Efficacy of herbicidal treatments on weed flora in wheat

Cilj rada bio je utvrditi korovnu floru u usjevu pšenice, učinkovitost herbicida i njihovih kombinacija u preporučenoj dozi na suzbijanje korovnih vrsta na poljskom pokusu provedenom na proizvodnim površinama obiteljskoga poljoprivrednoga gospodarstva „Hager“ u selu Zdenci koje se nalazi u Virovitičko- podravskoj županiji Republike Hrvatske. Pokus je postavljen prema slučajnom bloknom rasporedu u tri ponavljanja. Utvrđerno je ukupno 11 korovnih vrsta koje pripadaju uobičajenoj korovnoj zajednici usjeva gustoga sklopa. Najzastupljenije korovne vrste u istraživanju su: A. spica-venti, A. myosuroides, P. annua, C. bursa-pastoris i L. purpureum. Najveći koeficijent učinkovitosti ostvaren je kombinacijom herbicida djelatnih tvari flufenacet + diflufenikan i beflubutamid u dozi 0,3+0,3 l/ha, jednako kao i primjena herbicida s djelatnom tvari flufenacet+diflufenikan u dozi 0,6 l/ha. Najmanji učinak na suzbijanje korova ostvaren je primjenom herbicida djelatne tvari beflubutamid u dozi od 0,5 l/ha.The aim of this study was to determine the weed flora in wheat, the efficiency of herbicides and their combinations in the recommended dose for control of weed species in a field experiment. The experiment was conducted on the agricultural area of the family farm "Hager" in the village Zdenci, located in Virovitica-Podravina County of the Republic of Croatia. The experiment was set as a randomized complete block design with three replications. A total of 11 weed species, common for densely sown crops, were identified. The most common weed species in the study were: A. spica-venti, A. myosuroides, P. annua, C. bursa-pastoris and L. purpureum. The highest herbicide efficiency coefficient was achieved by the combination of herbicides with the active ingredients flufenacet + diflufenican and beflubutamid at a dose of 0.3 + 0.3 l/ha, as well as the application of herbicides with the active ingredient flufenacet + diflufenican at a dose of 0.6 l / ha. The lowest weed control was achieved by applying the herbicide with the active ingredient beflubutamid at a dose of 0.5 l / ha