PERFORMANCE OF CORN HYBRIDS WITH DIFFERENT NITROGENATED SOURCES FOR THE SÃO PATRÍCIO VALE
2017
Silva, Welcio Rodrigues | Buso, Wilian Henrique Diniz | Firmiano, Raquel Silva | Silva, João Marcos Guedes
The growth of production systems using technologies in the cerrado is largely demanded the use of corn hybrids with better adaptation, making it necessary to evaluate the performance to make recommendations to producers in different regions. With this aim with this research was to evaluate the performance of corn hybrids under two N sources in closed conditions in the Ceres region, Goiás. The experimental design was a randomized complete block design in a factorial 10x2 (ten maize hybrids and two nitrogen sources) with four repetitions. Trees were planted on November 29, 2013, the the crop system was the conventional tillage. Harvest was held on 15 May 2014. Comparing the hybrid in different sources, it is observed that the hybrid BG7049H was higher using urea. But the hybrid BG7032H was higher with Novatec, both for variable stem diameter. For the variables height of plant and ear, ear length, number of grain per row and number of rows of grain, significant differences for nitrogen sources studied were not identified. There was only difference between hybrids in the hybrid BG7037H a higher value than the others. The mass of 1000 grain hybrids that showed higher values (P>0.05) were P3646H, P4285H, LG6304 and BG7032H. Regarding productivity the P3646H hybrids, 30A91PW, 30A16PW and 30A37PW were the most productive for the conditions of this experiment.
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