Published in Scientific Papers. Series A. Agronomy, Vol. LXIV, Issue 1
Written by Elena BONCIU, Gabriela PĂUNESCU, Elena ROȘCULETE, Cătălin Aurelian ROȘCULETE, Aurel Liviu OLARU
The paper aims to analyze the influence of the interaction variety x year x location at 15 varieties of winter wheat of different origins, grown in Romania for 3 years (2018-2020) in three different locations: University of Craiova - ARDS Caracal, NARDI Fundulea and Mircea Vodă - Brăila county. The highest yield was recorded by the Sothys variety in 2020 at Caracal location - 13128 kg/ha and the lowest yield by the Avenue variety in 2020 at Mircea Vodă location - 2600 kg/ha. The analyzed data highlighted the fact that in all the years at the varieties Airbus, Alcantara, Anapurna, Koreli, Lennox, Sothys and Otilia, the yield was very low in Fundulea and Mircea Vodă compared to Caracal. In 2018, the varieties Exotic, Glosa, Izalco and Sofru presented statistically undifferentiated yields, when they were cultivated in Caracal and MirceaVodă. The results showed that the studied interaction strongly influenced the yield. Taken separately, the factors studied also influenced yield. The yields obtained in 2018 and 2020 were distinct significantly and very significantly higher than the average yield of the three years (7109 kg/ha), while the yield of the year 2019 was very significantly lower than average. The yields obtained at Fundulea and Mircea Vodă were much lower than those obtained at Caracal on average over the three years and the 15 varieties tested. The stability of yield was analyzed in terms of the coefficient of variation. The lowest values of the coefficient of variation were recorded by the varieties Lennox (11.57%) and Exotic (13.66%) - the most stable, and the highest value by the variety Izalco (21.13%) - the most unstable.
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