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- W2247339055 abstract "Weeds represent one of the limiting factors for reaching high grain yields in maize production. Observation of weed species emergence, as well as proper choice of herbicides and term of their application, can significantly decrease negative effects to maize crops caused by weeds. So the aim of this paper was to explore the effect of weed killers, applied after sowing but before sprouting, on decrease of weed species presence and weed plants number in maize crops. The field trial carried out during 2005 in the vicinity of Leskovac (southern Serbia) was set to observe efficiency of four herbicides (S-metolachlor, acetochlor, alachlor + linuron, and alachlor), applied after sowing but before sprouting, in preventing weeds of maize crops. The trial was set in RCB design with three replications. Number of weed species and plants was counted per m, and efficiency coefficient of herbicides was calculated according to Dodell et al. (Stankovic, 1969). There were seven weed species in the maize crop with the average number of individuals per m of 123. The highest number of individuals was shown by Setaria ssp. (42 plants/m) and Chenopodium album (35 plants/m). The highest coefficient of weed killing efficiency was given by acetochlor and amounted 71.54, and the lowest one by s-metolachlor where it was 63.41. All these weed killers expressed a weak effect to Abutilon theophrasti, Convolvulus arvensis, and Sorghum halepense. All the herbicides had a highly significant effect on grain yield value. Maize grain yield ranged between 7.235-8.943 kg/ha. Rezime: Korovi u kukuruzu predstavljaju jedan od ogranicavajucih faktora u postizanju visokih prinosa. Pracenjem pojave korovskih vrsta, izborom herbicida i vremenom njihove primene, mogu se u znacajnoj meri umanjiti negativni efekti prisustva korova u usevu kukuruza. Cilj ovoga rada je bio ispitati uticaj herbicida primenjenih posle setve a nakon nicanja u smanjenju korovskih vrsta i njihove brojnosti u usevu kukuruza. U ogledu koji je 2005. godine izveden u okolini Leskovca pracena je efikasnost 4 herbicida (S-metolahlor, acetohlor, alahlor + linuron i alahlor) primenjena pose setve, a pre nicanja u suzbijanju korova u kukuruzu. Ogled je postavljen po blok sistemu u tri ponavljanja. Brojnost korovskih vrsta je određena po m, a koeficijent efikasnosti herbicida po Dodell-u i sar. (Stankovic, 1969). U usevu kukuruza bilo je prisutno 7 korovskih vrsta sa brojnoscu od 123 jedinke po m2. Najvecu brojnost imale su Setaria ssp. (42 jedinke po m) i Chenopodium album (35 jedinki/m). Najveci koeficijent efikasnosti u suzbijanju korova imao je acetohlor (preparat Acenit)-71.54, a najslabiji smetolahlor (preparat Dual Gold) – 63.41. Svi herbicidi su imali vrlo slabo dejstvo na Abutilon theophrasti, Convolvulus arvensis i Sorghum halepense. Svi herbicidi su vrlo znacajno uticali na visinu prinosa kuuruza u odnosu na kontrolnu varijantu. Prinos kukuruza se kretao u granicama od 7.235-8.943 kg/ha u zavisnosti od efikasnosti primenjenih herbicida." @default.
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- W2247339055 date "2009-01-01" @default.
- W2247339055 modified "2023-10-15" @default.
- W2247339055 title "Possibility of weed killing in maize by herbicides applied after sowing and before sprouting." @default.
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