Pollination checklist tomato
collect pollen, and leave bite marks, but no fruit will grow. Bumblebees are active at temperatures between 8 and 32 degrees Celsius. Their optimum activity [...] level is at temperatures between 8 and 28 degrees Celsius. At temperatures between 28 and 32 degrees Celsius, their activity level gradually drops. At [...] the influence of viruses, plant diseases, pest infestations, insufficient or extreme growth, extreme climate conditions and the influence of chemicals on