SOYBEAN PLANT GROWTH AND PRODUCTION RESPONSE (Glycine max (L.) Merril) TO THE APPLICATION OF LIQUID ORGANIC FERTILIZER (POC) APU – APU (Pistia stratiotes L.) PLANTS AND VARIOUS SOIL REFORMERS ON ULTISOL SOIL MEDIA

This study aims to determine the growth and production response of soybeans (Glycine max L. Merril) against the application of liquid organic fertilizer (LOF) Apu-Apu (Pistia stratriotes L.) plants on Ultisol soil media. To determine the growth and production response of soybeans (Glycine max L.) to the administration of various soil conditioners on Ultisol soil media. to determine the response of soybean growth and production (Glycine max L.) to the combination of liquid organic fertilizer (POC) Apu-Apu (Pistia stratriotes L.) plants and various soil conditioners on Ultisol soil media. This research was conducted in the experimental garden of the Faculty of Agriculture, University of Medan Area (UMA) located on Jalan Kolam No.1 Medan Area, Percut Sei Tuan District, with a height of 22 meters above sea level (masl), plain topography, Ultisol soil type and pH 4.94 carried out from September to December 2020. It uses a random block design with two factors. The first factor is the treatment of liquid organic fertilizer (POC) for Apu-Apu plants (without POC treatment, 25, 50, 75% POC / 1 liter of water) and the second factor is the treatment of various soil conditioners (without soil conditioner treatment, rice husk biochar, green manure for Mucuna bracteata leguminous plants, human hair waste 50g/polybag). The parameters observed were plant height (cm), number of branches (branches), flowering age (days), number of bunches per sample plant (bunches), number of bunches per plot (bunch), number of pods per sample plant (pod), number of pods per plot (pod), seed weight per plant sample (g), seed weight per plot (g weight), seeds 100 dry seeds (g). The results obtained from this study, namely: 1). The application of liquid organic fertilizer (LOF) apu - apu has a significant effect on the number of branches aged 6 WAP, the number of bunches per sample plant, the number of bunches per plot, the number of pods per sample plant, the number of pods per plot, the weight of seeds per plant sample, the weight of seeds per plot. and weigh 100 dry seeds. 2). The provision of various soil conditioners has a very significant effect, it cannot have an effect on the number of branches of plants aged 4 to 6 WAP, the number of bunches per sample plant, the number of bunches per plot, very different from the height of plants aged 4 to 6 WAP, the number of pods per sample plant, the number of pods per plot, the weight of seeds per sample plant, the weight of the seeds per plot and the weight of 100 dry seeds.