Abstract
Nitrification is the oxidation process of NH4+ to NO3- microbially. The nitrification process can produce compounds in the form of NO3-, N2O, or NO which can cause environmental pollution through water, soil, or air, thus harming living things. The research was conducted to find ways to inhibit or control nitrification effectively and sustainably. The experiment was carried out in a plastic greenhouse located in Plesungan, Karanganyar until the maximum vegetative planting period of corn around May-June using a completely randomized design three replications. Andisols soil media was taken from Tegalrejo Village, Tengaran District, Semarang Regency 07º25'28.3 '' LS and 110º31 '35.7 '' BT with an altitude of 760 meters above sea level. There are 5 treatments, one control, four are natural inhibitor treatments in the form of litter addition. The litter used was Gliricidia maculate, Albizzia falcataria, Senna siamea, and Tithonia diversifolia. Statistical analysis showed that treatment just significantly affect NO2- concentrations (potential nitrification), not significantly affect NH4+, NO3- concentrations, and efficiency utilization of N. However, measurement results in the laboratory and field showed that the addition of local litter could inhibit nitrification, which was demonstrated through the efficiency of N utilization. Tithonia diversifolia because it has the highest average N utilization efficiency of 25.79%, 58.71% more efficient than control treatments. Also followed by plant growth results showed that the root’s dry weight and canopy’s dry weight positively correlated with NH4+ concentrations and efficient utilization of N, also canopy’s dry weight negatively correlated with NO2- concentrations (potential nitrification). The highest results occurred in the Tithonia diversifolia treatment.
Highlights
Nitrogen fertilizer is the most widely used fertilizer (300-350 kg/ha) in corn plants
This study examines the effect of adding local litter to the dynamics of ammonium, nitrate, and nitrification potential as supporting factors in determining the level of efficiency of N utilization by corn plants to vegetative times, taking into account the nature of the Andisols
This happened because the litter dose is given was not high enough, so that the statistical analysis did not significantly affect the main parameters in the form of NH4+, NO2, NO3, and NH4+/N-mineral
Summary
Nitrogen fertilizer is the most widely used fertilizer (300-350 kg/ha) in corn plants. It is the least utilized in soil (only 40% - 50%) compared to other nutrients. Excessive application of N fertilizer can cause problems, for example, the change from an immobilized form of nitrogen, NH4+ in a more mobile form to NO2and NO3- biochemically by chemoautotrophs bacteria called the nitrification process (Philippot & Germon, 2005). The oxidation of NH4+ into NO3-, which is commonly called the nitrification process, in the soil needs to be controlled because it causes inefficiency of nitrogen fertilization. Andisols which have high soil organic matter content can increase the population of nitrifier bacteria. Fertile soil has a higher nitrifying bacterial population and if added with N fertilizer, the bacterial population will increase
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
