Korean Journal of Soil Science and FertilizerISSN:0367-6315(Print) 2288-2162(Online)한국토양비료학회

The amount of livestock manure generated was 1,532 hundred tons/day as of 2019, and it increased by about 11% over 10 years. It has been raised as a cause of soil and water pollution due to the continuous overspray of livestock compost on farmland. It is essential to calculate an appropriate amount of livestock compost that can replace chemical fertilizers in order to manage local environment-friendly nutrients without problems caused by the use of livestock compost. In addition, food waste is mostly agricultural products-derived materials, and it is necessary to establish a comprehensive management system for agricultural cycle use. In this study, to confirm the compost mixed with livestock and food waste as an alternative to chemical fertilizer, comparison of the basic replacement of chemical fertilizer and livestock, the replacement of the mixed compost including food waste, the replacement of the total nitrogen amount of livestock compost, and the replacement of the total nitrogen amount of the mixed compost. Experiments were conducted to confirm the effect of each compost on crop production. Commercially available livestock compost (_L) and mixed compost (food waste and livestock) (_M) were used as the material for the experiment. Treatments were control, NPK, 5N_L, 5N_M, 7.5N_L, 7.5N_M, 9N_L, 9N_M. The comparison between livestock compost and mixed compost, mixed compost has 30% high crop productivity. The nitrogen use efficiency was shown as 7.5N_M > 5N_M > 5N_L > NPK > 7.5N_L > 9N_M > 9N_L. For high yield and nutrient uptake, fertilizer partial replacement (55.6% or 83.3% than total replacement) will be more efficient than 100% total nitrogen requirement replacement.

Rice yield index and nutrient use efficiency between different nitrogen application levels of livestock compost and mixed compost with food waste and livestock compost.