Variability of productivity structure elements in maize hybrids of different FAO groups and their relationship with grain yield under different irrigation and moisture conditions in the arid steppe of Ukraine

Abstract

The study presents the results of the research on the indexes of the productivity structure of corn hybrids of different FAO groups and the model of their correlation with kernel yields of innovative corn hybrids under different irrigation modes and water supply under conditions of the Arid Steppe of Ukraine. The hybrids were sown under different irrigation modes (common sprinkling, drip irrigation, sub-irrigation) and without irrigation to compare their drought-resistance. The research determines the indexes of the kernel weight of a cob and 1000 kernel weight in the hybrids of different FAO groups under different water supply and irrigation modes.