White Oak and Northern Red Oak Leaf Injury from Exposure to Chloroacetanilide Herbicides
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منابع مشابه
Acorn Fall and Weeviling in a Northern Red Oak
In 2000, we determined levels of damage by acorn weevils (Curculio spp.) and patterns of acorn fall in a northern red oak (Quercus rubra L.) seedling orchard in eastern Tennessee. The mean (ISE) production of acorns among 43 selected trees was 5,930 rt 586 acorns per tree with a maximum production level of 16,969 acorns for one tree. Trees were selected in the spring of 2000 based on abundance ...
متن کاملDendrochronological parameters of northern red oak (Quercus rubra L. (Fagaceae)) infested with red oak borer (Enaphalodes rufulus (Haldeman) (Coleoptera: Cerambycidae))
Oak-dominated forests in northwestern Arkansas have recently experienced an oak mortality event associated with an unprecedented outbreak of a native insect, the red oak borer, Enaphalodes rufulus (Haldeman). To determine whether prior drought was associated with increased E. rufulus infestation level of Quercus rubra L. trees, we employed a suite of dendrochronological measurements from Q. rub...
متن کاملDo chestnut, northern red, and white oak germinant seedlings respond similarly to light treatments? II. Gas exchange and chlorophyll responses
Understanding differences in physiological and growth strategies in low-light environments among upland oak species may help managers address the challenges of oaks’ poor regeneration. Gas exchange and chlorophyll content were measured for northern red oak (Quercus rubra L.), chestnut oak (Quercus prinus L.), and white oak (Quercus alba L.) germinants grown at 25%, 18%, and 6% of full sun in on...
متن کاملDo chestnut, northern red, and white oak germinant seedlings respond similarly to light treatments? Growth and biomass
Northern red oak (Quercus rubra L.) seedling growth has been extensively studied. White oak (Quercus alba L.) and chestnut oak (Quercus prinus L.), however, are far less investigated despite their importance among upland oak species in eastern North American forests. We characterized white and chestnut oak seedling response to light and available soil nutrients while using northern red oak as a...
متن کاملCarbon partitioning and allocation in northern red oak seedlings and mature trees in response to ozone.
Northern red oak (Quercus rubra L.) seedlings and trees differ in their response to ozone. Previous work reported reductions in net photosynthesis, carboxylation efficiency and quantum yield of mature tree leaves, whereas seedling processes were unaffected by the same ozone exposure. To further characterize differences in ozone response between seedlings and mature trees, we examined carbon par...
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ژورنال
عنوان ژورنال: HortScience
سال: 2010
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.45.4.696