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      • Open Access Article

        1 - Effect of Winter Planting Date on Qualitative Traits and Yield of Spring Rapeseed (Brassica napus) Cultivars by Using Zinc Spray in Karaj Region
        Majid Valipour dastenaei Amir Hossein Shiranirad Seyed Alireza Valadabadi Saeed Seifzadeh Hamid Reza Zakerin
        To study the effect of winter planting and zinc spraying on yield and yield components of canola (Brassica napus) cultivars, a factorial split plot experiment based on randomized complete block design with three replications was conducted for two years (2014-2015 and 20 More
        To study the effect of winter planting and zinc spraying on yield and yield components of canola (Brassica napus) cultivars, a factorial split plot experiment based on randomized complete block design with three replications was conducted for two years (2014-2015 and 2015-2016 cropping seasons) at the experimental farm of Seed and Plant Improvement Institute of Agricultural Research, Education and Extension Organization of Karaj, Iran.. In this experiment, winter plantings with three levels (24th February, 6th, and 16th March) and Zinc factors with two levels, including application of zinc sulfate spray and spray with pure water assigned to main plots and spring cultivars, including RGS003, Zafar, Julius, Jerry, Zabol 10, Hyola 4815 to subplots. The results of combined analyses of data showed that the effect of year, planting date, zinc spray, cultivar and planting date × cultivar interaction effects on qualitative traits (grain glycosinolate content and fatty acid percentages) in different planting dates and cultivars were significant at 1% level of probabilities. According to the results, the highest (66.89%) and lowest (66.02%) oleic acid percentages belonged to zafar and zabol10 cultivars, respectively. Planting dates × cultivar interaction effect on the glucosinolate content indicated that the lowest glucosinolate content produced by Zafar (8.313 mg.g-1) and hyola4815 (8.567 mg.g-1), when they were sown on March 16th. The results of this experiment showed that delayed planting, decreased percentages of palmitic, linoleic and oleic acids of seed oil, while increased percentages of linolenic and erousic acids and glycosinolate contents. Manuscript profile
      • Open Access Article

        2 - Evaluation of yield and yield components of grain corn under the influence of planting date and hybrid in winter cultivation
        Hamid Najafikjad Mohammad Ali Javaheri seyed zabi Ravari
        In Orzoiyeh region, water deficit is the most important environmental stress limiting plant growth and production. A field experiment was conducted over two years 2010-2011 in Orzoiyeh Research Station to determine the most suitable of planting date and hybrid for winte More
        In Orzoiyeh region, water deficit is the most important environmental stress limiting plant growth and production. A field experiment was conducted over two years 2010-2011 in Orzoiyeh Research Station to determine the most suitable of planting date and hybrid for winter cultivation of corn . This study was conducted as a split- plot in randomized complete block design with four replications. Main plots were planting date with four levels ( 3 February, 17 February, 2 March, 18 March) and sub plots were four different corn hybrids (TWC 600, TWC 647, SC 704, SC 720). Results showed that there weren’t any significant difference between planting dates for grain yield and yield components, but planting in 18 March had the highest plant height and ear diameter. Between corn hybrids, SC 720 produced highest grain yield (10.48 t ha-1). Grain yield in SC720 hybrid was 2.02 t ha-1 higher than control (SC 704). SC‌720 hybrid had the highest amounts of ear diameter and number row per ear than others. Based on these results, can be concluded that in Orzoiyeh region, cultivation of corn in the range of 3 February to 18 March is possible, but 18 march is the best planting date. As well as SC 720 as a new hybrid can be introduced in this region. Manuscript profile
      • Open Access Article

        3 - Evaluation and selection of different genotypes of sugar beet for winter cultivation in Razavi Khorasan province
        mahsa fazel mohammad azimi masoud ahmadi mohammad Armin hasan hamidy
        To evaluation and selection of different genotypes of sugar beet for winter cultivation in Razavi Khorasan province, a randomized complete block design with four replications was conducted separately in two regions (Jovin and Torbet-Jam) in 2018-19.In the Jovein region, More
        To evaluation and selection of different genotypes of sugar beet for winter cultivation in Razavi Khorasan province, a randomized complete block design with four replications was conducted separately in two regions (Jovin and Torbet-Jam) in 2018-19.In the Jovein region, 94.11 percent of the total variation in the data was explained by three components. Based on these findings, the characteristics of molasses sugar, sodium content, sugar extraction coefficient, and root yield are the most appropriate selection criteria for winter planting genotypes. Using Ward's method, cluster analysis revealed that the investigated genotypes were distributed into three clusters in both regions. FDIR19B3021 genotype in the first cluster of the Jovin region and FDIR19B4028 genotype in the Torbet-Jam region, SBSI-6 and SVZA2019-JD0402 genotypes in the second cluster as desirable genotypes for the Jovin and Torbet-Jam regions, and SVZA2019-JD0400 genotype in the third cluster. The Perfekta variety was selected as the Torbet-Jam representative for the Jovin region. The results of the experiment demonstrated that the genotypes used in the two regions are distinct, and that the increase in root impurities is a problem associated with winter cultivation, despite the fact that the root yield is maximized. The FDIR19B3021 genotype is recommended in the Jovin region, while the FDIR19B4028 genotype can be suggested in the Torbet-Jam region. Manuscript profile
      • Open Access Article

        4 - The effect of winter planting date on qualitative traits and yield of spring rapeseed (Brassica napus) cultivars in condition of zinc spraying
        majid valipour dastenaei alireza valadabady amir hossein shirani rad saeed sayfzadeh hamidreza zakerin
        In order to study the effect of winter planting and zinc spraying on yield and yield components of canola (Brassica napus) cultivars, a factorial split plot experiment was conducted in a randomized complete block design with three replications for two years (2014-2015 a More
        In order to study the effect of winter planting and zinc spraying on yield and yield components of canola (Brassica napus) cultivars, a factorial split plot experiment was conducted in a randomized complete block design with three replications for two years (2014-2015 and 2015-2016 cropping seasons) at the farm of Seed and Plant Improvement Institute Agricultural Research, Education and Extension Organization , Karaj, Iran.. In this experiment, planting dates ( 24th february, 6th, and 16th March) and Zinc factor in two levels , zinc sulfate spray application and non-application of zinc (spray with pure water) were factorial in main plots and spring cultivars including RGS003, Zafar, Julius, Jerry, Zabol 10, Hyola 4815 in subplots.The results of analysis of data showed that the effect of planting date, zinc spray, cultivar and interaction effect of planting date by cultivar on qualitative traits (grain glycosinolate content and fatty acids percentage) in different planting dates and cultivars had a significant difference at 1% level. According to the results, the highest (66.89%) and lowest (66.02%) oleic acid percentage was obtained in Zafar and zabol10 cultivars, respectively The interaction effect of planting dates by cultivar on the glucosinolate content indicated that the lowest glucosinolate content was obtained in Zafar (8.313 mg/g) and hyola4815 (8.567 mg/g) when they were sown on 16 MarchThe results of this experiment showed that delay in planting, decreased amount of palmitic acid, linoleic acid and oleic acid of seed oil, and increased percentage of linolenic acid, erosic acid and glycoinolate content Manuscript profile
      • Open Access Article

        5 - Study the Efficiency of Chemical Control of Weeds on Weed Growth and Growth Traits of Chickpea under Various Planting Dates
        Ali Khorgami Mahnaz Yarahmadi
        In order to investigate the effect of planting date and chemical control of weeds on morphological traits of chickpea in Khorramabad climate, this research was carried out in Khorramabad city in 2012-2012. The experiment was conducted as split plot experiment and was co More
        In order to investigate the effect of planting date and chemical control of weeds on morphological traits of chickpea in Khorramabad climate, this research was carried out in Khorramabad city in 2012-2012. The experiment was conducted as split plot experiment and was conducted in a randomized complete block design. The application of herbicide (H) with seven levels: (H1 (Trilfuralin herbicide, 2.1 liters per hectare before planting), H2 (herbicide podidaltine 3 liters per hectare pre-emergence), Herbicide H3 Pondimetalin at a rate of 3 liters per hectare and post-fertilization), H4 (metribuzin herbicide at a rate of 0.5 kg ha-1 and advance), H5 (2 kg per hectare herbicide and progressively), H6 (Plant isolate 1 liter / ha), H7 (uncontrolled control)} as the main cultivar and date of cultivation (P) with two levels: P1 (cultivated winter), P2 (cultivation in spring) As a sub-plot of the plan. Based on analysis of variance, plant density and dry weight of herbicides were affected by herbicide application and were significant. In general, all of the applied herbicides significantly reduced the density and dry weight of fruits per unit area. But the best treatment among them was the use of matricycin herbicide as a herbaceous control, which reduced the weed density and weed dry weight by 70% compared to weed control. According to the results, metamorphic honey beeswax had the most control on weeds and also had the least negative effect on chickpea, which caused chickpea seedlings to be higher than other treatments. Manuscript profile
      • Open Access Article

        6 - Study the Efficiency of Chemical Control of Weeds on Yield and some of Growth Traits of Chickpea under Various Planting Dates
        Mahnaz Yarahmadi Ali Khorgami
        In order to investigate the effect of planting date and chemical control of weeds on morphological traits of chickpea in Khorramabad climate, this research was carried out in Khorramabad city in 2012-2012. The experiment was conducted as split plot experiment and was co More
        In order to investigate the effect of planting date and chemical control of weeds on morphological traits of chickpea in Khorramabad climate, this research was carried out in Khorramabad city in 2012-2012. The experiment was conducted as split plot experiment and was conducted in a randomized complete block design. The application of herbicide (H) with seven levels: (H1 (Trilfuralin herbicide, 2.1 liters per hectare before planting), H2 (herbicide podidaltine 3 liters per hectare pre-emergence), Herbicide H3 Pondimetalin at a rate of 3 liters per hectare and post-fertilization), H4 (metribuzin herbicide at a rate of 0.5 kg ha-1 and advance), H5 (2 kg per hectare herbicide and progressively), H6 (Plant isolate 1 liter / ha), H7 (uncontrolled control)} as the main cultivar and date of cultivation (P) with two levels: P1 (cultivated winter), P2 (cultivation in spring) As a sub-plot of the plan. Based on analysis of variance, plant density and dry weight of herbicides were affected by herbicide application and were significant. In general, all of the applied herbicides significantly reduced the density and dry weight of fruits per unit area. But the best treatment among them was the use of matricycin herbicide as a herbaceous control, which reduced the weed density and weed dry weight by 70% compared to weed control. According to the results, metamorphic honey beeswax had the most control on weeds and also had the least negative effect on chickpea, which caused chickpea seedlings to be higher than other treatments. Manuscript profile