Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Angelina MUHOVA, Stefka STEFANOVA-DOBREVA, Viliana VASILEVA, Georgi RUSENOV
The phenological development and grain yield of triticale varieties of different originated were studied in a three-year field experiment for the period 2019-2022. Based on the De Martonne Drought Index, the conditions of the growing seasons were characterized. The dates of the occurrence of the main stages of plant development were recorded, and the interphase periods were characterized based on the number of days with an active temperature above 5°C, the sum of the active temperature, the average temperature, and precipitation. Correlational dependences between grain yield and meteorological parameters during the interphase periods were found. The functional relationship between the amount of precipitation and grain yield was described using mathematical models thus, the grain yield can be predicted. The effects of the environment and the interaction between the varieties and the environment on grain yield were confirmed. The most productive varieties among the tested ones were shown.
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