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首页> 外文期刊>Small Fruits Review >Oil application reduces white pine blister rust severity in black currants
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Oil application reduces white pine blister rust severity in black currants

机译：上油可降低黑加仑子中白松水泡生锈的严重程度

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摘要

White pine blister rust (Cronartium ribicola Fisch.), an economically important disease of five-needled white pines (Pinus L. section strobus), also infects leaves of black currants (Ribes nigrum L.) as an alternate host. Recommended rust control-procedures include eradication, prohibition, or restriction of planting or growing black currants in specific states. Chemical or cultural control techniques for cultivated Ribes have been neglected in rust management plans. The objective of this study wasto examine the effect of mineral oil spray on rust infection in seven susceptible cultivated black currant cultivars. Mineral oil at 8 ml/1 was sprayed until run-off at 0, 2-week, and 4-week intervals from August through October 2000, on these black currant cultivars growing in Corvallis, Oregon. Plants were visually rated for disease severity in mid-October. Mineral oil applications significantly reduced rust infection compared to the unsprayed control. The disease severity of three highly susceptiblecultivars treated every two weeks was significantly less than that of control plants. One of the three highly susceptible cultivars showed significant reduction in infection using the two-week interval spray program. The four more resistant cultivars did not show significant reduction in infection when compared to the control. Infection was significantly reduced in the most susceptible black currants. Foliar mineral oil application could reduce or eliminate rust on cultivated susceptible black currantsin regions where this infection is of concern.
机译：经济上重要的五针白松病（Pinus L. section strobus）病害是白松水泡锈病（Cronartium ribicola Fisch。），也感染了黑加仑子（Ribes nigrum L.）的叶子，成为替代宿主。建议的防锈措施包括根除，禁止或限制在特定州种植或种植黑加仑子。锈病管理计划中忽略了栽培核仁的化学或文化控制技术。这项研究的目的是检查矿物油喷洒对七个易感黑加仑栽培品种锈病感染的影响。在俄勒冈州科瓦利斯的这些黑加仑品种上，从2000年8月至2000年10月，以8 ml / 1的矿物油喷洒直至以0、2周和4周的间隔流失。在十月中旬对植物的疾病严重程度进行视觉评估。与未喷洒的对照组相比，矿物油的应用显着减少了锈病的感染。每两周处理的三个高度易感品种的病害严重程度显着低于对照植物。使用两周的间隔喷洒程序，三个高度易感品种之一显示出感染的明显减少。与对照相比，另外四个抗性品种没有显示出明显的感染减少。最易感染的黑加仑子的感染明显减少。叶面矿物油的应用可以减少或消除在这种感染引起关注的地区种植的易感黑加仑子上的铁锈。

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