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


Published in Scientific Papers. Series A. Agronomy, Vol. LXIV, Issue 2
Written by Hristiyana HRISTOVA, Krasimira UZUNOVA, Nesho NESHEV, Mariyan YANEV, Anyo MITKOV

In 2020 a field trial with the maize hybrid “Blason Duo” was conducted. The trial was stated on the experimental field of the Agricultural University of Plovdiv, Bulgaria. The performance of the herbicide product Starane Gold (100 g/l fluroxypyr + 1 g/l florasulam) in increased rates (1.20, 1.80 and 2.40 l ha-1) was evaluated. Untreated plot was accepted as a control. The efficacy and the selectivity of the herbicide, several biometrical parameters, and as well as the yields and its components were studied. The highest biological efficacy against the existing broadleaf weeds at the rates of 1.80 and 2.40 l ha-1 were reported but phytotoxic symptoms score 4 (by the 9-score scale of European Weed Research Society) for the rate of 2.40 l ha-1 were reported. Simultaneously with the decrease of the density of the broadleaf weeds a significant increase in the values of the studied traits as stem height and ear number per plant were found. The absolute and hectoliter seed mass as well as the yields were the highest for the treatment with application rates of 1.20 and 1.80 l ha-1.

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