Production potential of new triticale varieties grown in the region of Dobrudzha

Abstract. The production potential of the new triticale varieties Kolorit, Accord and Respect were investigated in a three-year field experiment (2009 – 2011) carried out in the trial field of Dobrudzha Agricultural Institute, General Toshevo (DAI). The experiment was designed by the split plot method in 4 replications, the size of the trial plot being 12 m2. The investigation involved four predecessors – oilseed rape, pea, sunflower and maize, and three fertilization norms according to the type of predecessor. The effect of some agronomy factors: the year conditions, the type of predecessor and the norm of fertilization, on the formation of yield, test weight, and 1000 grain weight of the new triticale varieties was analyzed. It was found that the year conditions and the level of mineral fertilization were the decisive factors for the formation of the yield of these varieties. Test weight was influenced to the highest degree by the year conditions and the genotype. The environment was determining for 1000 grain weight, while the genotype and the fertilization norm of mineral fertilization had similar effect. The new genotypes were responsive to fertilization, the tiered increase of the nitrogen fertilization norm leading to analogous higher productivity. During the years of investigation all three varieties gave high yields; varieties Accord and Respect had the highest test weight, and varieties Kolorit and Accord – the fullest grain with the largest size.