Effects of supplemental LED lighting and biofertilizer on yield and fruit quality of Japanese strawberry cultivars in Indonesia

Authors

Reginawanti Hindersah, Faculty of Agriculture, Universitas Padjadjaran Study Center of Land Resources Management System, Faculty of Agriculture, Universitas PadjadjaranFollow
Febby Fitriyani, Faculty of Agriculture, Universitas PadjadjaranFollow
Kenji Endo, Japan Premium VegetableFollow
Masakazu Nakayama, Japan International Research Center for Agricultural Science, JapanFollow

Abstract

Growing strawberries in soilless substrates in the greenhouse relies on fertilizers and supplemental light to boost yield and fruit quality. The research evaluated the properties of the biofertilizer and its effectiveness on the yield of Japanese strawberry cultivars Nanatsuboshi and KS-75 under controlled greenhouse conditions, with and without light-emitting diodes (LED) as supplemental light. The cell viability and plant-growth-promoting properties of a liquid consortium biofertilizer consisting of nitrogen-fixing bacteria and phosphate-solubilizing microbes, were characterized. Laboratory analysis confirmed the biofertilizer's composition, and a greenhouse experiment using a completely randomized design tested treatments of biofertilizer, LED, and their combination. The biofertilizer contained specific phytohormones and organic acids, with bacterial and fungal populations exceeding 107 and 105 CFU/mL, respectively. The 3-month greenhouse experiment showed that the biofertilizer, LED, and their combination reduced fruit number and weight in the strawberry cultivar Nanatsuboshi but increased them in KS-75. However, the total fruit weight of Nanatsuboshi was higher than that of KS-75 due to its larger size. The treatments did not increase the fruit total soluble solids (TSS). These findings indicate that KS-75 exhibited a stronger response to biofertilizer and LED treatments than Nanatsuboshi.

Recommended Citation

Hindersah, Reginawanti; Fitriyani, Febby; Endo, Kenji; and Nakayama, Masakazu (2025) "Effects of supplemental LED lighting and biofertilizer on yield and fruit quality of Japanese strawberry cultivars in Indonesia," Jurnal Kultivasi: Vol. 24: No. 3, Article 10.
Available at: https://journal.unpad.ac.id/kultivasi/vol24/iss3/10