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Flowering and Nut Fruit Characteristics after Soil Amendment Treatments in Chestnut (Castanea crenata S. et Z.) Orchards  

Kim, Choonsig (Department of Forest Resources, Gyeongnam National University of Science and Technology)
Cho, Hyun-Seo (Department of Forest Resources, Gyeongnam National University of Science and Technology)
Lim, Jong-Taek (Gyeongsangnam-do Forest Environment Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.101, no.4, 2012 , pp. 567-573 More about this Journal
Abstract
This study was carried out to examine the effect of soil amendment treatments [(organic fertilizer: 20 kg $tree^{-1}$; compound fertilizer+wood-char fertilizer: 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 (no fertilizer)] on flowering and fruit characteristics in chestnut (Castanea crenata S. et Z.) orchards in Jinju and Sancheong, Gyeongsangnam-do. Diameter of fruiting shoot increased generally after soil amendment treatments compared with the control, while number of leaf, female and male flowers were not affected by the treatments. Nut weight increased after soil amendment treatments in Jinju, but was not affected by the treatments in Sancheong. There was a positive correlation between soil pH (r=0.91) or exchangeable $Ca^{2+}$ (r=0.99) and nut weight in Jinju and a positive correlation (r=0.97) between organic carbon content and soluble solid concentration, while a negative correlation (r=-0.92) between exchangeable $Mg^{2+}$ and soluble solid concentration of nuts in Jinju. However, the nut weight and soluble solid concentration in Sancheong were not correlated with soil properties. The results indicate that the characteristics of flowering and nuts in chestnut orchards depend on soil properties after soil amendment treatments between regions which show better responses on poor sites than on good sites.
Keywords
chestnut; fertilization; flowering; nut quality; wood-char;
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