Performance of the Dactylis Glomerata L. Species in the Conditions of A.R.D.S. Lovrin

Abstract

The Dactylis glomerata L. species is found in a spontaneous state in the meadows of Romania. It is an essential component in the composition of simple mixtures with alfalfa and complex mixtures along with other grasses and perennial legumes. The manifestation of agrobiological characteristics in Dactylis glomerate L. is characterised by complexity and variability, influenced by technology, soil, and climatic conditions that vary inherently in space and time. The research was focused on the knowledge of the agro-biological characteristics and production capacity of the species Dactylis glomerata L. in correlation with local conditions. The research was carried out at Agricultural Research-Development Station of Lovrin and as a biological material the cock's-foot genotype LVDG1 was used, the culture has been established in the Autumn of 2020. Biometric measurements were made on the main agro-biological characters until the first scythe was harvested as a green mass feed. Research shows that all parameters analyzed have the same tred, in both experimental years, with small variations, the differences being attributed to the lack of uniformity of precipitation, the temperature not being a restrictive factor. In the case of the experimental site, the characteristics and type of variation of the decadal quantities of atmospheric precipitation, expressed by the modified Angot index (km), show that in the range of 1.01 to 31.05. 2021, the decades with a pluviometric surplus prevail, with large differences compared to the same period of 2022, which is also found in the externalization of the characters in cock's-foot. The rainfall in the year 2021 contributed to a better expression of vegetative parameters, including the production of green mass at the first scythe. Hence, in 2021 was the highest production of green mass at the first scythe of 25 t.ha -1.