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A brief history of disease epidemics in Queensland and of some economic outcomes

机译：昆士兰州疾病流行的简要历史以及一些经济成果

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摘要

Varietal composition and individual variety dominance within mill areas, regions and whole industries influences the outbreak of disease epidemics in Queensland. Disease epidemics that have affected part or the whole industry within the past 60 years are brown rust, eye spot, Fiji leaf gall, leaf scald, orange rust, Pachymetra root rot, smut and sugarcane mosaic. The rapid onset of orange rust in a cropping situation dominated by one variety resulted in the most widespread, severe disease occurrence and largest, single-year financial losses of any of the epidemics. There was a strong correlation with some of these diseases (brown rust, Fiji leaf gall, leaf scald, orange rust and Pachymetra root rot) between the percentage of an area planted to one variety and the occurrence of a major disease epidemic. Financial analyses are reported which consider the profitability of individual varieties within a district or region versus the relative costs incurred as a result of the disease epidemic (was it the right decision to allow that variety to dominate production). These analyses showed that the industry earned more from Q124 than would have been the case if a mix of other varieties had been grown prior to the year of the orange rust outbreak (2000).
机译：昆士兰州，工厂地区，整个行业内的品种组成和个体品种优势影响着疾病流行的爆发。在过去的60年中，影响部分或整个行业的疾病流行是棕锈，眼斑，斐济叶gall，叶锈，橙锈，厚皮草根腐烂，黑穗病和甘蔗花叶病。在以一种变种为主导的耕作情况下，橙色锈病的迅速发作导致任何流行病中最广泛，最严重的疾病发生和最大的单年度财务损失。与其中一种疾病（棕锈病，斐济叶gall虫，叶子烫伤，橙锈病和Pachymetra根腐病）之间的相关性与一个品种的种植面积百分比和主要疾病流行的发生之间具有很强的相关性。据报道，进行了财务分析，其中考虑了一个地区或地区中单个品种的获利能力，以及由于该病的流行而产生的相对成本（让该品种主导生产是正确的决定）。这些分析表明，与橙锈病爆发之年（2000年）之前种植其他品种的混合物相比，该行业从Q124获利更多。

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