Efficiency of Using Nitrogen Fertilizer in Increasing The Productivity of Some Varieties of Maize
Maize is one of the important commodities in the management of the Indonesian agricultural economy. The main problem arises from the aspect of productivity which is not yet optimal, which is caused by the lack of precise fertilization provided. The character of maize which is very responsive to fertilization, especially Nitrogen, is the starting point in efforts to increase national maize productivity, so through research the aim is to see the efficient dosage of Nitrogen fertilizer on several maize varieties. The research was carried out using a split plot plan using two factors, namely the dose of Nitrogen fertilizer 0, 150, 300, and 400 kg/hectars and maize varieties Bima 19 Ur, Bima 3, Bisma, Pioneer 2, and Pioneer 3 in two seasons, rainy and dry. The data was processed using mixed model analysis to see trends and the best combination of using nitrogen fertilizer doses on maize varieties. The research was carried out in Menggoran, BDH Playen, KPH Yogyakarta, Gunung Kidul Regency, DIY from November 2022 to June 2023. The results of the research show that the trend of using higher doses of Nitrogen fertilizer on the Pioneer 3 maize variety has the best results in all seasons.