Organic fertilizers from animal production might contain undesirable components, such as veterinary medical product (VMP) residues, that are released into the environment during application. In addition to measures to reduce the use of VMPs through animal health measures, manure management could be an expedient strategy to prevent VMPs from entering the environment. The quantity applied is mainly determined by the nitrogen content. In addition, the depth of incorporation into the soil plays a major role in the environmental risk assessment of VMPs. The new regulations of the German fertilizer ordinance (DüV, 2020), which came into force at the beginning of 2020, as well as the changes that have not yet been fully implemented, will result in adjustments to the storage, application and incorporation practices for organic fertilizer. The aim of this study was to gain more information about the practice of storage, application and incorporation and the challenges for farmers in Germany. An online survey among farmers was conducted to determine the status quo. Almost all of the 125 participants kept livestock, predominantly cattle (68%) and pigs (33%). A third of participants (30%) needed a temporary storage site, for example at neighboring farms. Of the participants, 81% (n = 125) owned cropland and/or grassland. On cropland, manure was mostly incorporated at a depth of 3-15 cm, whereas on grassland, it was mostly applied superficially. On grassland lower-emission application techniques such as slot drill or injector procedures have so far rarely been used. The survey results provided important insights about storage, application and incorporation practices for organic fertilizers in Germany which could be used for the calculation of predicted environmental concentrations (PEC) as part of the environmental risk assessments of veterinary pharmaceuticals.

中文翻译：

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德国有机肥料储存、施用和掺入实践调查。

来自动物生产的有机肥料可能含有不良成分，例如在施用过程中释放到环境中的兽药 (VMP) 残留物。除了通过动物健康措施减少使用 VMP 的措施外，粪便管理可能是防止 VMP 进入环境的权宜之计。施用量主要由氮含量决定。此外，掺入土壤的深度在 VMP 的环境风险评估中起着重要作用。于 2020 年初生效的德国肥料法令（DüV，2020）的新规定以及尚未完全实施的变化将导致对肥料的储存、施用和掺入做法进行调整。有机肥。本研究的目的是获得更多关于德国农民面临的储存、应用和整合实践以及挑战的信息。对农民进行了在线调查以确定现状。几乎所有 125 名参与者都饲养牲畜，主要是牛 (68%) 和猪 (33%)。三分之一的参与者 (30%) 需要一个临时存储地点，例如在邻近的农场。在参与者中，81% (n = 125) 拥有农田和/或草地。在农田上，肥料主要在3-15厘米的深度掺入，而在草地上，主要是表面施用。迄今为止，在草地上很少使用低排放应用技术，例如槽钻或注入程序。调查结果提供了有关存储的重要见解，