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Third-Year Growth Response of Loblolly Pine to Eight Levels of Competition Control

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The growth response of young loblolly pine (Pinus taeda L.) to different amounts of competition control was studied in plantations of three ages in the Virginia Piedmont. Eight competition control treatments involved the removal of all, two-thirds, one-third, or none of the hardwood stems either with or without herbaceous weed control. Results after three growing seasons showed a significant increase in pine diameter and volume growth with competition control. Treatments combining woody and herbaceous control resulted in better pine growth than the same treatments without herbaceous control, in the two youngest stands. The best response, obtained with the two-thirds woody plus herbaceous control treatment, resulted in: a 100% increase in volume growth over the check plots in seedlings treated at the beginning of their second growing season in the field; a 93 % increase in one-year-old seedlings; and a 53% increase in the growth of seedlings treated before the third growing season. South. J. Appl. For. 11(2):91-95.
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Document Type: Journal Article

Affiliations: Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

Publication date: 01 May 1987

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