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Area of Science:

  • Ecology
  • Agriculture
  • Entomology

Background:

  • Buckwheat (Fagopyrum esculentum) is a vital human food source, rich in nutrients.
  • Buckwheat crops attract numerous flower-visiting insects, crucial for pollination.

Purpose of the Study:

  • Characterize insect pollinator diversity and community structure in Nepalese buckwheat crops.
  • Assess the impact of insect pollination on buckwheat yield and economic value.
  • Investigate the influence of environmental factors on insect communities.

Main Methods:

  • Field surveys across two sites in Chitwan, Nepal.
  • Comparison of yields between open-pollinated and pollinator-excluded plots.
  • Statistical analyses including NMDS, PERMANOVA, SIMPER, and LMMs.

Main Results:

  • Significant differences in insect community composition were observed between sites, independent of temperature and humidity.
  • Open-pollinated plots yielded more buckwheat than pollinator-excluded plots.
  • Flies and solitary bees were frequent visitors, contributing significantly to pollination alongside managed bees.

Conclusions:

  • Insect pollination is essential for maximizing buckwheat yield and economic returns in Nepal.
  • A decline in pollinators poses a significant risk to buckwheat production, economic stability, and nutritional security.
  • Conservation of diverse insect pollinators is critical for sustainable agriculture and food security.