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Cone Maturation and Seed Yield of Ocala Sand Pine

The serotinous nature of cones of the Ocala sand pine (Pinus clausa (Chapm. ex Englem.) Vasey ex Sarg. var. clausa) allows for their collection at any time of the year. For the development of Ocala sand pine seed orchards, better information was required on optimal collection dates. Data from the tests reported here indicate that to avoid lower seed yields and lower germination rates, collections should not begin before mid-October (depending on the order of clone ripening). Collections should be completed not more than about 3 months after maturation because seed yields per cone decrease with increasing time of exposure on trees. Tree Planters' Notes 41(2):22-26; 1990.


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Author(s): James P. Barnett, Frank A. Brandt

Publication: Tree Planters' Notes - Volume 41, Number 2 (1990)

Volume: 41

Number: 2