lt has been our experience that collection of white pine cones at optimum ripeness gives maximum results in goal efficiency. ... While the trees are fairly short, 6 to 8 m (20 to 25 ft), with short branches, the easiest way to pick cones is to climb the trees. ... We still recommend placing a white pine seed orchard on a natural site because we expect to get more seed per dollar invested in a shorter time, evenanbsp;...
|Title||:||Recommendations for selection and management of seed orchards of western white pine|
|Author||:||Raymond J. Hoff, D. O. Coffen, Intermountain Forest and Range Experiment Station (Ogden, Utah)|