MITIGATION N2 O EMISSION THROUGH BEEF CATTLE WASTE FERTILISATION APPLICATION IN CORN FIELD

This study is aimed at explaining the pattern of N2O emission from the use of Cattle Manure Fertiliser (bio-slurry, bio-urine, and Trichocompost) on sweet corn (Zea mays L. Saccharata). This study used a Randomised Block Design (RBD) with four treatment groups and four replications. Each test consisted of 16 experimental units. The treatments consisted of combinations of Chemical Fertiliser (SP36, KCl, urea) and Organic Fertiliser (bio-urine and bio-slurry, Trichocompost), i.e., 100% Chemical Fertiliser (C100), 75% Chemical Fertiliser + 25% Organic Fertiliser (C75O25), 50% Chemical Fertiliser + 50% Organic Fertiliser (C50O50), and 25% Chemical Fertiliser + 75% Organic Fertiliser (C25O75). The observed variables were the pattern of N2O flux after the first and second fertilisation and the emission of N2O. The results showed that the highest N2O flux in the first fertilisation resulted from C75O25 treatment while in the second fertilisation, the highest N2O flux was emitted from C100 and the lowest was emitted from C25O75. The lowest N2O emission was from C25O75 treatment. In conclusion, using beef cattle waste fertiliser could decrease N2O flux and emissions by 75% in sweet corn cropping.