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http://dx.doi.org/10.17137/korrae.2018.26.4.11

Application Effects of Biochar Derived from Pruned Stems of Pear Tree on Growth of Crops and Soil Physico-chemical Properties  

Jang, Jae-Eun (Gyeonggi-do Agricultural Research and Extension Services)
Lim, Gab-June (Gyeonggi-do Agricultural Research and Extension Services)
Park, Jung-Soo (Gyeonggi-do Agricultural Research and Extension Services)
Shim, Jae-Man (Gyeonggi-do Agricultural Research and Extension Services)
Kang, Chang-Sung (Gyeonggi-do Agricultural Research and Extension Services)
Hong, Sun-Seong (Gyeonggi-do Agricultural Research and Extension Services)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.26, no.4, 2018 , pp. 11-19 More about this Journal
Abstract
This study was conducted to develop the manufacturing method of biochar using pruned stems of pear tree and its application effect on the crop growth and soil physico-chemical properties. In this study, biochar derived from pruned stems of pear tree at heating temperature of $300^{\circ}C$, $500^{\circ}C$ and $700^{\circ}C$ in heating times of 2, 3 and 4 hours, were tested in the changes of their chemical properties during biochar processing. The pH, Exch. K, Exch. Mg and cation exchange capacity (CEC) increased as the pyrolysis temperature increased during the production of biochar, and the change of these properties rapidly occurred at $500^{\circ}C$. However, as the pyrolysis temperature increased, ash content increased and total carbon (T-C), yield decreased. And the change of the properties in response to the heating time was not shown. It was thought that it would be desirable to set the production conditions of biochar at $500^{\circ}C$ for 2 hours in consideration of the change of chemical properties and the ash content and yield. And also, were conducted the experiments to establish manufacturing method of farm-made biochar using drum biochar manufacturing machine and investigate the application effects of biochar on the cultivation of chinese cabbage and tomato. Application of biochar derived from pruned stems of pear tree could enhance pH, organic matter (OM), total carbon (T-C) of soil. On the other hand, soil electrical conductivity (EC), NO3-N were lowered compared to the control which has no application. The bulk density, porosity and aggregate formation of soil were improved by biochar application. The fresh matter yields of chinese cabbage and tomato were significantly increased in proportion to the application rate of biochar. This study demonstrated the effect of the biochar derived from agricultural byproduct to be as a low cost potential soil ameliorant by physico-chemical properties in eco-friendly greenhouse cultivation.
Keywords
Soil improvement; Biochar; Pruned stems of pear tree; Chinese cabbage; Tomato;
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