Short-term Effects on Soil Property and Leaf Characteristics after Soil Amendment Treatments in Chestnut (Castanea crenata S. et Z.) Orchards
2012
Kim, C.S., Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Kim, W.S., Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | An, H.C., Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Cho, H.S., Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Choo, G.C., Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Lim, J.T., Gyeongsangnam-do Forest Environment Research Institute, Jinju, Republic of Korea
This study was conducted to evaluate short-term effects on soil properties and leaf characteristics after various treatments of soil amendments (organic fertilizer: 20 kg tree-¹; compound fertilizer+wood-char: compound fertilizer 4 kg tree-¹+wood-char 2 kg tree-¹; lime fertilizer: 3 kg tree-¹; mixed fertilizer: compound fertilizer 1 kg tree-¹+organic fertilizer 10 kg tree-¹+wood-char 1 kg tree-¹; control) in chestnut (Castanea crenata S. et Z.) orchards of Jinju and Sancheong, Gyeongsangnam-do. Soil bulk density, soil pH, soil organic carbon, total nitrogen, exchangeable Ca²+ and Mg²+ in chestnut orchards were not significantly affected by soil amendment treatments. However, leaf weight was significantly higher in the lime fertilizer (0.65 g leaf-¹) in Jinju and the organic fertilizer (0.68 g leaf-¹) in Sancheong than in the control treatments (Jinju: 0.46 g leaf-¹; Sancheong: 0.53 g leaf-¹). Leaf area was also significantly higher in the lime fertilizer (79.1 ㎠ leaf-¹) in Jinju and the soil amendments (70.4 ㎠ leaf-¹~78.2 ㎠ leaf-¹) in Sancheong than in the control treatments (Jinju: 56.2 ㎠ leaf-¹; Sancheong: 60.5 ㎠ leaf-¹). Nitrogen concentration of leaf increased significantly in the mixed fertilizer (2.51%) and the compound fertilizer+wood-char (2.50%) compared with the control (1.98%) treatments. The results suggest that soil properties were not affected by soil amendment treatments during short-term period, but leaf characteristics and nitrogen concentration can be an indicator of soil nutrient improvements in chestnut orchards.
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