Pruning reduces blister rust in sugar pine with minimal effects on tree growth

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" Pruning reduces blister rust in sugar pine with minimal effects on tree growth "
O'Hara, Kevin L.; Grand, Lauren A; Whitcomb, Amy A

Document Type	:	AL
Record Number	:	944547
Doc. No	:	LA3n65j3m6
Language of Document	:	English
Main Entry	:	O'Hara, Kevin L.; Grand, Lauren A; Whitcomb, Amy A
Title & Author	:	Pruning reduces blister rust in sugar pine with minimal effects on tree growth [Article]\ O'Hara, Kevin L.; Grand, Lauren A; Whitcomb, Amy A
Title of Periodical	:	California Agriculture
Volume/ Issue Number	:	64/1
Date	:	2010
Abstract	:	Sugar pine trees from nine stands in two California study areas were assessed to determine the effects of pruning on the incidence and growth of white pine blister rust. Lower limbs up to 8 feet high were removed on alternate trees. Six years following treatment, the number of infections in pruned trees was reduced compared to unpruned trees at one study area, but no blister rust was found at the other area. The results suggest that artificial pruning of sugar pine may be part of an effective, integrated strategy to maintain this species in mixed-conifer California forests.