Bumblebee colonies are being bred in three sizes, which depend on the number of workers:
- little colonies. . . . . . . . .50 - 60 workers
- middle-sized colonies..60 - 80 workers
- large colonies. . . . . . . .80 - 100 workers
Recommended colonies for areas of tomato crops:
- Little colonies. . . . . 500-1000 m²
- Middle colonies. . .1000-1500 m²
- Large colonies. . . .2000-2500 m²
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