Flower visitors and pollinator interactions on mustard (Brassica juncea): yield increase potential of stingless bees (Tetragonula pagdeni) across field systems.
Layek U, Bhandari T, Karmakar P
Pollinators
If you grow mustard greens, arugula, or any brassica that you let go to seed, the small native bees visiting those yellow flowers between 8 and 10 in the morning are doing more yield work than anything else in your garden.
Researchers wanted to know which bees are best at pollinating mustard — the plant that gives us mustard oil and seeds — and whether keeping managed stingless bee hives nearby could boost harvests. They found that several native bee species, including small stingless bees, were highly effective pollinators, especially in the morning hours when the flowers produce the most nectar and pollen. When stingless bee hives were placed directly in open mustard fields (rather than inside cages or greenhouses), seed yields were the highest, suggesting a simple, practical way for farmers to grow more mustard with fewer chemical inputs.
Key Findings
Open-field stingless bee installation produced the highest seed yield at 1,311.66 kg/ha, compared to 856.23 kg/ha in netted fields and 901.86 kg/ha in greenhouse conditions.
Mustard flowers peaked in nectar and pollen availability between 8:00 and 12:00 h, coinciding with the highest abundance and diversity of flower visitors.
Five native bee species were identified as the most effective pollinators based on pollination service index values: Apis cerana, Apis florea, Ceratina binghami, Lasioglossum cavernifrons, and Tetragonula pagdeni.
chevron_right Technical Summary
Stingless bees (Tetragonula pagdeni) significantly boost brown mustard seed yields when installed directly in open fields, outperforming caged or greenhouse setups. The study maps which wild bees are the most effective mustard pollinators and shows that managed stingless bee hives can help offset pollinator decline in oilseed crops.
Abstract Preview
Pollinator-crop interactions are crucial for yield. Brown mustard is widely grown as an oilseed crop, yet declining pollinator populations can lead to pollination deficits and reduced yields. Altho...
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Brassica juncea, commonly mustard greens, brown mustard, Chinese mustard, Indian mustard, Japanese mustard, Korean green mustard, leaf mustard, Oriental mustard and vegetable mustard, is a species of mustard plant.