Utilization of Bumblebee in Crop Pollination

Bumblebees play a vital role in pollination of plants due to their large size and hairiness hence are ideal for picking up and transferring pollen. They can vibrate (‘buzz’) flowers and have no communication system but can work efficiently in tunnels as they have a better sense of direction. They are 400 times more efficient than honeybees at any pollination chore and are capable of visiting 30 to 50 flowers per minute. They are non-swarming and less aggressive than honeybees. Bumblebee generally forages during the early morning (0530-0800h) and evening (1700-1900h) time. Bumblebees are better pollinators than honeybees in greenhouses and glass houses and they have a great potential to serve as supplemental pollinators in the cultivation of crops such as tomato, eggplant, cucumber, melon, strawberry, pumpkin, cherry, sweet pepper, etc. It improves the yield and quality parameters of the fruits. In India, efforts are being made at Solan to mass rear bumble bees and utilize them in pollination. A few private companies have attempted to introduce newer species of bumblebees in India. In the present era, the global population of bumblebees is declining due to injudicious use of pesticides, loss of natural colony and mechanization in agriculture and climatic effect.