Oilseed rape (OSR; Brassica napus L.) is a highly valued crop for food, feed and industrial use. It is primarily grown in temperate climates, and over recent decades, its area of production and profitability have increased. Concurrently, several diseases negatively impact OSR production. Diseases caused by soil-borne pathogens, pose a risk of substantial yield loss since crop rotation schemes have become narrow as the time lapse between OSR crops in a field has been shortened. The aims of this paper were to provide an overview of plant protection measures available for OSR production and to identify knowledge gaps and areas where more research is needed. This systematic map builds on a previously published protocol and follows the ROSES reporting standard. The search strategy was developed in collaboration with stakeholders and designed to cover available scientific evidence for OSR disease management in climate zones relevant for Scandinavian crop production (Dfc, Dfb, Cfb and Cfa in the Köppen-Geiger climate classification). Five scientific databases were used to identify peer-reviewed literature, complemented by additional searches performed in grey literature. Articles were screened at three stages: the title, abstract and full text. The eligible publications included studies of OSR crops, and all measures to control crop disease in agricultural fields were considered eligible interventions. The comparator was intervention and no intervention, and the yield per unit area, disease suppression or an increase in crop quality were determined to be outcomes of interventions. A basic assessment of the experimental design of each study was performed to assess its eligibility. All articles were coded based on the following categories: the location and climate zone, disease, pathogen, intervention and management method, outcome and study design. Articles not reporting original data but judged to be relevant (i.e., review papers, books and notes of registration of cultivars) were saved in a separate category called “books, reviews and reports”. A total of 4633 articles were collected through systematic searches. After duplicates were removed, 3513 articles were included in the screening process. After screening at the title and abstract levels, 897 articles were evaluated at the full text level, and 118 articles comprised the studies that met the eligibility criteria of the systematic map. The country (Canada) and region (Europe) with the largest OSR crop production areas also contributed the highest number of articles. In total, 17 different diseases were reported, with black leg (syn. Phoma stem canker) being the most studied disease. Nineteen different intervention methods or management types were examined. Cultivar resistance and pesticide application were the most studied control measures. We report scientific studies on plant disease protection measures for OSR based on field trials where the results are intended to be directly implemented in crop production management. The map clearly provides an overview of research progress throughout the time period chosen, and it identifies knowledge gaps regarding important diseases where only a few studies have been published, for example, diseases caused by viruses.

中文翻译：

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瑞典油菜（欧洲油菜）可持续植物病害保护策略的科学证据：系统地图

油菜（OSR；Brassica napus L.）是一种用于食品、饲料和工业用途的高价值作物。它主要生长在温带气候中，近几十年来，其生产面积和盈利能力有所增加。同时，一些疾病对 OSR 的产生产生负面影响。由于田间 OSR 作物之间的时间间隔缩短，作物轮作计划变得狭窄，因此由土壤传播的病原体引起的疾病构成了大幅减产的风险。本文的目的是概述可用于 OSR 生产的植物保护措施，并确定知识差距和需要更多研究的领域。该系统地图建立在先前发布的协议之上，并遵循 ROSES 报告标准。该搜索策略是与利益相关者合作开发的，旨在涵盖与斯堪的纳维亚作物生产相关的气候区（Köppen-Geiger 气候分类中的 Dfc、Dfb、Cfb 和 Cfa）中 OSR 疾病管理的可用科学证据。五个科学数据库被用来识别同行评审的文献，并辅以灰色文献中的额外搜索。文章分三个阶段筛选：标题、摘要和全文。符合条件的出版物包括对 OSR 作物的研究，所有控制农田作物病害的措施都被认为是符合条件的干预措施。比较对象是干预和不干预，单位面积产量、疾病抑制或作物质量提高被确定为干预的结果。对每项研究的实验设计进行了基本评估，以评估其合格性。所有文章均根据以下类别进行编码：位置和气候带、疾病、病原体、干预和管理方法、结果和研究设计。没有报告原始数据但被认为相关的文章（即评论论文、书籍和品种注册说明）被保存在一个单独的类别中，称为“书籍、评论和报告”。通过系统检索共收集到4633篇文章。删除重复项后，筛选过程包括 3513 篇文章。在标题和摘要级别筛选后，在全文级别评估了 897 篇文章，其中 118 篇文章包含符合系统图资格标准的研究。OSR作物产区最大的国家（加拿大）和地区（欧洲）也贡献了最多的文章。总共报告了 17 种不同的疾病，其中黑腿（同义词：Phoma stem canker）是研究最多的疾病。审查了 19 种不同的干预方法或管理类型。品种抗性和农药施用是研究最多的控制措施。我们报告了基于田间试验的 OSR 植物病害保护措施的科学研究，结果旨在直接在作物生产管理中实施。该地图清楚地概述了所选时间段内的研究进展，并确定了有关仅发表少数研究的重要疾病的知识差距，例如由病毒引起的疾病。