Eleventh-Year Results of Fertilization, Herbaceous, and Woodv Plant Control in a Lobloll y 'Pine Plantation1

Mention of trade names is solely to identify materials used and does not imply endorsement by the U.S. Department of Agriculture. Discussion of herbicides in this paper does not constitute recommendation of their use or imply that uses discussed here are registered. Herbicides that are handled, applied, or disposed of improperly are a potential hazard to the applicator, off-site plants, and environment. Herbicides should be used only when needed and should be handled safely. Follow the directions, and heed all precautions on the container label. Manvillr Forest Products Corporation provided the study area, equipment, and personnel toward completion of this research which the authors gratefully acknowledge. ABSTRACT. Through I 1 years, fertilization at planting significantly increased the stemwood volume (outside bark) per loblolly pine (Pinus taeda L.) on a n intensively prepared moderately zuell-dmined fine sandy loam site i n northern Louisiana. Four years of herbaceou~r plant control significantly increased pine survival, and because herbaceous plant control increased s u n ~ i v a l , it resulted in a significant increase in total stand volume. Woody plant control no longer produced significant res u l t ~ by age I I . South. J . Appl. For. 14(4):173-177.