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Title: Pinus Taeda L. response to fertilization, Herbaceous plant control, and woody plant control

Author: Tiarks, Allan E.; Haywood, James D.;

Date: 1986

Source: Forest Ecology and Management, 14 (1986) 103-112

Publication Series: Miscellaneous Publication

Description: On an intensively prepared site, a complete fertilizer applied at planting, and control of herbaceous and woody plants for the first 4 years, increased Pinus taeda L. volume at age 5 to 25.9 m3/ha compared to 11.8 m3/ha without the treatments. The fertilizer and competition control factors affected pine growth independently of each other, and so their effects are additive. Herbaceous plant control was the most effective treatment, increasing pine volume by 63%. Declining dry weights of herbaceous plant material indicated that pine was dominant by age 6, so more responses from herbaceous plant control are not expected. Woody plant control did not significantly increase pine volume until the fifth year because the intensive site preparation retarded the development of the woody competition. The fertilizer contained nitrogen, phosphorus, and potassium, but analysis of pine foliage indicates phosphorus was the element causing the response of pine to fertilizer. By the sixth season, the herbaceous and woody plant material contained 31% of the nitrogen and potassium applied as fertilizer. The competing material also contained 7% of the phosphorus applied in the fertilizer. This showed that competitors can be major utilizers of fertilizer applied to pines.

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Tiarks, Allan E.; Haywood, James D. 1986. Pinus Taeda L. response to fertilization, Herbaceous plant control, and woody plant control. Forest Ecology and Management, 14 (1986) 103-112

 


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