Recent reports indicate that global insect populations are drastically declining, and amongst insects, bees have attracted significant attention. Decades of research on causal factors for bee population declines, indicate that extensive loss of natural habitats resulting from urbanization and agricultural intensification, has led to a dearth of critical nesting and forage resources essential for the sustenance of bees. To address these concerns and to meet the growing need for food production, simple but effective farm management practices such as restoring habitat diversity through planting pollinator habitats along field margins and underutilized areas, revegetating retired farmland with wildflowers and including pollinator-friendly forbs in cover crop mixes, have been recommended. Earlier studies have provided evidence that planting pollinator habitats along field margins and revegetating retired farmland are indeed viable ways to sustain bee pollinators. Here we report results of a case study exploring the benefits of cover cropping with a pollinator-friendly forb mix. Our results indicate that cover cropping to support pollinators can be effective, particularly when cover crops are retained until the flowering stage and that grazing of cover crops could extend support to those genera of bees that prefer grazed areas. Although the reports on global insect declines are dire, our studies show that pollinator-friendly farm management practices can offset the declines and play a significant role in supporting pollinator populations. Regular assessment of the efficacy of these practices will enable us to target efforts towards better implementation of habitat conservation programs.
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3 November 2020
If You Build It, They Will Come—Agroecosystem-Based Management Practices Support Pollinators
Colton O'Brien,
H. S. Arathi
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Conservation Reserve Program (CRP)
Cover crop
native bees
pollinator