Analysis of the possibilities for growing hedgehog head (Dactylis glomerata, L.) variety “Dabrava” on cinnamon forest soil. Vegetative development

The soil and climatic conditions of the semi-mountainous regions are specific. One of the most important tasks in creating artificial grasslands for haymaking in such areas is the selection of suitable grass species. The aim of the experiment is to analyze the vegetative potential of hedgehog head from the variety “Dabrava” grow on cinnamon forest soil. To achieve this goal, a section of the foothills of Sakar Mountain was selected. The hedgehog head variety “Dabrava” is grown under natural conditions without irrigation. Every year is fertilization with norm N 12 P 6 K 6 . The analysis of the four-year research shows that the hedgehog head variety “Dabrava” grown on cinnamon forest soil has good adaptability and survival in the conditions of the Sakar region. It’s develops normally, and vegetative development begins in the first ten days of March. In the first year of sowing it develops slowly and the growth rate is the weakest. In the following years the vegetative development has a growth rate, which in ten days reaches 15 cm in the first spring undergrowth and 8.8 cm in the second summer undergrowth. The vegetation period varies in the first spring undergrowth from 60 to 82 days, and in the second summer undergrowth from 51 to 80 days. The height of the grassland in mowing maturity in the first spring undergrowth is from 61.2 to 73.2 cm, and in the second summer undergrowth is from 41.7 - 48.2 cm. The overall vegetative development, growth rate and height of the grassland are directly dependent on climatic factors.