 GMT http://hdl.handle.net/10125/9466 1996-01-01T00:00:00Z Yu, Ming-qiu http://hdl.handle.net/10125/9465 Thesis (Ph. D.)--University of Hawaii at Manoa, 1996.; Includes bibliographical references (leaves 81-86).; Microfiche.; xi, 86 leaves, bound ill. 29 cm Mon, 01 Jan 1996 00:00:00 GMT http://hdl.handle.net/10125/9465 1996-01-01T00:00:00Z Shigaki, Toshiro http://hdl.handle.net/10125/9464 Thesis (Ph. D.)--University of Hawaii at Manoa, 1995.; Includes bibliographical references (leaves 109-111).; Microfiche.; ix, 113 leaves, bound ill. 29 cm Sun, 01 Jan 1995 00:00:00 GMT http://hdl.handle.net/10125/9464 1995-01-01T00:00:00Z Jee, Hyeong Jin http://hdl.handle.net/10125/9463 Thesis (Ph. D.)--University of Hawaii at Manoa, 1995.; Includes bibliographical references (leaves 95-107).; Microfiche.; x, 107 leaves, bound ill. (some col.) 29 cm Sun, 01 Jan 1995 00:00:00 GMT http://hdl.handle.net/10125/9463 1995-01-01T00:00:00Z Rehman, Faiz-Ur http://hdl.handle.net/10125/9462 Thesis (Ph. D.)--University of Hawaii at Manoa, 1992.; Includes bibliographical references (leaves 84-93); Microfiche.; x, 93 leaves, bound ill. (some col.) 29 cm Wed, 01 Jan 1992 00:00:00 GMT http://hdl.handle.net/10125/9462 1992-01-01T00:00:00Z Borth, Wayne B http://hdl.handle.net/10125/9461 Thesis (Ph. D.)--University of Hawaii at Manoa, 1991.; Includes bibliographical references (leaves 94-102); Microfiche.; x, 102 leaves, bound ill. (some col.) 29 cm Tue, 01 Jan 1991 00:00:00 GMT http://hdl.handle.net/10125/9461 1991-01-01T00:00:00Z McElhaney, Rosemarie http://hdl.handle.net/10125/9460 Typescript.; Thesis (Ph. D.)--University of Hawaii at Manoa, 1990.; Includes bibliographical references (leaves 110-115); Microfiche.; xiv, 115 leaves, bound ill. (some col.) 29 cm Mon, 01 Jan 1990 00:00:00 GMT http://hdl.handle.net/10125/9460 1990-01-01T00:00:00Z Chang, Tun-tschu http://hdl.handle.net/10125/9459 Typescript.; Thesis (Ph. D.)--University of Hawaii at Manoa, 1989.; Includes bibliographical references (leaves 98-109); Microfiche.; xi, 109 leaves, bound ill. 29 cm Sun, 01 Jan 1989 00:00:00 GMT http://hdl.handle.net/10125/9459 1989-01-01T00:00:00Z Gunasinghe, Ukkubandage http://hdl.handle.net/10125/9458 Typescript.; Thesis (Ph. D.)--University of Hawaii at Manoa, 1984.; Bibliography: leaves [82]-88.; Photocopy.; Microfilm.; viii, 88 leaves, bound ill. 29 cm Sun, 01 Jan 1984 00:00:00 GMT http://hdl.handle.net/10125/9458 1984-01-01T00:00:00Z Uchida, Janice Y http://hdl.handle.net/10125/993 Experiments were conducted in the greenhouse, field and growth chambers to evaluate effects of soil type, soil moisture regimes, and porosity on selected aspects of the dynamics of the Kona coffee root-knot nematode, Meloidogyne konaensis. First, the reproduction and damage potential of M. konaensis on resistant and susceptible rootstocks of coffee in four soils under two moisture regimes representative of areas where coffee is grown in Hawaii were assessed in greenhouse experiments. M. konaensis suppressed growth of coffee in all four soils. Nematode reproduction occurred readily in all soil types. Reproduction was lowest in the Hydric Dystrandept soil where the nematode holotype was found. In contrast, root galling was greatest in this soil. Greater galling occurred under constant moisture (33kPa) than under fluctuating moisture conditions in this soil. A field experiment in Kainaliu, Hawaii was conducted to determine the influence of irrigation, plant age, cultivar and nematode on coffee growth and yield. The population densities of the nematode in the soil varied according to plant age and irrigation treatment. Soil populations under irrigated conditions were greater during the months of May to July which normally follows the greatest annual precipitation and a period of active plant growth. Nematode reproduction was greater on coffee transplanted as 6-month-old seedlings than on coffee transplanted at 12- month ofage. Soil water tension varied by season and experimental treatment. Trees from 12-month-old transplants exhibited greater water tension fluctuation with greatest water tension occurring from January to April. Trees transplanted as 6-month-old seedlings into M. konaensis infested soil and irrigated yielded greater coffee fruit than the same aged trees treatment without irrigation. Crop loss and reduction of growth and yield were also more evident from 6-month-old seedlings without supplemental irrigation treatment. In contrast, yield from plots in treatments including irrigation, nematode and 12-month-old transplants yielded poorly. Overall highest yields were obtained from trees free of nematode and with supplemental irrigation. Yield reductions from nematode-infected plants ranged from 30-60% which is economically significant. Penetration, development and reproduction of M. Iwnaensis was determined on tomato as model plant at 0.77 and 0.65 porosity. The rate of root penetration and post-embryonic developmental rates occurred slightly faster the porosity treatment of 0.77 than in the more densely packed soil (porosity of 0.65). Development in the 0.65 porosity progressed slower than at 0.77. Even though the nematodes matured faster and began laying eggs sooner on plants growing at porosity of 0.77, much greater numbers of eggs were laid by 30 days after inoculation at the 0.65 porosity treatment than those at the 0.77 porosity. The finding from this research illustrates the primary role of the Kona coffee root-knot nematode in the Coffee Decline. The soil environment and host suitability are conducive factors for the coffee decline disease. Proper soil moisture management combined with sources of genetic resistance could minimize the damage enabling the coffee industry to remain profitable. Thu, 01 May 2003 00:00:00 GMT http://hdl.handle.net/10125/993 2003-05-01T00:00:00Z Serracin, Mario