Maize (Zea mays L.) is the most important cereal grown in Romania and is produced all over the country under diverse climate and environment conditions. Besides all these environmental factors (temperature, precipitation, fertilization, etc.), the used hybrids play an important role to establish the final production and quality parameters. The experimental research was carried out in the agricultural year 2017 in Grindu and Gheorghe-Doja locations in Ialomița County, using four hybrids: Pioneer P9903 (FAO 360, mid-early), P9537 (FAO 350, mid-early) and Dow DA SONKA (FAO 380, mid-early), DS 0336C (FAO 320, early). The research objective was to determine the influence of the hybrids on the following indices: yield, % kernel/cob, 1000 kernel weight, starch and crude protein content, and also to establish a correlations between yield capacity and quality indices for tested hybrids. All maize hybrids were have been cultivated under the same fertilisation conditions. In order to achieve the necessary data, some soil analysis were performed (soil pH, phosphorus and potasssium mobile forms, humus) ans also plant analysis (dry matter, total nitrogen content, crude protein and starch content). The experimental results indicated that the DA SONKA (mid-early) and DS0336C (early) hybrids had the best performance on yield capacity due to a very high production potential and also provided a high crude protein content. P9903 (mid-early) and P9537 (mid-early) hybrids have higher starch content compared to DA SONKA hybrid who had the lowest value. Among the four tested hybrids under the described pedoclimatic conditions, the recommended hybrid is DA SONKA, because it has the highest protein content (a very important indicator of crop quality) and also was highlighted with the highest yield. The conclusions of the research underline the importance of choosing the optimal hybrid in order to obtain a high quality crops with high yields.

hybrids, maize, yield components, crude protein, starch

field crops and pastures

Presentation: poster