Efikasnost nekih herbicida u usevu šećerne repe u proizvodnim uslovima 2020. i 2021. godine

Abstract

Tokom 2020. i 2021. godine ispitivana je efikasnost herbicida za suzbijanje širokolisnih korova u usevu šećerne repe na području Južnog Banata. Ispitivane su varijante sa kombinacijom sledećih aktivnih materija: metamitron, etofumesat, fenmedifan, trisulfuron-metil, klopiralid i lenacil. Herbicidi su primenjeni u tri split tretmana u razmaku od 10 do 20 dana, tretiranjem korova u osetljivoj fazi (kotiledoni i prvi par stalnih listova). U ogledu su bile zastupljene sledeće korovske vrste Chenopodium album, Sttachys annua, Solanum nigrum, Euphorbia cyparissias, Polygonum aviculare, Ambrosia artemisiifolia, Datura stramonium, Cirsium arvense, i Abutilon theophrasti. Rezultati ispitivanja su pokazali da je Ch. album u obe godine ispitivanja pokazao nisku osetljivost prema svim ispitivanim varijantama osim kombinacije metamitron, etofumesat, lenacil, trisulfuron metil koja je ispoljila maksimalnu efikasnost kako prema ovom korovu tako i prema ostalim korovskim vrstama. Dobijeni rezultati potvrđuju efikasnost dostupnih herbicida na tržištu, nakon povlačenja iz upotrebe do sada korišćenih aktivnih materija.

In 2020 and 2021 field trials were carried out to evaluate efficacy herbicides (three and four active substances) for controlling broadleaf weeds in sugar beet crop, in the South Banat region. Treatmans with a combination of the following active substances were tested: metamitron, ethofumesate, fenmedifam, triflusulfuron-methyl,clopyralid, lenacil. Herbicides were applied in three treatments with an interval of 10 to 20 days depending on depending on weather conditions and the appearance of weed plants that were treated in a sensitive phase (cotyledons and the first pair of permanent leaves). The following types of weeds were represented in the experiment Chenopodium album, Sttachys annua, Solanum nigrum, Euphorbia cyparissias, Polygonum aviculare, Ambrosia artemisiifolia, Datura stramonium, Cirsium arvense, Abutilon theophrasti. The results suggest that Ch. album in both years of testing showed low susceptibility to all tested variants, except for the combination of metamitron, etofumesate, lenacil, trisulfuron methyl, which showed maximum efficiency both against this weed and against other weed species. The obtained results confirm that even with the loss of the license for the registration of some active substances, there are effective combinations of herbicides that can successfully keep the sugar beet crop free from weeds.