Optimal Planting Density on Growth and Quality Characteristics of Kohlrabi in a Closed-type Plant Factory System

Chan-Il Uoon; Young-Yeol Cho

doi:10.12791/KSBEC.2019.28.2.104

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2019 Vol.28, Issue 2 Next Page

Optimal Planting Density on Growth and Quality Characteristics of Kohlrabi in a Closed-type Plant Factory System 완전제어형 식물공장에서 콜라비의 생육과 품질에 대한 적정 재식밀도

30 April 2019. pp. 104-109

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Abstract

The crops recommended for the plant factory system are diverse. The importance of planting density in the plant factory is being recognized. The objective of this study was to determine the optimal planting density for growth and quality of kohlrabi in a closed-type plant factory system. The kohlrabi was grown under fluorescent lamps and nutrient film technique system. The growth and quality of kohlrabi were investigated under four different planting densities (22 plants/m²(15 × 30 cm), 27 plants/m²(15 × 25cm), and 33 plants/m²(15 × 20cm)). There were no significant interactions between Shoot fresh and dry weights per plant or bulb stem fresh and dry weights per plant and planting density. Shoot fresh and dry weight per area or bulb stem fresh and dry weight per area were the highest at 33 plants/m². There were no significant interactions between plant height, leaf area, photosynthetic rate, hardness, and chlorophyll content and planting density. Significant differences in Bulb stem height and diameter, and brix were observed. Bulb stem height and diameter and brix of kohlrabi were the highest at 22 plants/m². Based on our results, we conclude that the optimal planting density is 33 plants/m² for growth of kohlrabi, however, the optimal planting density is 22 plants/m² for quality of kohlrabi in a closed-type plant factory system.

Keywords

Brassica oleracea

bulb stem diameter

fluorescent lamps

shoot dry weight

shoot fresh weight

식물공장에 재배 가능한 작물은 매우 다양할 것으로 본다. 식물공장에서 재식밀도에 대한 중요성이 인식되고 있다. 본 연구는 완전제어형 식물공장에서 콜라비의 재배에 적합한 재식밀도를 구명하기 위하여 수행되었다. 식물공장 형태는 형광등을 이용한 완전제어형태로, 박막수경재배를 이용하여 재배하였다. 재식밀도는 22plants/m²(15×30cm), 27 plants/m²(15×25cm), 그리고 33 plants/m²(15×20cm)로 처리 하였다. 식물체당 지상부 생체중과 건물중 또는 식물체당 벌브의 지상부 생체중와 건물중에는 재식밀도간 유의적 인 차이를 보이지 않았다. 단위면적당 지상부 생체중과 건물중 또는 단위면적당 벌브의 지상부 생체중과 건물중 에는 재식밀도가 높은 처리구(33plants/m²)에서 높게 나 타났다. 재식밀도와 초장, 엽면적, 광합성, 경도 및 엽록 소간에는 유의적인 차이를 보이지 않았다. 재식밀도와 벌브 높이와 지름 및 당도간에는 유의적인 차이를 보였 다. 재식밀도가 낮은 22plants/m² 처리구에서 가장 높은 벌브 높이와 지름을 보였으며, 당도 또한 높았다. 이상 의 결과를 바탕으로 결론을 내리면, 경제성을 고려한 생 육적인 측면에서는 단위면적당 생산량이 많은 재식밀도 33plants/m² (15×20cm)가 적정하였으나, 당도와 같은 품 질적인 측면에서는 재식밀도 22plants/m² (15×30cm)가 적정하였다.

키워드

Brassica oleracea

벌브 지름

형광등

지 상부 건물중

지상부 생체중

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Information

Publisher :The Korean Society for Bio-Environment Control
Publisher(Ko) :(사)한국생물환경조절학회
Journal Title :Protected Horticulture and Plant Factory
Journal Title(Ko) :시설원예ㆍ식물공장
Volume : 28
No :2
Pages :104-109
Received Date : 2019-01-09
Revised Date : 2019-02-08
Accepted Date : 2019-02-25
DOI :https://doi.org/10.12791/KSBEC.2019.28.2.104

Journal of Bio-Environment Control ISSN:1229-4675(Print) 2765-3641(Online) 생물환경조절학회지

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