ISSN 2285-5785, ISSN CD-ROM 2285-5793, ISSN ONLINE 2285-5807, ISSN-L 2285-5785
 

INVESTIGATION OF THE PRODUCTION POSSIBILITY OF EARLY MAIZE HYBRIDS, CULTIVATED FOR GRAIN UNDER NON-IRRIGATION IN NORTH-EAST BULGARIA

Published in Scientific Papers. Series A. Agronomy, Vol. LXII, Issue 2
Written by Vanya DELIBALTOVA, Manol DALLEV, Ilian ZHELYAZKOV

The field experiment was held in the experimental of the selected area in Tulenovo village in region Shabla (North-East Bulgaria) during the period 2015-2017. The test was performed by means of a block method with four repetitions; experimental field area - 25 m2 after winter triticale predecessor. The following hybrids of Syngenta Company were tested; Ambishas, Cansas, Cobalt, Ulises and Iridium. The aim of the study was to establish the elements of productivity and the yield of early maize hybrids, cultivated for grain under non-irrigation in North-East Bulgaria. All the stages of the established technology for maize growing were followed. The grain yield is determined with standard grain moisture of 13%. The indices; length of the cob (cm), number of the row per cob, number of the grains per row, mass of the cob, mass of the grains per cob (g) thousand kernel weight (g), test weight (kg), and grain yield (kg/ha) were determined. The analysis of the results showed that the production possibility of hybrids maize is determined to a great degree by the meteorological conditions of the year mostly by the precipitation quantity. The highest values of elements of productivity were reported with the hybrid Iridium and the lowest - with the Cansas hybrid. On average during the period of the study (2015-2017), the highest grain yield was obtained from Iridium - 8007 kg/ha, followed by Ulises 7690 kg/ha and the lowest - from hybrid Cansas - 6893 kg/ha. The highest weight of thousand kernel (grain) and test weight of maize grain was reported for Iridium hybrid (367 g and 76.9 kg). Out of the studied maize hybrids grown in the region of North-Eastern Bulgaria, it is recommended to cultivate hybrid Iridium, as it proved to be more productive than hybrids Ambishas, Cansas, Cobalt and Ulises in climatically different years.

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