Mohammad Jabbari oranj; Hosein Moghadam; Mohammad Reza Jahansooz; Ali Ahmadi; Babak Motesharezadeh
Abstract
In order to investigate the effects of irrigation, planting date, and biofertilizers on phenological traits, yield, and some qualitative traits of quinoa as a new plant, an experiment has been conducted on a farm located in Bilehsvar region of Ardabil Province in two cropping years from 2019 to 2021 ...
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In order to investigate the effects of irrigation, planting date, and biofertilizers on phenological traits, yield, and some qualitative traits of quinoa as a new plant, an experiment has been conducted on a farm located in Bilehsvar region of Ardabil Province in two cropping years from 2019 to 2021 in split - split plot design based on a randomized complete block design with three replications. Experimental factors include irrigation at three levels, including (complete irrigation, irrigation termination in budding stage, and irrigation termination in seed filling stage) as the main factor, planting date at three levels (namely 27 July, 11 August, and 27 August) as the sub-factor, and four levels of nitrogen biofertilizer (the control, seed inoculant with Azotobacter, inoculant with Azospirillum, and inoculation with a mixture of Azotobacter and Azospirillum) as the sub-sub-factor. The results show that the use of complete irrigation with a planting date of 27 July and inoculation of Azotobacter and Azospirillum biofertilizers has increased the length of phenological stages and 1000-seed weight. In terms of harvest index, complete irrigation treatment with planting date of 27 July, and combined inoculation of biofertilizers have had the highest value, in terms of protein percentage and saponin content of seed, irrigation interruption at the budding stage with planting date of 27 July, while co-inoculation with biofertilizers has given the best results, and the highest biological yield (620 g/m2) and grain yield (304.97 g/m2) have been obtained from complete irrigation treatment with planting date of 11 August and co-inoculation of biofertilizers.
reza fatemi devin; Seyed Mohammad Bagher Hoseini; hosani moghadam; Babak Motasharezadeh
Abstract
In order to investigate the effect(s) of biologic and organic fertilizers on light consumption efficiency in growing maize-bean mixture, an experiment has been conducted in the form of split plots in a randomized complete block design with 12 treatments. Main plots, containing different fertilizer systems ...
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In order to investigate the effect(s) of biologic and organic fertilizers on light consumption efficiency in growing maize-bean mixture, an experiment has been conducted in the form of split plots in a randomized complete block design with 12 treatments. Main plots, containing different fertilizer systems in four levels, include 30 kg/ha urea, Azotobacter, vermicompost, and Azotobacter + vermicompost, and the subplots contain cultivation compound of pure maize and pure bean being 50% maize + 50% bean, 60% maize + 60% pinto bean, and 80% maize + 80% pinto bean. Results show that leaf area index, dry matter accumulation, and light consumption efficiency of maize have been significantly higher than pure culture. The highest light use efficiency is related to the combined use of Azotobacter and vermicompost in mixed culture of 80% maize + 80% pinto beans with an average of 2.29 g / MJ, which increase light use efficiency by 63%, compared to 30 kg/ha of pure culture. Also, the highest dry matter, related to the mixed culture of 60% maize + 60% pinto beans, belongs to the amount of 1728 g/m2, which increase the dry matter accumulation by 16%, compared to pure culture. In general, the combined composition of organic and biologic fertilizers in intercropping has the ability to compete with urea chemical fertilizer in terms of mechanistic indicators of plant growth analysis.
Iman Javad-zarrin; Babak Moteshare zade
Abstract
The aim of this research was to evaluate the average concentrations of micronutrients including: Copper (Cu), Iron (Fe), Manganese (Mn) and Zinc (Zn) in the shoots of different cultivars of wheat in stem elongation stage in a soil contaminated with cadmium (Cd). The treatments consisted of three levels ...
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The aim of this research was to evaluate the average concentrations of micronutrients including: Copper (Cu), Iron (Fe), Manganese (Mn) and Zinc (Zn) in the shoots of different cultivars of wheat in stem elongation stage in a soil contaminated with cadmium (Cd). The treatments consisted of three levels of Cd (0 (as control, Cd0), 40 (Cd40) and 80 (Cd80) mg Cd/kg soil) and fourteen different cultivars of wheat (‘Bahar’, ‘Alvand’, ‘Niknezhad’, ‘Pishtaz’, ‘Azadi’, ‘Shahriyar’, ‘Pishgam’, ‘Marvdasht’, ‘Parsi’, ‘Sivand’, ‘Shiraz’, ‘Omid’, ‘Roshan’ and ‘Navid’), respectively. The results showed the effect of Cd on concentrations of micronutrients were highly significant. Cu concentration was decreased in shoot of all studied cultivars, as levels of Cd were increased. Except two cultivars (‘Pishgam’ and ‘Omid’) which showed an increase in Fe concentration in Cd40 comparing with control, Fe concentration was decreased in other cultivars. Most and least Cd concentration in Cd40 was recorded by Niknezhad (7 mg/kg DW) and Parsi (2 mg/kg DW), respectively. Also, most and least Cd concentration in Cd80 was observed in ‘Pishgam’ (20 mg/kg DW) and ‘Navid’ (6 mg/kg DW). Generally, ‘Niknezhad’ and ‘Pishgam’ had the highest reliability of cadmium uptake. Also the lowest reliability of cadmium uptake was observed about ‘Parsi’ and ‘Navid’.