Akram Mahdavi; Jafar Masoud Sinaki; Majid Amini dehaghi; Shahram Rezvan; Ali Damavandi
Abstract
In order to evaluate the effects of chemical, biological and nano fertilizers on the yield and quality traits (oil and protein) of sesame seeds under different irrigation regimes an experiment was conducted as a split-plot factorial based on completely randomized blocks design with three replications ...
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In order to evaluate the effects of chemical, biological and nano fertilizers on the yield and quality traits (oil and protein) of sesame seeds under different irrigation regimes an experiment was conducted as a split-plot factorial based on completely randomized blocks design with three replications at Shahed University during 2015-2016 growing seasons. Irrigation withholding levels (full irrigation (control) and irrigation withholding at 65 and 75 BBCH (codes of phonological stages that are equivalent to 50% of flowering and seed ripening respectively) were assigned as main plot and different nitrogen combinations (nitroxin, urea, and a mix of 50% nitroxin plus urea), various combinations of potassium (not used, nano-potassium foliar application (2 per thousand), irrigated use of potassium dioxide (2 L ha−1) and soil application of nano-potassium (2 kg ha−1) were allocated in the subplots. The highest number of per-plant capsules (19.26 numbers) was observed with irrigation up to 50% seed ripening and the use of urea together with the potassium nano chelate foliar application. The greatest grain yield and protein content and yield were obtained in irrigation up to 50% seed ripening in the absence of potassium fertilizer and nitroxin usage (1340.5, 276.53 kg ha−1 and 5-20%, respectively). The oil yield was utmost in irrigation up to 50% flowering and foliar application of potassium nano chelate together with the mixed system of 50% urea fertilizer plus nitroxin with average values of 47.96% and 550.46 kg ha−1, respectively. The use of nitroxin as a nano-bio-fertilizer and foliar application of chelated nano potassium in irrigation withholding conditions up to 50% grain aggregation resulted in increased grain yield (approx. 15% compared to the control) as well as improved quality of sesame seeds.
Mohammad Ghasem Jami; Amir Ghalavand; Seyed Ali Mohammad Modares Sanavy
Abstract
To decrease the use of chemical fertilizers and improving the yield and yield components of sunflower, a field experiment was conducted at the Research Farm of Tarbiat Modares University in 2014 and 2105. Three irrigation regimes (irrigation after depleting 40, 60 and 80% of soil water at field capacity ...
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To decrease the use of chemical fertilizers and improving the yield and yield components of sunflower, a field experiment was conducted at the Research Farm of Tarbiat Modares University in 2014 and 2105. Three irrigation regimes (irrigation after depleting 40, 60 and 80% of soil water at field capacity (FC)), three soil fertility systems (100% farmyard manure (35% chicken manure + 65% sheep manure), 50% farmyard manure + 50% chemical fertilizer and 100% chemical fertilizer (urea)) and three zeolite rates (0, 5 and 10 ton ha-1) were studied in a split factorial arranged in a randomized complete block design with three replications, with irrigation regimes as the main plots, and factorial combination of the other two factors as the subplots. Over two experimental years, there were significant increases in grain yield and water use efficiency by applying either 100% farmyard manure (28.2 + 14.6 ton sheep + chicken manure ha-1, respectively) or integrated fertilizer (14.1 + 7.3 ton sheep + chicken manure ha-1, respectively plus 65 kg urea ha-1) with 5 or 10 ton zeolite ha-1 under all irrigation treatments. Based on the results, irrigation after depleting 40% of soil water at FC was revealed as a most performance of all treatment combinations. The highest oil and protein concentrations of grain were obtained with zeolite application under non-stress conditions. Chemical fertilizer application increased grain protein concentration, while organic manure increased grain oil concentration.
Samira Maleki khezerlu; mehdi tajbakhsh
Abstract
In order to study the effect of some seed pretreatment on yield and grain quality characteristics of Amaranthus hypochondriacus L, an experiment was concluded using six treatments based on randomized completely block design with three replications in research field of Urmia University on 2014 cropping ...
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In order to study the effect of some seed pretreatment on yield and grain quality characteristics of Amaranthus hypochondriacus L, an experiment was concluded using six treatments based on randomized completely block design with three replications in research field of Urmia University on 2014 cropping season. Treatments were including seed priming of pigeon manure (one in 10), concentrated vaniaz (68.39 precent) (three in 1000) super micro nano chelate fertilizer (three in 1000), magnetic water, homeopathy 12x and control. The seeds were soaked in the solution of listed treatments for eight hours; thereafter, seeds were brought to the initial moisture content for 24 hours at 25◦C. Seeds were sown in the field and harvested at the maturity time. Results showed that pretreatment of magnetic water increased seed yield, biomass yield, phosphorus, oil percent, oil yield, palmitic and stearic fatty acids by 22.31, 17.71, 25.5, 20.6, 36.6, 12.7, 22.2 percent compared with control. The highest value in oleic and linoleic fatty acid was obtained for nano chelat fertilizer. The treatments created more favorable conditions than control condition due to the increasing the percentage of germination, seedling growth and establishment under field condition. According to the current study, using magnetic water and nano chelat pretreatment had positive effects on the yield and quantitative characteristics more than the other treatments.
Ghodrat Ali Talaei; Younes Sharghi; Hoeesin Zahedi; Seyed Ali Mohammad Modarres-Sanavy; Seyed Ali Alavi Asl
Abstract
To reduce the damages of water deficit stress on safflower with zeolite and chitosan, an experiment was conducted as split plot factorial in randomized complete block design with three replication at the field Research Station of agricultural Faculty of Tarbiat Modares University during the 2012 growing. ...
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To reduce the damages of water deficit stress on safflower with zeolite and chitosan, an experiment was conducted as split plot factorial in randomized complete block design with three replication at the field Research Station of agricultural Faculty of Tarbiat Modares University during the 2012 growing. Treatments were water deficit stress {(control (Irrigation after 50 percent), moderate stress (Irrigation after 65 percent) and intensive stress (Irrigation after 80 percent) discharge of available moisture}, zeolite (control and 4.5 ton hec-1) and chitosan (non sprayed, distilled water, 1 percent acetic acid, 0.05 percent chitosan and 0.5 percent chitosan). Result showed that intense stress decreased yield, half the maximum value compared to control but whit zeolite and 0.05 percent chitosan this amount was reduced to 19 percent. Oil yield increased under non-zeolite application and intensive water deficit with foliar application of 0.05 percent chitosan, about 63 percent. Application of zeolite and 0.5 percent chitosan showed the highest number of capitol that was 26 percent higher than zeolite application and non sprayed. We conclude that zeolite and chitosan application can reduce damages of water deficit stress and increase growth and yield of this plant.
Maryam Divsalar; Zeinodin Tahmasbi Sarvestani; Seyed Ali Mohammad Modares Sanavi; Aidin Hamidi
Abstract
In order to assess the performance of two soybean cultivars produced in two regions including Karaj and Moghan to drought stress at reproductive stages and also the impact of drought stress on yield and its components, oil and protein percent, an experiment was conducted as a split factorial based on ...
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In order to assess the performance of two soybean cultivars produced in two regions including Karaj and Moghan to drought stress at reproductive stages and also the impact of drought stress on yield and its components, oil and protein percent, an experiment was conducted as a split factorial based on complete randomized block design in three replications in agriculture faculty of Tarbiat Modares University during 2014. Four treatments of drought stress were exerted as complete withholding irrigation at flowering stage (R1-R3), pod formation (R3-R5), seed filling stage (R5-R7) and control (no withholding of irrigation) which were placed in main plot and other treatments were two soybean cultivars (‘Williams’ and ‘L17’) and two seed production sources (Karaj and Moghan) that were placed in sub plots. The results indicated that the effect of drought stress on pod number, 1000-seeds weight, seed yield and also oil and protein percent was significant. The highest seed yield (262.73 gram per meter square) was observed in control (no stress) and the lowest yield (162.22 gram per meter square) belonged to drought stress at pod formation stage. Also the interactions of drought stress × cultivar and drought stress × seed source were significant on grain yield. The lowest seed oil percent (18.24 percent) and the highest protein percent (37.28 percent) of seeds were obtained at seed filling stage. With considering these results, the irrigation at pod formation stage (R3-R5) is necessary for preventing the reduction of soybean seed’s yield.
leila Mottaghi; Iraj Allahdadi; Amir Hossein Shirani-rad; Gholam Abbas Akbari; Tahereh Hasanloo
Abstract
This study was conducted to analyze the effect of zeolite application on yield and yield components of rapeseed under drought conditions as a factorial-split on the based of randomized complete block design with four replications in 2011-12 in the research field of Seed and Plant Improvement Institute, ...
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This study was conducted to analyze the effect of zeolite application on yield and yield components of rapeseed under drought conditions as a factorial-split on the based of randomized complete block design with four replications in 2011-12 in the research field of Seed and Plant Improvement Institute, Karaj. The effects of zeolite levels Z0 (0) and Z10 (10 t/ha) under three drought stress levels, control (irrigation after 40%), moderate stress (irrigation after 60%) and severe stress (irrigation after 80% soil water depletion) were in main plots and four genotypes of Brassica napus (‘KR4’, ‘Eldo’ lines and ‘GKH305’, ‘Anatol’ cultivars) were in subplots. Based on the results, negative impact of drought on yield components led to a significant fall in grain and oil yield. The most negative impact of drought stress was seen in the grain number per silique. Between genotypes, ‘GKH305’ in none stress condition and ‘Anatol’ in both mild and severe stress conditions had the highest yield. According to the results, zeolite can be used in growth period or part time of drought stress.
Hossein Monjezi; Mohammad Moradi Telavat; Seyyed Ataollah Siadat; Ahmad Koochakzadeh; Hassan Hamdi
Abstract
Filter mud is a residual of sugar extraction process produced in huge volume and has high organic matter and essential elements. Regarding to these properties, it seems this material could be a useful fertilizer in crop production. To evaluate effect of sugarcane filter muds and chemical and biological ...
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Filter mud is a residual of sugar extraction process produced in huge volume and has high organic matter and essential elements. Regarding to these properties, it seems this material could be a useful fertilizer in crop production. To evaluate effect of sugarcane filter muds and chemical and biological fertilizers application on canola (Brassica napus L.) yield and some of soil properties, a factorial experiment was conducted in 2012 in experimental farm of Ramin (Mollasani) Agriculture and Natural Resources University of Khouzestan. A complete block design was used for the experiment in three replications. Different integrated treatments of filter muds and chemical fertilizers including A1: 100 percent filter muds, A2: 75 percent filter muds and 25 percent chemical fertilizers, A3: 50 percent filter muds and 50 precent chemical fertilizers, A4: 25 percent filter muds and 75 percent chemical fertilizers and A5: 100 percent chemical fertilizers were investigated as an experimental factor. Other experimental factor was biological fertilizers application (with and without biological fertilizers). The biological fertilizers investigated in this study were included nitroxin and Barvar 2. Application of filter muds had significant effects on canola yield, yield components, grain oil and protein contents. The soil organic matter and salinity also were affected by filter muds significantly. Highest canola grain yield was obtained by integration of filter muds and chemical fertilizers. Increase of filter muds caused to increase of grain oil content and decrease of nitrogen and nitrate content. On the other hand, increase of chemical fertilizers increased nitrate and nitrogen contents and decreased oil content. In addition, increase of filter muds resulted in higher soil organic matter and salinity, simultaneously.
Ali Tadayon; Shahram Torabiyan; Mahmoud Reza Tadayon
Abstract
In order to evaluate the variation of some of quantitative and qualitative traits of different varieties of linseed under different plant densities, an experiment was conducted in the research station of the Faculty of Agriculture in Shahrekord Univerity in 2009. This experiment was arranged as factorial ...
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In order to evaluate the variation of some of quantitative and qualitative traits of different varieties of linseed under different plant densities, an experiment was conducted in the research station of the Faculty of Agriculture in Shahrekord Univerity in 2009. This experiment was arranged as factorial in RCBD design with three replications. Four linseeds originated from Australia, Canada, France and Iran varieties were used as the first factor, and three plant densities of 300, 500, and 1000 plants per m2 were used as the second factor. Based on the results of this experiment, except for traits of seed number per capsule, 1000 seeds weight days to maturity and protein percent, other traits such as plant height, grain yield and oil content significantly responded to the plant density. The highest plant height and maximum grain yield at 1000 plants per m2 and the greatest amount of oil content at density of 500 plants per m2 were produced. All measured traits had significant effect in different linseed varieties. The highest plant height in Canadian linseed, he maximum grain yield, and days to maturity in Iranian linseed, the greatest amount of protein in France linseed and the maximum oil content in Canadian linseed were observed. Except for the trait of seed number per capsule, 1000 seeds weight, days to maturity, others including plant height, grain yield, percent of protein and oil content were significantly different in the interaction between density and variety. Canadian and Iranian linseed at density of 1000 plants per m2 produced maximum plant height, Iranian linseed at density of 1000 plants per m2 produced maximum grain yield and, France linseed at density of 1000 plants per m2 produced the greatest protein percent, and Canadian linseed at density of 300 plants per m2 also produced maximum oil percent. The general result in this experiment showed that, the density of 1000 plants per m2 was the best plant density and the Iranian linseed, due to great oil content and grain yield, was the most important linseed among other varieties.
Hamid Iran nejad; Mahboobeh Poshtkoohi; Zeinab Javanmardi; Reza Amiri
Volume 11, Issue 2 , November 2009, , Pages 11-17
Abstract
The performance of nine different linseed cultivars studied in a randomized complete block design (RCB) with four replications in Varamin region (Iran) in 2006. The traits were seed yield, fatty acids, protein and oil content of linseed. The difference between cultivars was significant for all traits ...
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The performance of nine different linseed cultivars studied in a randomized complete block design (RCB) with four replications in Varamin region (Iran) in 2006. The traits were seed yield, fatty acids, protein and oil content of linseed. The difference between cultivars was significant for all traits (P< 0.01). The Legina cultivar had the highest seed yield (3000 kg/ha) and linolenic acid content (45.16 percent). The palmitic acid content of RH 14/05 cultivar, oil percent and stearic acid of GOLDA cultivar, and protein content and yield of native cultivar were higher than other cultivars (p< 0.05). The RH 14/05 cultivar which was low in linolenic acid and high in oleic acid can be used as a breeding line to produce oil.