Northern Research Station

Title: Release of 7-year-old underplanted white pine using hexazinone applied with a spot gun

Author: Wendel, G. W.; Kochenderfer, J. N.

Date: 1988

Source: Res. Pap. NE-614. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p

Station ID: RP-NE-614

Description: Hexazinone, Velpar-L?, applied at rates of 1 .O, 1.5, and 1.75 ml per spot, controlled competing hardwoods around 7-year-old underplanted white pine. Growth response was more pronounced when hexazinone was applied to release individual pines than when the entire area was treated on a 6 by 6- foot grid. In most cases, hexazinone killed white oak, chestnut oak, American beech, sourwood, red maple, and black gum. Yellow-poplar, red oak, cucumbertree, black cherry, sugar maple, sweet birch, and sassafras showed variable sensitivity to hexazinone. Three years after treatment, resprouting of killed stems and white pine mortality remain low.

Keywords: spot gun; herbicide; release; white pine

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Citation

Wendel, G. W.; Kochenderfer, J. N.  1988.  Release of 7-year-old underplanted white pine using hexazinone applied with a spot gun.   Res. Pap. NE-614. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.