A Note on the Bud Count Method of Forecasting Cone Crops of Douglas Fir

Finnis, J.M.

The Forestry Chronicle 29(2): 122-127


DOI: 10.5558/tfc29122-2
Accession: 068507909

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In 1941 G. S. Allen described a method of forecasting cone crops of certain coniferous species. In 1949 a small scale experiment was conducted, using the method on second growth Douglas fir. After a little practice it was found that the buds due to mature in the following year could be correctly identified in November. The ratio of the female/vegetative buds, known as "cone intensity" is a measure of the cone crop to be expected in the following year. Before cone maturity in the following year, there are many adverse factors which must be considered and which modify the forecast. The practical value of the forecast is reduced by the time taken to make the bud count and the many problems involved in obtaining an adequate and accurate sample.