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Influence of herbicides and improvement cutting, fertilization, and prescribed fire on planted longleaf pine developmentAuthor(s): James D. Haywood
Source: Forest Science. 61(2): 363-369
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
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DescriptionThere is an interest in restoring longleaf pine (Pinus palustris Mill.) across its native range in the southeastern United States, and establishment of longleaf pine on much of its original range requires artificial regeneration and management of competing vegetation after planting. In Louisiana, two fertilization levels (No or Yes [36 kg/ha nitrogen and 40 kg/ha phosphorus]) in combination with three vegetation treatments (check, five prescribed fires [PFs], or multiyear vegetation control [IVM]) were applied to longleaf pine plantings established in a randomized complete block factorial design (α = 0.05). After 12 years, survival averaged 61% across the six-treatment combinations. Fertilization did not affect longleaf pine growth or stand production, and thus, native fertility was not limiting pine development. Longleaf pine bolewood production was significantly greater on IVM plots (165 m3/ha) than on check and PF plots (average of 113 m3/ha). In the 13th growing season, IVM plots had significantly less understory tree cover (51%) than checks (80%), but PF plots had the least tree cover (16%) and the most grass (5%) and forb (10%) cover. Fertilization significantly increased understory tree cover (58%) compared with that for unfertilized plots (40%), but woody vine cover was significantly less on fertilized plots (3%) than on unfertilized plots (6%).
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CitationHaywood, James D. 2015. Influence of herbicides and improvement cutting, fertilization, and prescribed fire on planted longleaf pine development. Forest Science. 61(2): 363-369.
Keywordsdiammonium phosphate, hexazinone, Pinus palustris Mill., triclopyr, understory cover, vegetation management
- Influence of herbicides and felling, fertilization, and prescribed fire on longleaf pine growth and understory vegetation through ten growing seasons and the outcome of an ensuing wildfire
- Influence of herbicides and felling, fertilization, and prescribed fire on longleaf pine establishment and growth through six growing seasons
- Effects of herbaceous and woody plant control on longleaf pine growth and understory plant cover
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