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      • Open Access Article

        1 - Evaluation of Some Sulfonylurea Herbicides in Sweet Sorn (Zea mays L.) Weed Control
        Mahboobeh Nabizadeh Majid Abbaspour Ali Asghar Chitband Mohammad Bazoobandi
        To evaluate the performance of new Sulfonylurea herbicides in sweet corn weed control, a factorial experimental research was carried out based on a completely randomized block design with three replications in Agriculture and Natural Resources Research Center of Khorasa More
        To evaluate the performance of new Sulfonylurea herbicides in sweet corn weed control, a factorial experimental research was carried out based on a completely randomized block design with three replications in Agriculture and Natural Resources Research Center of Khorasan Razavi in 2012. The first and the second factor, were sweet corn varieties and chemical control treatments respectively. The sweet corn varieties included KSC403su, Merit and Chase. The chemical control treatments included Nicosulfuron (Cruz), Nicosulfuron (Cruz) + Bromoxinyl + MCPA (Brimicide MA), Foramsulfuron (Equip), Rimsulfuron + Nicosulfuron (Ultima), Mesotrion + S-Metolacholor + Terbuthlazine (Lumax 537.5 SE), with weed free, and weed infested in each block. Sampling was done 4 weeks spraying each plot. The result showed that red root pigweed, common purslane, field bindweed, common lambsquarters, purple nutsedge, black night shade dry weight were reduced significantly by all herbicides compared with weedy check. Among the sweet corn varieties, the highest and the lowest weeds density and dry weight resulted by Chase and KSC403su, respectively. Mesotrion+ S-Metolacholor+ Terbuthlazine herbicide had sound effect on dry weight reduction of red root pigweed, common purslane, field bindweed, common lambsquarters, purple nutsedge, black nightshade, with highest control of common lambsquarters. Also, red root pigweed, common purslane and field bindweed should satisfactory control by nicosulfuron and nicosulfuron+ brimicide MA applied, whereas nicosulfuron + rimsulfuron had suitable effect on common purple nutsedge. Manuscript profile
      • Open Access Article

        2 - The Effect of Irrigation Regime on Yield and Some of Physiological and Morphological Traits in 8 Lines and Cultivars of Pea
        A. Behrouzmand M. Yarnia M.B. Khorshidi Benam
        This research was conducted in order to evaluate effects of irrigation levels on yield and yield components of 8 pea lines and cultivars at research station of faculty of agriculture in Islamic Azad University, Tabriz branch in 2010 growth season. The experiment was con More
        This research was conducted in order to evaluate effects of irrigation levels on yield and yield components of 8 pea lines and cultivars at research station of faculty of agriculture in Islamic Azad University, Tabriz branch in 2010 growth season. The experiment was conducted in split plot form based on completely block design with three replications. Treatments were irrigation levels: Irrigation after 70, 105 and 140 mm evaporation from pan as main plot, and lines and cultivars of pea: Jam, Azad, FLIP 00-78C, FLIP 97- 32C, FLIP 00-75C, FLIP 97-26C, ILC8617 and ILC 482 as sub plot. Results showed that the highest branch number per plant, number of pod and number of grain per plant were obtained in ILC 482 and the lowest number grain per plant were obtained in FLIP00-78c and ILC 86 17. The higher values for grain yield (208 g.m-2) were obtained in ILC 482.  In comparison to irrigation after 70 mm evaporation from the evaporation pan, the irrigation after 105 and 140 mm evaporation caused 23 and 45% decreases in the leaf area, 29 and 52% in number of grain per plant, 11 and 23 % in 1000 kernel weight, 29 and 51 % in pod number per plant, respectively. Irrigation after 105 and 140 mm evaporation from the evaporation pan, led to 27 and 64% reduction in grain yield, so in production of pea should be considered to value of water and yield of crop.  Manuscript profile
      • Open Access Article

        3 - Evaluation of the Effects of Integrated Management Weed Control on Corn Field by Using Reduced Dose of Foramsulfuron and Nicosulfuron Herbicides
        M. Matinfar M. Matinfar F. Lotfi Mavi A.R. Shayestehnia
        In order to evaluate the effects of integrated weed management on weed control by using reduced herbicide dose, a field experiment was conducted in 2010 in Qazvin. The experiment was conducted in randomized complete block design with 24 treatments and 4 replications. Th More
        In order to evaluate the effects of integrated weed management on weed control by using reduced herbicide dose, a field experiment was conducted in 2010 in Qazvin. The experiment was conducted in randomized complete block design with 24 treatments and 4 replications. The treatments were: different planting patterns at three levels (single row, square double rows and zigzag double row  plantings) and doses of  Nicosulfuron and Foramsulfuron application at four levels (1, 1/5, 2 and 2/5 liters per hectare), The results showed that among the different planting patterns, zigzag planting reduced weed populations and their dry weights significantly. Foramsulfuron herbicide could control weeds better than Nicosulfuron. Among the herbicide dosages, 2/5 litter dose per hectare highly reduced weed density its dry weight as compared to one litter dose. Manuscript profile
      • Open Access Article

        4 - Effect of three post-emergence herbicides and cultivation on weed management in silage corn fields
        Farid Lotfi Mavi alireza Shayestenia jahanfar Daneshian amin moradiagdam
        The experiment was carried out as a factorial experiment based on a randomized complete block design with four replications to evaluate of the best combination of herbicides and cultivation in silage corn fields in Miyaneh region in the summer of 2009. Treatments were c More
        The experiment was carried out as a factorial experiment based on a randomized complete block design with four replications to evaluate of the best combination of herbicides and cultivation in silage corn fields in Miyaneh region in the summer of 2009. Treatments were cultivation (with or without it), herbicides (Foramsulfuron, Nicosulfuron and 2,4-D+MCPA) and hand weeding. Weeds were sampled in three stages during growing season after treatment applications and weed density and weed dry weight were recorded. The results indicated that herbicide treatments were significantly influenced in weeds density and dry weight at 1% probability level. The most effective herbicide for weeds density and weeds dry weight decreasing percentage was Foramsulfuron which was significantly different from other herbicides. The lowest weed density and weed dry weight were observed in 2,4-D+MCPA treatment. Cultivation was significantly effective on weeds density and weed dry weight. Therefore, chemical control along with cultivation could result in weeds depression and crop yield enhancement. Manuscript profile