Respon Pertumbuhan dan Produksi Tiga Varietas Bawang Merah (Allium ascalonicum L.) terhadap Pemberian Kompos Limbah Baglog Jamur Tiram pada Tanah Subsoil

Abstract

Shallots are a spice plant that consumers cannot avoid as a daily complementary spice and have high nutritional content. The increasing need for shallots is accompanied by limited topsoil availability, so it is necessary to use subsoil planting media, which is still widely available. To increase the carrying capacity of nutrient-poor subsoil soil, it is necessary to use superior varieties and utilize oyster mushroom baglog waste compost. This research aims to evaluate the effect of providing oyster mushroom baglog waste compost on the growth and production of three varieties of shallots in subsoil soil. This research was carried out on the land of the Center for Tuber Studies, Faculty of Agriculture, University of North Sumatra, Medan City, North Sumatra Province with an altitude of ± 25 meters above sea level from October 2023 to December 2023. The design used in this research was prepared in a Randomized Complete Block Design with 2 treatment factors with 3 replications. The first factor is the Shallot variety: the SS Sakato variety, the Batu Ijo variety, and the Maja Cipanas variety. The second factor is the provision of baglog oyster mushroom waste compost: 0, 10, 20, and 30 tons/ha. The results showed that the three shallot varieties were significantly different in plant lenght aged 1-7 WAP, number of leaves aged 1-2 and 3-7 WAP, bulb diameter, harvest age, fresh weight of bulbs per sample, fresh weight of shoots per sample, weight fresh roots per sample, root volume, selling dry weight of tubers per sample, as well as grading of tubers of quality 1 and 2. Providing oyster mushroom baglog waste compost significantly increased bulb diameter, fresh weight of tubers per sample, fresh weight of shoots per sample, selling dry weight of tubers per sample. samples, and quality tuber grading 2. The interaction between varieties and the provision of oyster mushroom baglog waste compost had a significant effect on tuber diameter.