Grapevine Growth and Berry Development under the Agrivoltaic Solar Panels in the Vineyards

Soon Young Ahn; Dan Bi Lee; Hae In Lee; Zar Le Myint; Sang Yoon Min; Bo Myung Kim; Wook Oh; Jae Hak Jung; Hae Keun Yun

doi:10.12791/KSBEC.2022.31.4.356

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2022 Vol.31, Issue 4 Preview Page Next Page

Original Articles

Grapevine Growth and Berry Development under the Agrivoltaic Solar Panels in the Vineyards 영농형 태양광 시설 설치에 따른 포도나무 생육 및 과실 특성 변화 비교

31 October 2022. pp. 356-365

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Abstract

Agrivoltaic systems, also called solar sharing, stated from an idea that utilizes sunlight above the light saturation point of crops for power generation using solar panels. The agrivoltaic systems are expected to reduce the incident solar radiation, the consequent surface cooling effect, and evapotranspiration, and bring additional income to farms through solar power generation by combining crops with solar photovoltaics. In this study, to evaluate if agrivoltaic systems are suitable for viticulture, we investigated the microclimatic change, the growth of vines and the characteristics of grape grown under solar panels set by planting lines compared with ones in open vineyards. There was high reduction of wind speed during over-wintering season, and low soil temperature under solar panel compared to those in the open field. There was not significant difference in total carbohydrates and bud burst in bearing mother branches between plots. Despite high content of chlorophyll in vines grown under panels, there is no significant difference in shoot growth of vines, berry weight, cluster weight, total soluble solid content and acidity of berries, and anthocyanin content of berry skins in harvested grapes in vineyards under panels and open vineyards. It was observed that harvesting season was delayed by 7－10 days due to late skin coloration in grapes grown in vineyards under panels compared to ones grown in open vineyards. The results from this study would be used as data required in development of viticulture system under panel in the future and further study for evaluating the influence of agrivoltaic system on production of crops including grapes.

Keywords

agrivoltaic system

berry characteristics

grape development

viticulture

영농형 태양광 발전은 농경지에서 작물을 생산함과 동시에 식물이 요구하는 광포화점 이상의 광을 이용하여 전기를 생산하는 시스템이다. 새로운 농가 소득원의 개발을 위하여 포도원에 태양광 패널을 설치하고 수체의 생육과 과실 발육 특성을 평가하여 영농형 태양광의 활용성을 탐색하고 향후 재배기술을 개발하는 데 필요한 정보를 제공하고자 연구를 진행하였다. 152 × 68 × 3.5cm 크기의 구조물에 영농형 150Wp (36cell)모듈을 포도나무 재식열에 따라 배치하고, 과원의 환경과 식물생육을 분석하였다. 무처리에는 겨울철 풍속이 0.4－0.6m·s^-1에 도달하였으나, 시설 설치구에서는 0.01－0.02m·s^-1에 머물렀다. 삽수 수피의 탄수화물함량은 시설 설치구에서 183－184m·g^-1으로 무처리구(181－198mg·g^-1)에 비해 큰 차이가 없으며 삽수의 발아율도 큰 차이가 없었다. 잎의 엽록소의 함량은 처리구에서 높게 나타났다. 수확후 과실의 특성으로는 과립중, 과방중, 당도, 과피색의 차이는 없었다. 다만 시설구에서 숙기가 5－7일정도 늦어졌으며, 변색기의 착색에는 약간 차이가 있었다. 영농형 태양광 패널을 설치한 과원에서 포도나무와 과실의 발육은 유의차가 없었고, 설치구에서 착색이 지연되었다. 이러한 결과는 향후 포도원에서 영농형 태양광 시설을 설치하여 포도를 생산하는 기술 개발에 필요한 정보로 활용될 수 있을 것이다.

키워드

>과실 발육

과실 특성

영농형 태양광

포도 재배

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Information

Publisher :The Korean Society for Bio-Environment Control
Publisher(Ko) :(사)한국생물환경조절학회
Journal Title :Journal of Bio-Environment Control
Journal Title(Ko) :생물환경조절학회지
Volume : 31
No :4
Pages :356-365
Received Date : 2022-09-23
Revised Date : 2022-10-14
Accepted Date : 2022-10-17
DOI :https://doi.org/10.12791/KSBEC.2022.31.4.356

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

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