Lygus lineolaris Palisot de Beauvois (Hemiptera: Miridae) is the primary insect pest of strawberry in eastern and central North America. Strategies to minimize L. lineolaris colonization of strawberry at bloom and peak fruit susceptibility without impacting pollinator health must be developed. To this end, we examined the potential of alfalfa perimeter strips to reduce L. lineolaris populations in June-bearing strawberry fields. Over a three-year experiment, L. lineolaris densities and beneficial arthropod abundance were monitored in commercial strawberry fields with and without alfalfa perimeter strips. Alfalfa perimeter strips were found to concentrate L. lineolaris populations and led to a 36% reduction in L. lineolaris densities in adjacent strawberry plots compared to controls. When a protein immunomark-capture experiment was conducted to examine the extent of movement between the alfalfa strips and adjacent strawberry plots, it was determined that approximately three times as many L. lineolaris migrated from strawberry to alfalfa than vice versa. Moreover, adult females were overrepresented among immigrants to alfalfa, suggesting that alfalfa may be a preferred oviposition site for L. lineolaris. While the presence of alfalfa perimeter strips increased beneficial arthropod abundance and diversity in experimental plots overall, these increases were limited to the alfalfa itself, with little spillover into adjacent strawberry plots. These data suggest that preferential utilization of alfalfa by L. lineolaris underlies the observed population reductions and that alfalfa acts as a trap crop in June-bearing strawberries.

Lygus lineolaris Palisot de Beauvois（半翅目：Miridae）是北美东部和中部草莓的主要害虫。必须制定策略，在不影响传粉媒介健康的情况下，最大限度地减少线纹乳杆菌在开花时和果实易感性高峰期对草莓的定殖。为此，我们研究了苜蓿周边带减少六月草莓田中线状乳杆菌种群的潜力。经过三年的实验，在有或没有苜蓿周边带的商业草莓田中监测了线状乳杆菌的密度和有益节肢动物的丰度。研究发现，紫花苜蓿周边带可以集中 L. lineolaris 种群，并导致邻近草莓地块的 L. lineolaris 密度比对照减少 36%。当进行蛋白质免疫标记捕获实验来检查苜蓿条和邻近草莓地块之间的移动程度时，确定从草莓迁移到苜蓿的线状乳杆菌大约是反之亦然的三倍。此外，成年雌性在苜蓿的移民中所占比例过高，表明苜蓿可能是 L. lineolaris 的首选产卵地。虽然苜蓿周边带的存在总体上增加了实验地块中有益节肢动物的丰度和多样性，但这些增加仅限于苜蓿本身，几乎没有溢出到邻近的草莓地块。这些数据表明，L. lineolaris 对苜蓿的优先利用是观​​察到的种群数量减少的基础，并且苜蓿在六月结果的草莓中充当了陷阱作物。