Utilization of organic fertilizer in response to mitigate CO2 emission

Abstract

Food security and sovereignty are strategic policy agenda of national security. Accelerating the growth of sustainable food production and improving the welfare of farmers through optimization of land resources are the priority. One way to increase food production and enhance soil quality is through the utilization of organic fertilizers such as livestock waste. In addition, it is expected to reduce CO2 emissions rather than leaving manure untreated. The purpose of this study was to determine the effect of solid manure and biourine application on increasing maize production and mitigate CO2 emission. This study was conducted in Inceptisols Rasau Jaya II, West Kalimantan. A randomized complete block design trial was established from plots fertilized with solid organic fertilizer (PO), biourine (BIO), solid organic fertilizer+biourine (PO+BIO), and control, with five replications. Parameters observed in this study were CO2 flux and agronomic performance of maize. CO2 emission was measured using the static chamber method, placing chambers on the surface of the soil and taking measurements using an infrared gas analyzer for 125 days. CO2 fluxes ranged from 59.93 to 106.07 Mg ha-1 yr-1 and there was no significant difference among the organic fertilizer treatments; nevertheless, the lowest CO2 flux was illustrated in PO+BIO. Maize productivity was influenced by the organic fertilizer and PO+BIO had the greatest maize yield.