Journal of Taiwan Agricultural Research

Author:Hsiang-I Lee, Shough-Peng Lee, Miao-Miao Hsu*, and Hui-Ling Lo

Abstract:

    Due to the government paying much attention to the solar energy issue and eager to combine with agricultural production, agrivoltaic systems gain much attention recently. The objective of this study was to evaluate growth of different vegetable species and cultivars that suitable for winter cultivation in a photovoltaic greenhouse with 40% coverage of solar panel on the roof. Results showed that cultivars of Pak-Choi (Brassica rapa ssp. chinensis var. communis) ‘Lü Guang No.1’ and ‘Oprah’ had the best yield and flavor among others. For non-heading Chinese cabbage (Brassica campestris L. spp), cultivars ‘Quan Zhou Bai Cai’, ‘Mi Xue Er’, ‘Cui Feng’, and ‘E Zi Bai Cai No.503’ performed the best. ‘Qing Long’, ‘All In’, and rape bred by Cheng Chi Seed Grower Company grew better within the tested cultivars of rape (Brassica rapa ssp. chinensis var. utilis). The yield of F₁ cultivars of Chinese kale (Brassica oleracea L. Alboglabra Group) ‘Yi Jia’ and ‘Lan Xing’ were significantly higher than others. Mustard (Brassica juncea Coss.) ‘Tainung No.3’ and ‘Qing He’ had the highest average weight and yield. Comparing vegetable species for the experiment, non-heading Chinese cabbage (Brassica campestris L. spp) obtained 70% of the 3-year average yield of that grown in normal condition and can be harvested in about 16 d after transplanting, shorter than other vegetable species with high multi-cropping index. As a result, it is the most adaptable vegetable of this study. The vegetable species without acceptable yield production could be further enhanced by improved cultural practices.

Key words:Photovoltaic greenhouse, Coverage, Vegetable cultivation, Cultivar selection

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