1,721,157 research outputs found
2/17/2022 - Choral and Orchestra with guest David Grogan
No full text2/17/2022 - Choral and Orchestra with guest David Groga
Integrated management of phytophthora diseases of durian: recommendations and benefit-cost analysis
Full text linkDurian is a favourite fruit throughout Southeast Asia. Increasing areas have been planted to durian orchards in recent years, especially in the Mekong Delta and southeastern provinces of Vietnam, in marginal areas of Thailand and in northern Australia. Durian growers face significant losses due to phytophthora diseases, and there is an urgent need for recommendations to control these diseases. Integrated disease management recommendations, based on an understanding of the biology of the pathogen, optimal growing conditions and soil health, promise sustainable durian production with minimal environmental impact. We have developed integrated orchard management recommendations based on an appreciation of the natural rainforest conditions in which durians co-evolved with the pathogen
Phytophthora diseases of durian, and durian-decline syndrome in northern Queensland, Australia
Full text linkDurian is the most popular fruit in Southeast Asia, with high economic and cultural value to the producing countries, which include Indonesia, Malaysia, Philippines, Thailand and Vietnam. The greatest threat to durian production in all countries is Phytophthora palmivora, which affects all stages of the cropping cycle. This chapter describes the diseases caused by P. palmivora, and their epidemiology. The chapter also describes a perplexing durian-decline syndrome which occurs in northern Queensland, where it appears that P. palmivora is operating in a complex with Pythium vexans and nematodes from the Xiphenema genus. Early control recommendations and their limitations are described, which leads to a discussion of integrated disease management principles and their applicability to the control of phytophthora diseases in durian
Durian propagation and nursery practice
Full text linkThis paper details nursery best practice procedures to ensure the supply of adequate quantities of vigorous, disease-free seedlings to the durian industry. Procedures adopted in Vietnam and Australia are compared and contrasted
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Screening for resistance to Phytophthora
Full text linkIdentifying and evaluating disease resistance depends on rapid, reliable and robust bioassays that can rapidly screen large numbers of genotypes and breeding progenies. We developed seedling, leaf and stem bioassays to screen durian germplasm from Thailand, Vietnam and Australia for resistance to Phytophthora palmivora. Detached leaf assays segregated durian cultivars into classes consistent with field observations, and are recommended as an early screen in breeding programs. Durian cultivar Chanee emerged as the least susceptible cultivar in Thai and Vietnamese tests
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