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Forests 2012, 3(1), 22-32; doi:10.3390/f3010022
Article

Effects of Mechanical Site Preparation on Growth of Oaks Planted on Former Agricultural Fields

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Received: 16 November 2011; in revised form: 13 December 2011 / Accepted: 23 December 2011 / Published: 28 December 2011
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Abstract: Mechanical site preparation is frequently proposed to alleviate problematic soil conditions when afforesting retired agricultural fields. Without management of soil problems, any seedlings planted in these areas may exhibit poor growth and survival. While mechanical site preparation methods currently employed in hardwood afforestation are proven, there is a substantial void in research comparing subsoiling, bedding, and combination plowing treatments. A total of 4,320 bare-root Nuttall oak (Quercus texana Buckley), Shumard oak (Quercus shumardii Buckley), and swamp chestnut oak (Quercus michauxii Nutt.) seedlings were planted in February 2008 on three Mississippi sites. All sites were of comparable soils and received above average precipitation throughout the three-year duration of the study. Four site preparation treatments were replicated at each site, with 480 seedlings planted in each of nine replications, and a total of 1,440 seedlings per species planted across all sites. Mechanical treatments were installed using 3.1 m row centers, with treatments as follows: control, subsoiling, bedding, and combination plowing. Treatment effects on seedling height, groundline diameter (GLD), and survival were analyzed. Seedlings exhibited greater height in bedded and combination plowed areas (79.7 cm to 102.7 cm and 82.6 cm to 100.1 cm, respectively) compared to subsoiled or control areas (70.4 cm to 84.6 cm and 71.4 cm to 86.9 cm, respectively). Greater GLD was observed in bedded and combination plowed areas (11.9 mm to 18.4 mm and 12.2 mm to 18.3 mm, respectively) compared to subsoiled or control areas (10.2 mm to 14.6 mm and 10.5 mm to 15.6 mm, respectively). Survival was high for this study (94.%), and no differences were detected among treatments.
Keywords: mechanical site preparation; retired agricultural fields; oak afforestation mechanical site preparation; retired agricultural fields; oak afforestation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Self, A.; Ezell, A.W.; Rowe, D.; Schultz, E.B.; Hodges, J.D. Effects of Mechanical Site Preparation on Growth of Oaks Planted on Former Agricultural Fields. Forests 2012, 3, 22-32.

AMA Style

Self A, Ezell AW, Rowe D, Schultz EB, Hodges JD. Effects of Mechanical Site Preparation on Growth of Oaks Planted on Former Agricultural Fields. Forests. 2012; 3(1):22-32.

Chicago/Turabian Style

Self, Andrew; Ezell, Andrew W.; Rowe, Dennis; Schultz, Emily B.; Hodges, John D. 2012. "Effects of Mechanical Site Preparation on Growth of Oaks Planted on Former Agricultural Fields." Forests 3, no. 1: 22-32.


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