Herbicides and planting date affect early performance of container-grown and bare-root loblolly pine seedlings in Alabama |
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Authors: | David B South James P Barnett |
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Institution: | (1) Auburn University Southern Forest Nursery Management Cooperative, School of Forestry, Auburn University, 36849-4201, AL, USA;(2) USDA Forest Service, Southern Forest Experiment Station, 71360 Pineville, LA, USA |
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Abstract: | The survival of bare-root and container-grown loblolly pine (Pinus taeda L.) seedlings exceeded 90% when outplanted in March at two sites in Lee County, Alabama. At both sites, soil moisture and seedling survival were greater in March than in May. A March herbicide application reduced weed biomass by 75–80% at both sites. At the moist site, herbicide application did not affect survival. However, at the drier site, a reduction in weed biomass increased both the percent soil moisture and the survival of May-planted bare-root seedlings. When soil moisture at planting time was less than 13% on a dry weight basis container-grown seedlings survived better than bare-root seedlings. At both sites, reduced weed competition resulted in greater seedling heights and diameters.Alabama Experiment Station Journal Series No. 9-85802. |
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Keywords: | Pinus taeda L weed control sulfometuron-methyl soil moisture survival height diameter |
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