• List of Articles Trifluralin

      • Open Access Article

        1 - Evaluation the Effects of Some Pre-plant Herbicide and Plastic Mulch on Weed Flora of Transplanted Tomato (Lycopersicon esculentum Mill.)
        Alireza Ranjbaran Mehdi Rastgoo
        To evaluate the effect of plastic mulch and some pre-plant herbicides on weed control and yield of transplanted tomato, an experiment was conducted in factorial arrangement as a randomized complete block design (RCBD) with three replications at Fariman in 2015. The expe More
        To evaluate the effect of plastic mulch and some pre-plant herbicides on weed control and yield of transplanted tomato, an experiment was conducted in factorial arrangement as a randomized complete block design (RCBD) with three replications at Fariman in 2015. The experimental factors including herbicide application at seven levels including no herbicide application and application of 3 and 1.5 L.ha-1 of Trifluralin, pendimethalin (stomp) and microcapsule formulation of pendimethalin (prowl) as first factor and second factor was mulch application at two levels including transparant and black plastic mulch. In addition a full season hand weeding as control treatment considered in each replication. Results indicated that using both of mulches (black and transparant) and pre-plant herbicides was controlled weeds compeletly and increased 60 percent of tomato biomass and 67.5 percent of fruit yield. Black mulch was more effective in weed control and increases tomato yield more than transparant mulch and in three date of sampling, black mulch was controled weeds compeletly. Using 3 lit ha-1 of herbicides showed the more weed control and tomato yield than 1.5 lit.ha-1 of herbicides, like using 3 lit.ha-1 of Trifluralin reduced 25 percent of weed biomass and increased 25 percent of of fruit yield. Using black plastic mulch with pre-plant herbicides showed that the highest weed control (100%) and highest tomato biomass (118 ton.ha-1) and highest tomato fruit (150 ton.ha-1) was obtained in black mulch with 3 lit.ha-1 of prowl herbicide. According to our results, we can use black plastic mulch with pre-plant herbicides for good control of weeds and earn the high transplanted tomato yield. Manuscript profile
      • Open Access Article

        2 - Evaluation of Imazetapyr herbicide efficiency for weed control in common bean (Phaseolus vulgaris L.) in Chaharmahal and Bakhtiari Province
        Delavar Behrouzi Foroud Salehi
        The effect of pre-planting application, pre-emergence and post-emergence of Imazethapyr herbicide in different rates was studied in comparison with Trifluralin, Ethalfluralin and Bentazon. Experiment was arranged in a complete randomized block design in 19 treatments an More
        The effect of pre-planting application, pre-emergence and post-emergence of Imazethapyr herbicide in different rates was studied in comparison with Trifluralin, Ethalfluralin and Bentazon. Experiment was arranged in a complete randomized block design in 19 treatments and 4 replications, at Chahartakhteh staton, Agricultural and Natural Resources Research and Education Center, Chaharmahal and Bakhtiari Province during 2016-2017. The lowest level of weeds density was observed at 15 days (2 plants/m2) and 30 days (1 plant/m2) after application of herbicides in pre-planting treatment of Imazethapyr (0.7 l/ha). Moreover, the highest level of weeds biomass reduction was observed at 15 and 30 days after herbicides application in pre-planting treatments of Imazethapyr at 0.7 and 1 l/h. The percentage of biomass reduction of weeds population was calculated more than 95% for mentioned treatments. Therefore, the pre-planting application of Imazethapyr (at the rate of 0.7 l/ha) is recommended for weeds management of bean fields, because of the lower active ingredient of Imazethapyr compare to the other treatments. Manuscript profile
      • Open Access Article

        3 - The effects of cotton and soybean selective herbicides on mycellial growth of Rhizoctonia solani causal agent of damping off
        Elham Modiri Mansoor Montazeri
        This investigation was conducted to evaluate the effect of herbicides trifluralin, ethalfluralin, alachlor and metribuzin on mycellial growth of Rhizoctonia solani anastomosis group 4, the causal agent of cotton and soybean damping off. The experiments were carried out More
        This investigation was conducted to evaluate the effect of herbicides trifluralin, ethalfluralin, alachlor and metribuzin on mycellial growth of Rhizoctonia solani anastomosis group 4, the causal agent of cotton and soybean damping off. The experiments were carried out in 2011 at Department of Weed Research, Iranian Research Institute of Plant Protection, Tehran. At first stage, growth reaction of the fungal colonies to the herbicides on PDA was studied. Then, this reaction to discs contaminated with the herbicides, compared with not using herbicide control, in two series of experiments was investigated. The results of high concentration of herbicides in PDA indicated that growth of the fungal colonies on PDA containing trifluralin at 12500 or 25000 ppm, ethalfluralin at 17500 or 35000 ppm, alachlor at 20000 or 40000 ppm was completely inhibited. R. solani growth on PDA containing metribuzin at 2500 or 5000 ppm was not completely inhibited, but this treatments, compared with control, significant reduced mycellial growth of the pathogen. The experiment at lower concentrations of the herbicides showed that alachlor, trifluralin and ethalfluralin, resprctively at  509,  318 and 445 ppm, significantly reduced the colonies growth. Among the recent treatments, the effect of alachlor was significantly more than the others. Paper discs contaminated with herbicides at three different concentration, showed no evidence of their effect on mycellial growth of the pathogen. Manuscript profile
      • Open Access Article

        4 - The Effect of Reduced Doses of Trifluralin on Control of ‎Common Lamsquarters (Chenopodium album L.) and Redroot ‎Pigweed (Amaranthus retroflexus L.) in Potato (Solanum ‎tuberosum L.) Fields
        Mohammad Taghi Alebrahim Elham ‎ Samadi kalkhoran
        To evaluate the reduced concentration effect of Trifluralin (Treflan EC 33%) on common lamsquarters (Chenopodium album L.) and redroot pigweed (Amaranthus retroflexus L.) in potato (cv. Agria) a field experiment based on randomized complete design with three replication More
        To evaluate the reduced concentration effect of Trifluralin (Treflan EC 33%) on common lamsquarters (Chenopodium album L.) and redroot pigweed (Amaranthus retroflexus L.) in potato (cv. Agria) a field experiment based on randomized complete design with three replications was carried out at the Agriculture and Natural Resources Research Station of Ardabil during 2013. Treatments were concentration of Trifluralin (0.125, 0.25, 0.5, 1, 2 and 4 Lit a.i/ha) without weed control and weeding out (as control). Sampling of weeds were performed before and after flowering of potato. Statistical analysis showed significant differences of reduced concentrations of Trifluralin on reduction of both lamsquarters and pigweed in the field. The highest reduction in percentages of weed densities, before and after flowering (91.94 and 90.34 percent, respectively) were achieved by using 4 Lit a.i/ha of Trifluralin. Application 4 Lit a.i/ha of Trifluralin at before and after flowering reduced common lamsquarters density by 87.13 and 86.04 percentages, respectively. Application 4 Lit a.i/ ha Trifluralin at befor and after flowering reduced pigweed density by more than 90 percent. Experimental results also showed that different concentrations of Trifluralin had significant effect on mean tuber weight per plant, and potato tuber yield. The highest mean weight of tuber per plant, yield per plant and potato tuber yield was obtained at 2 Lit a.i/ha Trifluralin concentration, while it was not significantly different from that of 4 Lit a.i/ ha. Generally, application of 2 and 4 Lit a.i/ha Trifluralin incereased tuber yield by 51.85 and 50.74 percents respectively. Manuscript profile
      • Open Access Article

        5 - Chemical and Mechanical Control of Soybean (Glycin max L.) Weeds
        Ebrahim Gholamalipour Alamdari Taher Erteghzadeh Abbas Biabani Ali Nakhzari Moghadam
        To evaluate effects of the various concentrations of two herbicides of the trifluralin and Imazethapyr and weeding on weeds control, yield and yield components of soybean (Glycin max L.), an experiment was carried out based on randomized complete block design with three More
        To evaluate effects of the various concentrations of two herbicides of the trifluralin and Imazethapyr and weeding on weeds control, yield and yield components of soybean (Glycin max L.), an experiment was carried out based on randomized complete block design with three replications at the Agriculture Land of Ghravolhaji Village in Kallale district of Golestan province in 2014. Treatments consisted of planting soybean under weeding, without weeding and application of trifluralin and Imazethapyr as 100% trifluralin, 75% trifluralin + 25% Imazethapyr, 50% trifluralin + 50% Imazethapyr, 25% trifluralin + 75% Imazethapyr, 100% pursuit, 100% Imazethapyr + 25% trifluralin, 25% Imazethapyr + 100% trifluralin, 100% Imazethapyr + 50% trifluralin and 50% Imazethapyr + 100% trifluralin. density of each weed, their total density and inhibition percentage were measured. Results showed that the effect of chemical weed control on all traits measured, except seed number per pot, 1000 seed weight, content of chlorophyll a and total chlorophyll, were significant. The highest leaf area, plant height, number of pods per plant, aerial plant dry weight, seed number per plant and seed weight per plant were observed in the treatment of the 100% Imazethapyr (238.67 cm2), weeding (57.69 cm), both treatments of weeding (33.10) and 25% Imazethapyr +100% trifluralin (28.3), both treatment of weeding (163.92 g) and 100%  Imazethapyr (163.70 g), weeding (67.10 seed per plant), both treatment of weeding and 100%  Imazethapyr + 50% trifluralin (10.27 seed per plant) respectively. The highest seed yield was obtained from weeding treatment (2383 kg/h). Based on the results, the highest content of protein and chlorophyll b in soybean were obtained from weeding treatment. The highest inhibition percentage of weeds was found in the additional treatment of 50% Imazethapyr + 100% trifluralin (75.19) and 100% Imazethapyr + 25% trifluralin (72.86). The lowest and highest total phenols content and proteins also were obtained in the treatment of 100% trifluralin. Although treatments mentioned above had inhibitory effects on weeds they also decreased the yield components and seed yield of the soybean. Manuscript profile