DETERMINATION OF PERFORMANCE OF SOME KWS HYBRID CORN (Zea mays L. indentata S.) VARIETIES BELONGING TO DIFFERENT MATURITY GROUPS IN ECOLOGICAL CONDITIONS OF CUMRA

In order to determine the performance of some KWS hybrid corn varieties (V1; Kerbanis, V2; Kefieros, V3; Kontigos, V4; Kefrancos, V5; 2572) belonging to different maturity groups, this study was conducted in Çumra ecological conditions between 2019 and 2020. The research was carried out as three repetitions based on the “randomized plots experimental design". When the results obtained in both years of the study were evaluated together, it was observed that the highest thousand grain weight and grain yield values were obtained from the V2 variety. The highest stem diameter values were obtained from the V1 variety, while the highest first ear height values were obtained from the V2 and V4 varieties. While the highest protein ratio values were obtained from V1 and V3 varieties, the highest grain ear ratio values were obtained from V1 varieties. The highest plant height, number of grains per ear, tasseling stage, and grain weight per ear values were obtained from the V5 variety. However, obtaining the highest stalk lodging and grain moisture values from this variety in both research years eliminated other positive characteristics of this variety. When the highest grain yield value and lowest grain moisture and stalk lodging values are evaluated together, it is seen that the V3 variety is in a recommendable for Çumra ecological conditions