Browsing by Author "Zaremohazabieh, Sara"
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Item Effects of rimsulfuron, foramsulfuron and conventional herbicides on weed control and maize yield at three planting dates(Uludağ Üniversitesi, 2011) Zaremohazabieh, Sara; Ghadiri, HosseinField experiment was conducted in 2007 and 2008 in research station of college of agriculture, Shiraz University of Iran, to evaluate the effect of herbicide application and planting dates on yield and yield components of maize and weed control. Treatments were atrazine plus alachlor at 1 + 2.44 and 1.92 + 1.5, 2,4-D + MCPA at 0.36 + 0.31 and 0.54 + 0.46, rimsulfuron at 0.02 and 0.04, foramsulfuron at 0.03 and 0.06 kg a.i. P ha-1, a weed free and a weedy check and three planting dates (5 May, 5 June and 5 July). Results of both years showed that foramsulfuron and atrazine+ alachlor in both applied rates controlled weeds greatly in all planting dates. Combination of 2,4-D + MCPA in both applied rates controlled field bindweed (Convolvulus arvensis L.) about 85 to 99% in the 3rd planting date. The minimum weed biomass reduction and lowest maize grain yield was obtained with rimsolforun in both applied rates and 2,4-D + MCPA at 0.36 + 0.31 kg a.i. P ha-1 in the first planting date. Maximum weed biomass reduction and the highest maize grain yield were obtained with foramsulfuron in both applied rates in the 3rd planting date and 2nd planting date, respectively.Item Impact of sowing date and tillage method on morphophysiological traits and yield of corn(Uludağ Üniversitesi, 2017-04-05) Zaremohazabieh, Sara; Kazemeini, Seyed Abdolreza; Ghadiri, Hossein; Edalat, MohsenEnvironmental variations related with different sowing dates have an altering effect on the growth and development of corn plants. A field experiments were conducted to evaluate the effect of sowing date and tillage method on corn growth and yield. The treatments included two tillage systems (conventional and no tillage) and seven sowing dates (11-May, 18-May, 25-May, 1-Jun, 8- Jun, 15-Jun and 22-Jun). The interaction between tillage method and sowing date showed that the highest kernel yield (KY), biological yield (BY) and harvest index (HI) were observed at first sowing date and conventional tillage method and the lowest KY, HI and BY were obtained in no-tillage method and latest sowing date in both years. Delay in sowing from 11-May to 22-Jun decreased significantly the plant height, leaf number, leaf area index and yield by 6.43, 7.98, 17.36 and 42.7% in 2014 and 7.93, 8.87, 14.88 and 40.01% in 2015, respectively. The highest crop growth rate (CGR) was observed in conventional tillage (56 and 49 (g day 1m -2 )) as compared to no-tillage (45.7 and 46.5(g day-1m -2 )) in 2014 and 2015, respectively. The leaf area index (LAI) had a positive and significant correlation with corn height, leaf number and yield.