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— Blue oak (Quercus douglasii Hook & Arn) acorns were germinated and divided into three groups or stock types. The first group was directly sown in the field; the second was sown into containers and grown for 4 months before outplanting; and the third was grown for a year before outplanting. In addition, each of these groups was further divided into three radicle pruning treatments: i) radicles left intact; ii) 2-3 mm cut from radicle tip; and iii) radicles pruned back to 1 cm. Resultsdoi:10.1051/forest:19960242 fatcat:qbtyfaf7ejagxcrqxd27fmfy7m