International Journal of Advanced Engineering Research and Science (IJAERS) [Vol-4, Issue-10, Oct- 2017] https://dx.doi.org/10.22161/ijaers.4.10.1 ISSN: 2349-6495(P) | 2456-1908(O) www.ijaers.com Page | 1 Analysis of Extremely Low Frequency (ELF) Magnetic Field Effect to Oyster Mushroom Productivity Sudarti 1 , Ainur Rosyidah 2 , Zainur Rasyid Ridlo 3 , Singgih Bektiarso 4 , Tania Ardiani 5 , Sri Astutik 6 1,2,3,4,6 University of Jember, Jember, Indonesia 5 Airlangga University, Surabaya, Indonesia Abstract— Extremely Low Frequency magnetic field has frequency 0-300 Hz and included on non-ionizing radiation. The side effect of ELF magnetic field researched by many researcher on some sectors, such as on food sector and agriculture sector. In food sector, research of Sudarti (2016) shown that ELF magnetic field can use as alternative sterilization gado-gado food to decrease population of Salmonella. Oyster mushroom as alternative nutrition sources with many advantages for health, many people consume it and start cultivation it. ELF magnetic field can use as growth accelerator in agriculture sector, such as for oyster mushroom growth. This research aims to analyze of effect of ELF magnetic field to oyster mushroom productivity based on appearance of pin head and oyster mushroom wet weight. Result shown that exposure ELF magnetic field with intensity 500 μT in 50 minutes influence appearance of pin head with average amount 20,2 and influence oyster mushroom wet weight amount 212,2 grams. Keywords—ELF magnetic field, extremely low frequency, oyster mushroom I. INTRODUCTION Everyday we always exposure by ELF magnetic field. Some electronic instruments around us are source of ELF magnetic field. Extremely Low Frequency (ELF) magnetic field is sub-class of electromagnetic waves spectrum with frequency 0-300 Hz. Radiation of ELF magnetic field is non-ionizing radiation and using electric energy to biologist object. Magnetic field has characteristic that can’t blocked easily, able to penetrate on any material, no exception biologist materials. The capability of ELF magnetic field can penetrate biologist material, many researchers, researched about effect of ELF magnetic field on many sectors. Research result of Sudarti (2016) ELF magnetic field with intensity 646,7 μT in 30 minutes can use as alternative for sterilization of gado-gado food to decrease Salmonella bacteria [1]. In addition can decrease Salmonella bacteria population, ELF magnetic field can use as growth accelerator in plant. Research by Reza (2015) shown that exposure ELF magnetic field with intensity 300 μT in 60 minutes give positive effect on ranti tomato growth. In addition as growth accelerator plant [11], research by Mardhika (2017) shown that ELF magnetic field with intensity 600 μT in 70 minutes influence growth of Auricularia auricular [5]. In the study of Kristian et al. (2015) dose of ELF exposure of 500 μT resulted in an increase of pH of 1.00 at 24 hours after fermentation and a decrease in bacterial count at 72 hours after fermentation of tape [14]. Study of Handoko et al. (2017), shown that exposure ELF magnetic field with intensity 300 µT for 60 minutes and 90 minutes is capable of affecting to height of red chili plants and exposure ELF magnetic field with intensity 300 µT for 60 minutes is capable influencing to the number of red chili leaves [15]. Based on the last research, shown that ELF magnetic field has different effect with different intensity and exposure duration. Oyster mushroom, as alternative nutrition source, many people starting to consume oyster mushroom. People start to consume oyster mushroom, because oyster mushroom has some benefits and nutrition to prohibit high blood pressure disease and heart disease as mushroom consumption. In addition, consume oyster mushroom can recover from anemia, as tumor resistant, and prohibit iron deficiency [9]. Oyster mushroom known as mushroom which contain lovastatin as blood cholesterol inhibitor [7]. Many people starting to consume oyster mushroom, oyster mushroom requirement is so high, so many people start to cultivate it. People cultivated it in big scale or in small scale. But, they still cultivate oyster mushroom with traditional cultivation. So, they still can’t fill market requirement. So, researcher want to research about effect of ELF magnetic field which exposure to oyster mushroom.