Efficacy of chlethodim, tepraloxydim and quizalofop-p-tefuryl in controlling Sorghum halepense at the rhizome

Possibilities of controlling Sorghum halepense at the rhizome in sugar beet soybean and sunflower crops were studied. Trials were set up using the random block design with four replicates (according to standard EPPO/ /OEPP methods) in the localities of Rimski Šančevi, Žabalj, Čenej, Glogonjski rit, Ruma Futog, Sivac and Vojka over the 1996-2000 period. The following herbicides were applied: clethodim, tepraloxydim, quizalofop-P-tefuryl, cycloxydim haloxyfop-P-methyl, fluazifop-P-butyl, phenoxyprop-P-ethyl quizalofop-P-ethyl, propaquizafop and, the rates of application were registered or lower rates. The weeds were at the 3-6 leaves stage at the time of treatment, and the crops in the early stages of growth. The results showed that the tested herbicides could be successfully used to control Sorghum halepense at the rhizome even when the density is high. Significant differences were neither observered in the efficacies of the higher and lower treatment rates, nor between the evaluations (first and second). No phytotoxicity of the investigated herbicides was recorded.U radu je ispitivana mogućnost suzbijanja Sorghum halepense iz rizoma u usevima šećerne repe, soje i suncokreta. Ogledi su izvedeni na lokalitetima Rimski Šančevi, Žabalj, Čenej, Glogonjski rit, Ruma, Futog, Sivac i Vojka u periodu 1996-2000. godina, po slučajnom blok sistemu u 4 ponavljanja (saglasno standardnim metodama OEPP/EPPO). Primenjeno je vise herbicida i to kletodim, tepraloksidim, kvizalofop-P-tefuril, cikloksidim, haloksifop-metil fluazifpp-P-butil, fenoksaprop-P-etil, kvizalofop-P-etil i propakvizafop u količinama koje su registrovane za primenu, i manjim. U vreme primene, korovi su bili u fazi 3-6 listova, a usevi u početnim fazama porasta. Rezultati su pokazali da se i u uslovima visoke brojnosti ispitivani herbicidi mogu uspešno koristiti za suzbijanje Sorghum halepense iz rizoma U toku ogleda nisu uočene značajne razlike u ostvarenoj efikasnosti između viših i nižih količina primene, kao ni između ocena (prva i druga ocena).Takođe, nije registrovana ni fitotoksičnost ispitivanih herbicida