Abstract
During the operation of artificial pollination by means of routine method in mulberry trees, it is difficult to keep out another pollen-grains naturally pollinated. The operation usually practiced is troublesome and is not suitable under windy weather. We have succeeded to design the pollen-gun, a kind of pollinator and to cover up the weak points of usual operation above mentioned.
Results obtained from the field-experiments were as follows: 1) differences in fertilities of the seeds produced through both operations of pollination were not significant, 2) and we have succeeced to reduce the operation time of pollination by about one-half.
