Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (137 KB bytes)

Title: Mulch and Hexazinone Herbicide Shorten the Time Longleaf Pine Seedlings are in the Grass Stage and Increase Height Growth

Author: Haywood, James D.;

Date: 2000

Source: New Forests, 19:, pp. 279-290

Publication Series: Miscellaneous Publication

Description: Herbaceous plant control with mulch or hexazinone herbicide influenced planted longleaf pine (Pinus palustris Mill.) seedling total height on a silt loam site in central Louisiana. The site had been sheared and windrowed in 1991, and rotary mowed before three treatments were established in a randomized complete block design: (1) untreated check: no herbaceous plant control after planting; (2) five mulches: on each plot, five randomly assigned mulches were placed around seedlings; the mulches were either a mat of cotton, hemlock and polyester, pine straw, woven polypropylene, or perforated polyethylene; and (3) hexazinone: the herbicide hexazinone at 1.12 kg active ingredient/ha was annually sprayed in the first two growing seasons over the rows of unshielded seedlings. The longleaf seedlings were planted in February 1993.

After three growing seasons, seedlings on the mulch and hexazinone treatments were taller than those on the check plots. About 59 percent of the mulched and hexazinone treated seedlings had grown out of the grass stage (at least 12 cm tall), compared to 17 percent of the check seedlings. After five growing seasons, the percentage of longleaf pine seedlings out of the grass stage was similar on all treatments and averaged 87 percent. However, these better growing pines were taller on the mulch and hexazinone treatments (a 142-cm average) than on the checks (78 cm). Pine straw was an ineffective mulch, probably because the straw smothered the seedlings. The longleaf saplings were tallest when the perforated polyethylene mat was used.

Keywords: Pinus palustris Mill, loblolly pine, P. taeda, plantation establishment, competition control, vegetation management

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Haywood, James D. 2000. Mulch and Hexazinone Herbicide Shorten the Time Longleaf Pine Seedlings are in the Grass Stage and Increase Height Growth. New Forests, 19:, pp. 279-290

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.