Effect of Planting Dates on Yield Traits and Its Components for Genotypes of Maize (Zea mays L.)

Abstract

The experiment was conducted in the fields of the College of Agriculture and Forestry University of Mosul for the autumn season 2022-2023, and 10 genotypes were used, namely (DR-F-53, MA-F-53, H-4, DKC-F-59, IK-58, ZP-595, POL-F-6, SYM-F-53, MY-F-53 and SYN-F-54) and the experiment was a The Randomized Complete Block Design (R.C.B.D) was used with three replicates and the first factor was the genotypes, which are (10) and the second factor is three dates, which are (July 23, August 30 and August 6), and the traits of studied (date of tasseling, date of silking, number of ears per plant, number of grains per ear, weight of 500 grains, single plant production). The results of the variance analysis table showed that the genotypes, dates and interaction between them were significant and for all traits. For the first factor of genotypes superior the genotype (9) for the traits of date of tasseling and silking and the weight of 500 grains and superiority of the genotype (1) for the traits of the number of grains per ear and the single plant production and for agricultural dates exceed the first date for the traits date of tasseling and the number of ears and the weight of 500 grains and the single plant production and the interaction the genotypes and agricultural dates superior the genotype (9) for the traits of male flowering and single plant production.