A present goal of the Conservation Reserve Program (CRP) is to manage land in agricultural landscapes to increase pollinator abundance and diversity. CP42, or the pollinator seed mix, is planted and managed to support foraging pollinators with blooming flowers present at all points in the foraging season. This high-quality habitat provides an excellent opportunity to study honey bee nutrition and determine whether honey bees located near CRP sites use known resources included in planting seed mixes. This study aims to highlight the primary sources of honey bee forage in the northern Midwest as well as to assess honey bee utilization of the floral resources provided by the pollinator seed mix used for CRP plantings. We received pollen samples collected using pollen traps by beekeepers in Ohio, South Dakota, Indiana, Illinois, and Michigan. Metabarcoding methods were used to identify and quantify pollen collected at different points in the season. The results indicate that honey bees frequently used major mass flowering resources such as Glycine, Trifolium, and Symphiotrichum throughout the season. In addition, flowers included in the CRP pollinator seed mix were used modestly. These results have implications for pollinator seed mix design.

中文翻译：

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保护储备计划（CRP）授粉植物和支持蜜蜂的中西部上部农业景观中的花朵。

保护储备计划（CRP）的当前目标是管理农业景观中的土地，以增加授粉媒介的数量和多样性。CP42或传粉媒介混合种植，并在觅食季节的所有时间点都盛开着花朵的传粉媒介得到支持。这种高质量的栖息地为研究蜜蜂营养和确定位于CRP地点附近的蜜蜂是否使用种植种子混合物中包含的已知资源提供了极好的机会。这项研究旨在突出中西部北部蜜蜂觅食的主要来源，并评估蜜蜂对CRP种植用的传粉媒介混合所提供的花卉资源的利用率。我们收到了俄亥俄州，南达科他州，印第安纳州，伊利诺伊州和密歇根州的养蜂人使用花粉陷阱收集的花粉样本。使用元条形码方法来识别和量化在季节不同点收集的花粉。结果表明，蜜蜂经常使用主要的大量开花资源，例如整个季节都有甘氨酸，白三叶和Symphiotrichum。此外，适度使用了CRP传粉者种子混合物中所含的花。这些结果对传粉媒介混合设计具有启示意义。