List of Articles integrated weed management

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  1 - The Effect of Number of Weedings and the Type of Herbicides on Yield and Yield Components of Cotton
  Mohammad Armin Mohammad Esmaeil Kashki Mostafa Heidari
  The effect of hand weeding and the type of herbicides application on yield and yield components of cotton was investigated as factorial arrangement based on rrandomized complete block design with 3 replications in Davarzan section of Sabzevar.The factors of the study in More

  The effect of hand weeding and the type of herbicides application on yield and yield components of cotton was investigated as factorial arrangement based on rrandomized complete block design with 3 replications in Davarzan section of Sabzevar.The factors of the study included of the type of herbicide at 4 levels (soil incorporated, post emergence, incur porated soil + post emergence, and control) and weeding number at 3 levels (weedy check, once and twice hand weeding). Trifluralin (1200 gai/ha) and Trifloxysulfuron sodium (15 gai/ha with cytogate 2/1000) were selected as pre plant soil incorporated herbicides and post emergence herbicide, respectively. The result showed that twice hand weeding had the highest economic yield. There wasn’t significant difference between once and twice weeding for economic yield. Between yield components, the number of boll and reproductive branches were affected more by times of weed control, especially two times weed control. The highest yield and yield component were achieved in soil applied + plus post emergence treatment. Although post emergence application herbicide had more yield but did not control weeds effectively. Overall, applied soil + post emergence treatment plus one time hand weeding provide a good weed control and gained suitable economic yield. Manuscript profile
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  2 - Effects of Integrated Weed Management on Forage Corn (Zea mays) in Miyaneh Region, Iran
  F. Lotfi Mavi J. Daneshian A. Moradi Agdam M. Moradi Agdam
  As factorial experiment based on randomized complete block design with four replications was carried out to evaluate the effects of weed management on yield and components yield of corn silage in Miyaneh region in the summer of 2009. Treatments were cultivation (with an More

  As factorial experiment based on randomized complete block design with four replications was carried out to evaluate the effects of weed management on yield and components yield of corn silage in Miyaneh region in the summer of 2009. Treatments were cultivation (with and without), herbicides (Foramsulfuron, Nicosulfuron and 2,4-D+MCPA) and without controlling weed as control treatment. The results indicated that application of herbicides significantly influenced weeds dry weight at 1% probability level. The highest and lowest percentage loss of weeds dry weight were related to Foramsulfuron and 2,4-D+MCPA, respectively, which were significantly different from other herbicides (Nicosulfuron). Cultivation was significantly effective on weeds dry weight as compared with non cultivation treatment. The results, also, indicated that cultivation and herbicides significantly affected increasing the biological and grain yields compared to non weeds control treatment. The highest biological and grain yield increase were obtained by 59.1% and 57.2% due to cultivation treatment and by 51.8% and 58.2% due to Foramsulfuron herbicide application, respectively. The lowest biological and grain yield was obtained by application of Nicosulfuron herbicide which was statistically comparable to that of 2,4-D+MCPA herbicide treatment.  Manuscript profile
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  3 - Evaluation of two trap crops (Sesame and Flax) on Broomrape damage reduction in different of commercial Tomato varieties
  M. Rafyee مهدی Madandoust F. Sadeghi
  The various broomrape (Orobanche spp.) species are obligatory chlorophyll-lacking root parasites which cause severe damage to vegetables and other yield crops. Therefore, the effects of trap crops on Broomrape damage in different cultivars of tomato was studied using fa More

  The various broomrape (Orobanche spp.) species are obligatory chlorophyll-lacking root parasites which cause severe damage to vegetables and other yield crops. Therefore, the effects of trap crops on Broomrape damage in different cultivars of tomato was studied using factorial  analysis with a randomized complete design (RCD) and four replicates, at Islamic Azad University of Shiraz. The first factor was tomato cultivars (Falat CH, Petoldoli and Fk) and the second factor was trap crops (Sesame, Flax & control). Results indicated significant differences among different cultivars of tomato on the traits of tomato and broomrape. The results showed that using trap crops reduced 62.75 and 64.27 percentage of dry weight broomrape nods and aerial stems, respectively. The characteristics of tomato and broomrape were also affected by trap crops. The Most tolerant cultivar against broomrape was Falat CH, which showed the lowest dry weight broomrape nods (0.21 g) and aerial stems (0.20 g). Flax and sesame trap crops inhibited the broomrape growth, so the maximum tomato yield and minimum dry weight of broomrape nods was detected under these treatments. The highest dry weight of broomrape nods and aerial stems was found in control treatment whereas tomato yield was the lowest in this treatment. Manuscript profile
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  4 - Effect of integrated mechanical and chemical methods on yield and yield components of corn in Karaj region, Iran.
  Arash Roozbahani ghorban normohammadi hamid Rahimian Mashhadi mohmmadali Baghestani eskandar zand
      The study was carried out to evaluate the effect of integrated mechanical and chemical weed control aspects on yield and yield components of corn, Zea mays L., in 2005-2006 at agricultural research station of weed research department of Iranian resear More

      The study was carried out to evaluate the effect of integrated mechanical and chemical weed control aspects on yield and yield components of corn, Zea mays L., in 2005-2006 at agricultural research station of weed research department of Iranian research institute of  plant protection in Karaj region. The experiment was designed as split plot based on randomized complete block design with three replications. Factors were cultivation numbers (no cultivation or control, one time at 10 cm height of corn, and two times at 20 and 30 cm height of corn) and five chemical treatments including mixture of 1 lit. Atrazine and 5 lit. Alachlor (recommended dose), reduced doses of Atrazine and Alachlor’s mixture up to 25%, 50%, 75%, and a control. Yield and yield components including numbers of row/silk, numbers of grain/row and 100 grain weight were measured and analyzed statistically. The results showed that the effect of all treatments on all measured traits were significant. Among different mechanical treatment levels, two times applying of cultivator was better than one times cultivation and control. 75% reduced dose of Atrazine and Alachlor’s mixture and recommended dose of the herbicide were superior to the others and resulted in decrease of weed dry matter and increased yield and yield components of corn. Finally, it was recommended that mentioned integrated weed management approaches should be applied to reduce herbicide use, supress weeds and increase yield and yield components of corn in Karaj and similar regions. Manuscript profile
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  5 - Effect of crop density and application of reduced dosages of two post-emergence herbicides on broadleaf weeds biomass and yield and yield components of broomcorn (Sorghum vulgare var. technicum)
  Hamed Raeisi Jahanfar Daneshian Mohammad Ali Baghestani Soleiman Jamshidi
  To evaluate the effect of crop density and application of reduced dosage of two post­-emergence herbicides on broom yield of broomcorn, an experiment was carried out in 2011 as factorial based on a randomized complete block design with three replications in Miyaneh More

  To evaluate the effect of crop density and application of reduced dosage of two post­-emergence herbicides on broom yield of broomcorn, an experiment was carried out in 2011 as factorial based on a randomized complete block design with three replications in Miyaneh region. Treatments were crop densities of 17, 24 and 31 plant. m-2 and herbicides including 2,4-D­+­MCPA and bromoxynil­+­MCPA with recommended, 20% and 40% reduced dosages. For each crop density, a hand weeding plot were considered as control. Results showed that weed biomass was decreased with crop density increasing, and recommended dosage of bromoxynil +­ MCPA was the most effective herbicide treatments in most sampling stages. Also, increasing crop density resulted in increased leaf number and leaf, stalk and panicle dry weight. Besides, broom yield and production efforts were significantly increased with increasing plant density. The highest broom yield was obtained with application of bromoxynil­ + ­MCPA and 2,4-D­ + ­MCPA in recommended dosages. The effect of recommended and 20% decreased dosages of bromoxynil ­+ ­MCPA was similar on broom yield improvement. Regarding to the obtained results, plantin density of 31 plant.m-2 and 20% of recommended dosage of bromoxynil­ +­ MCPA application is recommended to weed control and broomcorn yield increment in Miyaneh region. Manuscript profile
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  6 - Weed management in sunflower using cover crops
  Alireza Yousefi Mohammad Anjil Eli
  In order to evaluate alternative strategies for weed management in sunflower using cover crops, an experiment was carried out as a factorial based on a randomized completely block design with three replications. Factors were cover crop type at three levels (hairy vetch, More

  In order to evaluate alternative strategies for weed management in sunflower using cover crops, an experiment was carried out as a factorial based on a randomized completely block design with three replications. Factors were cover crop type at three levels (hairy vetch, pearl millet and buckwheat) and cover crop density at four levels (0, 33, 66 and 100% of recommended density for each crop in monoculture). Hand weeding was also considered  as control. Results showed that all three cover crops had significant effect on the weeds and the weed biomass severely decreased due to suppression by cover crops. There was also a negative correlation between cover crop density and weed biomass. Planting buckwheat, hairy vetch and pearl millet resulted in up to 80, 86 and 91% decreases in weed biomass in comparison to no cover crop plots. However sunflower grain yield were reduce with increasing cover crop densities from 33 to 100% of recommended density of each cover crop in monoculture. Buckwheat at the density of 36 plant.m-2 significantly decreased the weed biomass and saved sunflower grain yield. In conclusion, planting buckwheat at the density of 36 plant.m-2 as a cover crop was recommended as a part of integrated weed management in sunflower farming because it was cost-effective and environment friendly than chemical weed control. Manuscript profile