| dc.description.abstract | This research aims to study the effect of applying several ameliorants to post-fire lowland peatlands on the chemical properties and growth of corn plants (Zea mays L.). This research was conducted in the Screen House and Research and Technology Laboratory of the Faculty of Agriculture, University of North Sumatra in March 2023-July 2023. This study used a Non-Factorial Randomized Group Design (RAK) with 3 replications. actors consisted of 9 treatments, namely: (K) control. (Abl) 125 g boiler ash/plant, (Ab2) 250 g boiler ash/plant, (Bc1) 125 g fiber + shell biochar/plant, (Bc2) 250 g fiber + shell biochar/plant, (Kd1) 125 g dolomite lime/plant, (Kd2) 250 g dolomite lime/plant, (M21) 125 g zeolite mineral/plant, and (M=2) 250 g zeolite mineral/plant. Data were analyzed by Analysis of Variance (ANOVA) for each parameter measured and further tested for significant treatments using Duncan Multiple Range Test (DMRT) at the 5% level. Parameters observed were pH H2O, soil C-organic, soil N-total, exchangeable bases (Na-dd, K-dd, Ca-dd, Mg-dd), cation exchange capacity (CEC), base saturation (KB), plant height, stem diameter, plant leaf length, plant leaf width, crown dry weight, and root dry weight. The results showed that the application of ameliorants had an effect on increasing the chemical properties of post-fire lowland peat. The application of boiler ash was significant in increasing soil pH and Na-dd and decreasing soil CEC.The application of shell+fiber biochar was significant in increasing soil pH and CEC. Dolomite is best in increasing soil pH, zeolite is best in increasing CEC. Boiler ash 125 g is better in increasing plant growth, it can significantly increase plant height, stem diameter, leaf length, crown and root dry weight. | en_US |
