Determination of the effects of different nitrogen dose applications on grain yield, some agromorphological characters and popping properties of popcorn

This study was conducted with 3 replications, according to split plotdesign by treatment of 6 different nitrogen doses (0, 10, 15, 20, 25, 30 kg/da N) with two Popcorn varieties (Baharcin and R997) in the main crop growing conditions ofÇukurova University, in 2019. According to the results,significant differences detected between the different N doses for the plant height, first ear height, stem diameter, ear length, number of kernels per ear, weight of per ear, grain weight per ear, 1000 grain weight, grain yield and the popping volume while, significant differences between the varieties for ear width and 1000 grain weight and significan N dose x variety interaction determined for ear length. The response of the popcorn varieties found to be different as highest grain yild was obtained from the 20 kg/da N treatment for Baharcin variety while, highest grain yield obtained from the 30 kg/da N treatment for R997 variety. This situation reveals that the nitrogen use efficiency of different varieties is different and this should be taken into account in nitrogen fertilizer applications.