Abstract Alternative strategies in plant protection are required due to political and environmental conditions. Basic substances can potentially benefit for modern plant protection in conventional and organic horticulture. In the case of plant protection in ornamentals, little is known about the effect of basic substances within the canopy to reduce foliar diseases. Podosphaera pannosa is one of the most severe diseases in the production of cut roses. In this study, different cultivars of cut roses were sprayed weekly with an extract of Equisetum arvense (4 g dried plant material/L), an aqueous solution of hydrogen peroxide (10 g/L) and a commercial plant protection product containing potassium hydrogen carbonate (VitiSan, Biofa GmbH, Münsingen, Germany) during two experimental trials. As a result, the symptoms of infected leaf area could be reduced significantly as the experiments progressed. Furthermore, no negative effects such as a reduction of plant growth or the number of marketable flowers were observed. The results indicate that the foliar application of the basic substances hydrogen peroxide and E. arvense-extract has the potential to reduce the use of synthetic plant protection products in conventional and organic horticulture.
展开▼
机译：摘要 由于政治和环境条件，需要采取替代的植物保护策略。在传统和有机园艺中，基本物质可以潜在地有益于现代植物保护。在观赏植物的植物保护方面，人们对冠层内基本物质减少叶面病害的作用知之甚少。Podosphaera pannosa 是切花玫瑰生产中最严重的疾病之一。在这项研究中，在两次实验试验中，每周向不同品种的切花玫瑰喷洒木贼提取物（4 g 干燥植物材料/L）、过氧化氢水溶液（10 g/L）和含有碳酸氢钾的商业植物保护产品（VitiSan，Biofa GmbH，Münsingen，Germany）。因此，随着实验的进行，感染叶面积的症状可以显着减少。此外，没有观察到诸如减少植物生长或可销售花朵数量等负面影响。结果表明，叶面喷施碱性物质过氧化氢和桫椤提取物具有减少合成植保产品在常规和有机园艺中的使用的潜力。
展开▼
