Development of Root Media Containing Pine Bark for Cultivation of Horticultural Crops

Eun Young Park; Jong Myung Choi

doi:10.7235/hort.2014.13018

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2014 Vol.32, Issue 4 Preview Page Next Page

Development of Root Media Containing Pine Bark for Cultivation of Horticultural Crops 소나무 수피를 포함한 원예작물 재배용 혼합상토의 개발

31 August 2014. pp. 499-506

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Abstract

This research was conducted to develop root media containing ground and aged pine bark (GAPB) and ground and raw pine bark (GRPB). After analysis of physico･chemical properties, the pine barks were blended with peat moss (PM) or coir dust (CD) in various ratios to formulate 12 root media. Then, two out of 12 root media were chosen based on the physical properties for further experiments. The pre-planting nutrient charge fertilizers (PNCF) were incorporated into two root media and chemical properties were analysed again. The total porosity (TP), container capacity (CC), and air-filled porosity (AFP) of GAPB were 78.7%. 39.4%, and 38.3%, respectively, while those of GRPB were 74.7%, 41.2%, and 33.4%, respectively. The percentage of easily available water (EAW, from CC to 4.90 kPa tension) and buffering water (BW, 4.91-9.81 kPa tension) in GAPB were 12.7% and 8.5%, respectively, which were a little lower than the 13.5% and 8.8% in GRPB. The pH and EC were not different significantly, but cation exchange capacity was different between the two pine barks (GAPB: pH 5.26, EC 0.61 dS･m-1, CEC 15.7 meq･100 g-1; GRPB: pH 5.19, EC 0.32 dS･m-1, CEC 9.32 meq･100 g-1). The concentrations of exchangeable cations in GAPB were Ca 0.32, K 0.05, Mg 0.27 and 0.12 cmol+･kg-1, whereas those in GRPB were Ca 0.28, K 0.08, Mg 0.25 and 0.09 cmol+･kg-1. The concentrations of PO4-P, NH4-N and NO3-N were 485.8, 0.62 and 0.91 mg･L-1 in GAPB and 578, 1.00 and 0.82 mg･L-1 in GRPB, respectively, when those were analyzed in the solution of the saturated paste. The TP, CC and AFP in the two selected media were 89.3 and 76.3, and 13.0% in PM+GAPB (8:2, v/v) and 88.2, 68.2 and 20.0% in CD+GRPB (8:2), respectively. The pHs and ECs were 3.8 and 0.24 dS･m-1 in PM+GAPB which were a little lower than 5.8 and 0.65 dS･m-1 in CD+GRPB. However, the pHs analysed before and after incorporation of PNCF in the two root media did not show large differences. This is because the solubility of dolomitic lime is very low, and the pHit is expected to rise gradually when crops are cultivated in the root media. The information obtained in this study should facilitate effective formulation of root media containing pine bark.

Keywords

air space

chemical properties

container capacity

nutrient contents

physical properties

국내에서 유통되고 있는 각종 분쇄부숙수피(GAPB)와 분쇄수피(GRPB)를 포함한 혼합상토를 개발하기 위해 본 연구를 수행하였다. 연구목적을 달성하기 위해 두 종류 수피의 물리･화학성을 분석한 후 피트모쓰(PM) 또는 코이어 더스트(CD)와 다양한 비율로 혼합하였다. 혼합물 중 물리성이 적합하다고 판단한 두 종류 상토의 pH 및 EC를 측정한 후 기비를 혼합하고 다시 화학성을 분석하였다. GAPB는 공극률 78.7%, 용기용수량 39.4%, 기상률 38.3%, 가비중 0.15g･cm-3, GRPB는 공극률 74.7%, 용기용수량 41.2%, 기상률 33.4%, 가비중 0.19g･cm-3로 측정되었다. 쉽게 이용할 수 있는 수분(EAW)과 완충수(BW)의 비율은 GAPB는 12.7% 및 8.5%, GRPB는 13.5% 및 8.8%로 각각 분석되었다. 화학적 특성에서 GAPB는 pH 5.26, EC 0.61dS･m-1, 양이온교환용량(CEC) 0.32cmol･kg-1, GRPB는 pH 5.19, EC 0.32dS･m-1, CEC 9.32 cmol･kg-1로 분석되었다. 치환성양이온 함량을 분석한 결과 GAPB는 Ca 0.32, K 0.05, Mg 0.27 및 Na 0.12cmol･kg-1, GRPB는 Ca 0.28, K 0.08, Mg 0.25 및 Na 0.09cmol･kg-1로 분석되었다. 질소 및 인산함량은 GAPB는 PO4-P 485.8, NO3-N 0.91, NH4-N 0.62mg･L-1, GRPB는 PO4-P 578, NO3-N 0.82, NH4-N 1.00mg･L-1로 분석되었다. PM + GAPB(8:2, v/v) 혼합상토의 공극률, 용기용수량, 기상률은 각각 89.3, 76.3 및 13.0%였지만 CD + GRPB(8:2)는 각각 88.2, 68.2 및 20.0%로 측정되었다. 혼합 후 측정한 pH와 EC는 PM + GAPB는 3.8 및 0.24dS･m-1로 CD + GRPB 혼합상토의 5.8 및 0.65dS･m-1보다 낮았다. 그러나 두 종류 상토에 기비를 혼합한 후 측정한 pH는 기비 혼합 전과 큰 차이를 보이지 않았는데, 이는 pH를 상승시키기 위해 혼합된 고토석회의 용해도가 낮은 것이 주요 원인이라고 판단하였다. 이상의 연구를 통해 도출된 결과는 추후 각종 수피를 이용한 혼합상토 개발에 유효하게 활용될 것이라고 생각한다.

키워드

기상률

화학성

용기용수량

무기물 함량

물리성

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Information

Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
Publisher(Ko) :한국원예학회
Journal Title :Horticultural Science and Technology
Journal Title(Ko) :원예과학기술지
Volume : 32
No :4
Pages :499-506
Received Date : 2013-01-23
Revised Date : 2013-04-10
Accepted Date : 2013-04-30
DOI :https://doi.org/10.7235/hort.2014.13018

Horticultural Science and Technology 원예과학기술지 ISSN:1226-8763(Print) 2465-8588(Online)

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