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首页> 外文期刊>Australasian Plant Pathology >Evaluation of the efficacy and economics of irrigation management, plant resistance and BrassicaspotTM models for management of white blister on Brassica crops.
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Evaluation of the efficacy and economics of irrigation management, plant resistance and BrassicaspotTM models for management of white blister on Brassica crops.

机译：评价灌溉管理的有效性和经济性，植物抗性和甘蓝型作物上的白色水疱管理中的 spot TM 模型。

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摘要

Options for the integrated management of white blister (caused by Albugo candida) of Brassica crops include the use of well timed overhead irrigation, resistant cultivars, programs of weekly fungicide sprays or strategic fungicide applications based on the disease risk prediction model, BrassicaspotTM. Initial systematic surveys of radish producers near Melbourne, Victoria, indicated that crops irrigated overhead in the morning (0800-1200 h) had a lower incidence of white blister than those irrigated overhead in the evening (2000-2400 h). A field trial was conducted from July to November 2008 on a broccoli crop located west of Melbourne to determine the efficacy and economics of different practices used for white blister control, modifying irrigation timing, growing a resistant cultivar and timing spray applications based on BrassicaspotTM. Growing the resistant cultivar, 'Tyson', instead of the susceptible cultivar, 'Ironman', reduced disease incidence on broccoli heads by 99%. Overhead irrigation at 0400 h instead of 2000 h reduced disease incidence by 58%. A weekly spray program or a spray regime based on either of two versions of the BrassicaspotTM model provided similar disease control and reduced disease incidence by 72 to 83%. However, use of the BrassicaspotTM models greatly reduced the number of sprays required for control from 14 to one or two. An economic analysis showed that growing the more resistant cultivar increased farm profit per ha by 12%, choosing morning irrigation by 3% and using the disease risk predictive models compared with weekly sprays by 15%. The disease risk predictive models were 4% more profitable than the unsprayed control.
机译：芸management属作物白水泡（由白化病菌引起）的综合管理的选择包括使用适时的架空灌溉，抗性品种，每周喷洒杀虫剂的程序或基于疾病风险预测模型的策略性杀真菌剂的应用，芸苔属点 TM 。最初对维多利亚州墨尔本附近的萝卜生产者进行的系统调查表明，早上（0800-1200小时）水边灌溉的农作物的白水泡发病率低于晚上（2000-2400小时）水边灌溉的农作物。 2008年7月至2008年11月，对位于墨尔本以西的西兰花作物进行了田间试验，以确定基于芸苔属植物 > spot TM 。种植抗性品种“ Tyson”而不是易感品种“ Ironman”，可将西兰花头上的疾病发生率降低99％。 0400 h而不是2000 h的高架灌溉使疾病发生率降低了58％。每周喷洒程序或基于两个版本的Brassica spot TM 模型之一的喷洒方案可提供相似的疾病控制，并将疾病发生率降低72％至83％。但是，使用Brassica spot TM 模型可以将控制所需的喷雾次数从14个减少到1个或2个。一项经济分析表明，种植更具抗药性的品种可使每公顷农场的利润增加12％，选择早上灌溉增加3％，并使用疾病风险预测模型，而每周喷洒则增加15％。疾病风险预测模型的收益比未喷洒的对照高4％。

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