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A cyclone pollinator developed by the U.S. Forest Service was compared with a standard syringe pollinator currently used in many southern tree improvement programs. The average seed yields per cone were increased from 58 filled seed per cone with the syringe pollinator to 74 per cone with the cyclone pollinator. An increased quantity of pollen for each of the pollinators generally produced increased seed yields. The average seed efficiency from cyclone pollinations was 48 percent compared with 38 percent for syringe pollinations. In contrast, wind-pollinated control cones had 115 filled seed per cone and a seed efficiency of 75 percent.
Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.