Different irrigation and fertilization levels on the yield and quality of dent corn

Abstract

ABSTRACT Dent Corn (Zea mays indentata indentata), one of the most important plants produced for industrial purposes in many regions of Türkiye. The aim of this study was to determine the interactions of two important factors affecting the yield of dent corn. The study was conducted at the Bursa Uludağ University Yenişehir Ibrahim Orhan Vocational School Agricultural Research Field in 2019-2020. The altitude of the study area was 240 m. Measurements of the physical and quality properties of dent corn were carried out in the laboratories of Bursa Uludağ University. In the research, four different irrigation topics and three different fertigation topics were selected. Drip irrigation method was preferred in order to apply water amounts at different irrigation and fertigation levels. In our study, the highest and lowest irrigation water amounts in both trial years were found to be 780-195 mm and 800-200 mm, respectively, while the highest and lowest actual evapotranspiration (ETa) values were calculated as 830-290 mm and 855-432 mm, respectively. The maximum and minimum yield values of the study years were calculated as 14.6-15.2 t ha-1 and 4.0-5.1 t ha-1, respectively, from I100F100 and I25F50 treatments. However, when the reductions in yield and quality losses are evaluated together, despite the reductions in irrigation water and fertigation levels, I75 and F75 treatments can be recommended.