“…Central Java, the largest onion production center in Indonesia in 2021, production of onions reached 0.56 million tons, which decreased from 0.61 million tons in 2020 and was followed by East Java and West Nusa Tenggara. Several varieties of onions in Indonesia are Bima Brebes, Medan, Maja Cipanas, Keling, Ampenan, Sumenep, Kuning, Timor, and Lampung [2].…”