Biology, occurrence and control Cockspur Grass(\kur{Echinochloa crus-galli} (L.) Beauv.)on arable land

This work is focused on the occurrence of Cockspur Grass (lat. Echinochloa crus-galli) on arable land and ways and means of its regulation. Damages which are annually caused by weeds are very difficult to quantify and their negative impact is reflected every year in all crops and all fields. Cocksour Grass belongs among the most dangerous weeds, especially in wide-row stands. Furthermore, I focused on the issue of late weed, seed dormancy and resistance of populations. A related question is possible solution to the protection of stands against weeds using both preventive and direct methods of control plants. An experiment was made to check influence of herbicides on the population of Cockspur and other weed species which occur in this root-crops. The result showed which kind of herbicide is more effective with pre-emergence application to Cockspur Grass and other monitored weeds