Determination of the Proper Sowing Time for Some Silage Corn Varieties under the Ecological Conditions of Bing？l Province

This study was carried out to determine appropriate sowing time for some silage maize varieties grown as the main product in Bing？l ecological conditions in 2016 and 2017 cultivation seasons. In the study, field trials were established according to divided parcels in randomized blocks design with 3 replications. Two silage maize cultivars (30B74 ve Burak) were placed on main parcels, and 6 different sowing dates were placed on sub-parcels. In the study, data for plant height, plant stalk diameter, cob ratio, leaf ratio, and stalk ratio in plant, green herbage yield and dry herbage yield were investigated. Significant differences were obtained in terms of the traits examined in the study. According to two-year averages; plant height 248.7-282.7 cm, plant stalk diameter 19.9-22.6 mm, cob ratio 30.3-35.1%, leaf ratio 15.2-18.1%, stalk ratio 48.8-53.1%, green herbage yield 7110-9987 kg da-1 and dry herbage yield were changed between 2078-2514 kg da-1. As a result of the correlation analysis; important and positive correlations, between green herbage yield and plant height and leaf ratio; between dry herbage yield and plant height, stalk diameter, leaf ratio and green herbage yield; between plant height and leaf ratio, were determined. As a result of the research, it was concluded that the most suitable sowing date could be the second half of April in silage corn cultivation as the main product in Bing？l ecological conditions, and 30B74 silage corn variety could be suggested for cultivation