Zlatina Uhr, Grigori Ivanov


The study was conducted on the experimental field of IPGR "K. Malkov"-Sadovo in the period 2012-2014, the competitive variety trials is displayed on the block method in three repetitions with the size of the experimental plots 10 m2. In an attempt involved 22 varieties of winter wheat breeding program in Sadovo, the old variety 301 as a control and the standard variety Enola. They are grown in conventional and certified organic field. Biometric characteristic was taken on 15  plants of wheat each repetition. Processing of the results obtained are used analysis of variance, correlation and regression analysis. All applied statistical methods were performed using SPSS 19. Grain yield derived from varieties grown in organic field averaged 15.5% lower than in the conventional field and averaged 6,29 t/ha. Highest productivity in both farming systems show varieties which gave 6.5 and 7 t/ha grain–Yunak, Liusil, Boriana, Momchil, Geia-1, Zarevetc and Diamant.

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