The Effects of Different Plant Densities and Nitrogen Levels on Some Macro and Micro Element Contents of Okra

Abstract

Field trials were conducted in two locations: the training fields of the Ege University Odemis Vocational High School and Ege University, Menemen Research, Application and Production Farm, where the effects of different plant densities and nitrogen levels on macro and micro element contents of okra (Abelmoschus esculentus L.) were investigated. The experiments were conducted using a split-plot design with three replicates, where the main plots consisted of nitrogen applications and sub-plots of plant densities. Nitrogen fertilizers were applied in the form of urea and ammonium nitrate. Five different nitrogen levels (0, 40, 80, 120 and 160 kg N ha-1) and two different distances between rows (15 cm * 70 cm and 25 cm * 70 cm) were tested. Macro and micro nutrients in fruits and leaves were determined. The N content of the leaves increased with higher nitrogen levels in the Odemis location. The maximum nitrogen content in leaves was determined at the 80 kg N ha-1 application in this location. Additionally, the content of Mg, Zn, and Mn in the leaves and P, Ca, Mg, Fe, and Zn in fruits significantly affected nitrogen doses at the Odemis location. The Mg, Cu and Zn uptake of leaves and Zn content in fruit when compared to the control parcel significantly affected nitrogen doses at Menemen.