ОЦЕНА НА ЕЛЕМЕНТИTE НА ПРИНОСОТ КАЈ РАНИ И СРЕДНО-ДОЦНИ ХИБРИДИ ПЧЕНКА ОДГЛЕДУВАНИ ВО ШТИПСКО ASSESSMENT OF YIELD ELEMENTS ON EARLY AND MEDIUM-LATE MAIZE HYBRIDS GROWN IN SHTIP AREA

Abstract

Republic of Macedonia can have quite a wide area covered by corn if appropriate hybrids are determined for each individual region. The yield is the basis for determination of the proper hybrid in relation to the length of the vegetation, and strongly depends on the elements that determine it. In this research, have been evaluated the elements of the yield and the factors that affects them at the maize hybrids PKB323, NSSC333, ZPSC704, NS721, NS770. All hybrids shown one cob per plant, but the length of the cob varied and depends on the year, location and genotype. The shortest average length of the cob was determined at the hybrid NSSC333 (18.75 сm), while the largest at NS721 (23.75 cm). The hybrids from FAO300 maturity group have shown lower average value for cob diameter compared with hybrids from the FAO700 group. In this study, the hybrids with the smallest average length of kernel, were NSSC333 and NS721 (0.87 cm), and the hybrid with the highest average length was ZPSC704 (1.04 cm). The number of rows per cob is a genotype characteristic, but it also depends on the growing conditions too. In tested hybrids, the number of rows was ranged from 14 to 16.4. According to the received data, the lowest average weight of the two years was obtained in the NSSC333 hybrid (177.5 g) and the highest in NS721 (320 g).