In the beginning, weeds with shallow roots were successfully eradicated by the harrow. Others (e.g., burdock and stork’s bill) were controlled to a certain extent. The results of FAO "Bioselena" show that the application of the comb harrow had a significant impact on the yield, with an increase of 12.7 % for wheat, 16.7 % for spelt and 23.4 % for ein-korn. The weeds decreased by 51.15 %, 58.14 % and 36.37 %, respectively. Practical recommendations • Drill winter cereals in rows with an increased sowing rate of 7-10 % compared to conventional cereal crops during the most appropriate period (September 25 to October 5 for Northern Bulgaria, 5 to 15 October for Southern Bulgaria). • When the crop is in the „3-leaf“ stage, control the emerging weeds with a... |