The species Lotus corniculatus L. is an important component of grassland ecosystems, due to the fact that it has a great potential to adapt to a number of abiotic stressors, at the same time, the feed also being an important source of protein for animals. The aim of the research was to evaluate the protein content of some Bird's-foot trefoil genotypes at the flowering stage, along with the dry matter content and plant height. As a biological material, we used 16 genotypes of Bird's-foot trefoil, in the third year of vegetation, in the experimental field at ARDS Lovrin. In flowering phenophase biometric measurements were taken and fresh fodder samples were taken for protein and dry matter determinations. The protein was determined with the Kjeldahl apparatus, according to the protocol, and the dry matter was determined in the oven. The results of the research show a great variability of the analyzed parameters of Bird's-foot trefoil (Lotus corniculatus L.), in the conditions of the experimental year 2022. In flowering phenophase, at scythe I, the maximum plant height was 48 cm recorded in genotype LV.2 and the raw protein content was between 7.7 % in LV.12 and 13.97 % in LV.15. An analysis of linear regression shows that the content in protein is not dependent on the height of the plants. In the forms of Bird's-foot trefoil analyzed in the paper, the dry matter shows the greatest variations between 40 and 48%; the protein content between 48 and 60%, while the height of the plant shows the contribution of the variation between 60 and 100%. The analysis shows that the dry matter has a variation of approx. 8%, protein content 12%, while plant height shows the greatest variation (40%). The differences may be associated with growth conditions.

Bird's-foot trefoil, protein, variability, Scythe I

agronomy

Presentation: poster