hossein khoshvaghti; mahdi taj bakhsh
Abstract
In order to investigate the effect of various chelated nano and amino acid fertilizers on grain yield, biological yield, harvest index, oil quantity and quality, starch content and percentage of protein in corn grain, an experiment has been conducted based on a randomized complete block design with 16 ...
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In order to investigate the effect of various chelated nano and amino acid fertilizers on grain yield, biological yield, harvest index, oil quantity and quality, starch content and percentage of protein in corn grain, an experiment has been conducted based on a randomized complete block design with 16 treatments and three replications simultaneously in Urmia University and Ajabshir during the 2017 cropping year. Results show that the highest content of starch (80.66%), protein (12.70%), and harvest index (34.60%) related to NPK nano-chelate fertilizer treatment, the highest amount of oil (4.98%), grain yield (16596 kg / ha), and biological yield (52393 kg / ha) are related to iron amino chelate and the highest weight of 100 grains (36.34 g) is related to zinc nano chelate, which are 22.03%, 30.92%, 23.66%, 25.44%, 50.81%, 33.15%, and 24.65% more than the control treatment, respectively. The use of magnesium amino chelate, micro-mix amino chelate, potassium amino chelate, and NPK nano-chelate increase the amount of saturated fatty acids more than other fertilizers, but Copper nano-chelate, phosphorus amino-chelate, pigeon, and salicylic acid fertilizers increase the content of unsaturated fatty acids by 16.04%, 16.35%, 17.44%, and 20.29%, respectively, compared to the control treatment.
Kambiz Kharazmi; Reza Amirnia; Jalal Jalilian; Mehdi Tajbaksh
Abstract
Due to the high requirement of alfalfa to water, research on the role of organic-biofertilizer and chemical fertilizers in adjustment of low irrigation stress is important, thus, this experiment was conducted as a factorial based on a randomized complete block design with three replications in Agricultural ...
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Due to the high requirement of alfalfa to water, research on the role of organic-biofertilizer and chemical fertilizers in adjustment of low irrigation stress is important, thus, this experiment was conducted as a factorial based on a randomized complete block design with three replications in Agricultural and Natural Resources Research of Khoy in two years (2015-2016). Experimental treatments included irrigation {irrigation at field capacity (control), irrigation at 80% and 60% field capacity} and various fertilizer resources at six level {Mycorrhiza, Nitroxin, Vermicompost, Chicken manure, NPK chemical fertilizer and treatment without fertilizer consumption (control)}. The results of combined analysis showed that irrigation treatment had a significant effect on forage yield, chlorophyll a, b and total chlorophyll, proline, carotenoids, soluble carbohydrates and peroxidase enzyme activity. Regarding the importance of forage production in alfalfa, the results showed that the plant treated with mycorrhiza biofertilizer under full irrigation condition had the similar forage yield as the application of chemical fertilizer, but in both low irrigation conditions, mycorrhiza increase the forage yield by 10.18% in comparison to chemical fertilizer application. Other fertilizer treatments showed different trends in irrigation levels in terms of effect on forage yield, so that under irrigation at 60% field capacity, vermicompost, chicken manure, chemical and control treatments were in a same statistical group. Therefore, considering the disadvantages of using chemical fertilizers, mycorrhiza which has ecological and environmental benefits, can be used in alfalfa cultivation.
Somayeh Karami; Hashem Hadi; Mehdi Tajbaksh; Seyed Ali Mohammad Modarres-Sanavy
Abstract
In order to study the effect of different levels of irrigation, nitrogen and zeolite onchlorophyll content, forage yield and quality of amaranth, a split plot factorial experiment was conducted as randomized complete block design with three replications at the Research Farm of Tarbiat Modarres University ...
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In order to study the effect of different levels of irrigation, nitrogen and zeolite onchlorophyll content, forage yield and quality of amaranth, a split plot factorial experiment was conducted as randomized complete block design with three replications at the Research Farm of Tarbiat Modarres University during 2013 and 2014 growing seasons. Main factor was three irrigation regimes, irrigation after depleting 40, 60 and 75 percent of soil available waterand sub factor was the combination of the two factors: nitrogen levels 0, 80, 160 and 240 kg.h-1 and zeolite levels 0 and 10 ton.h-1. Results showed that increasing irrigation intervals, especially irrigation after depleting 75% of available water, decreased chlorophyll (37%), forage yield (40%), digestible dry matter (18%), crude protein (17%) and ash (16%) but increased neutral detergent fiber (16%) and acid detergent fiber (7%) compared to control irrigation treatments. Zeolite application under water deficit stress conditions increased chlorophyll, forage yield, digestible dry matter, crude protein and ash, and reduced NDF and ADF. Nitrogen consumption more than 80 kg.h-1 had no significant effect on forage dry yield and quality under soil water deficit conditions and application of zeolite; Therefore, Nitrogen application (80 kg.h-1) was sufficient to obtain suitable forage yield and quality of the amaranth with zeolite application.
S. Javad Talebzadeh; Hashem Hadi; Reza Aminia; Mehdi Tajbakhsh; Mohammad Rezaie
Abstract
In order to evaluation the pattern of assimilates distribution to seed under late season drought stress, 11 promising lines of winter wheat along with Orum, Zareh, Mihan, Zarrin and Pishgam cultivars were evaluated in two levels of irrigation (full irrigation and cutting irrigation from flowering to ...
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In order to evaluation the pattern of assimilates distribution to seed under late season drought stress, 11 promising lines of winter wheat along with Orum, Zareh, Mihan, Zarrin and Pishgam cultivars were evaluated in two levels of irrigation (full irrigation and cutting irrigation from flowering to maturity) at the Agricultural Research Station of Miandoab during 2013-2015 growing seasons. Experiments were conducted in split plot based on randomized complete block design with three replications. Results showed that water deficit stress significantly increased remobilization rate, contribution of remobilization and source restriction and decreased the amount of spike weight, peduncle weight, sink restriction by removing leaves other than flag leaf, sink restrictions by removing flag leaf, grain yield and harvest index, so that terminal water deficit stress increased remobilization by 45.45% and the total yield contribution of remobilization of 18.30% in normal conditions increased to 43.33% under stress conditions. Among the genotypes, ‘Zarrin’ and ‘Mihan’ under normal moisture conditions and ‘Mihan’ genotype under terminal drought stress conditions produced the highest grain yield. In this study under terminal drought stress conditions, there were significant positive correlations between grain yield with remobilization rate and contribution of remobilization. It can be concluded that the varieties and genotypes afforded adequate remobilization and contribution of remobilization in grain yield in both conditions are appropriate for cultivation in optimal conditions, as well as areas that are faced with terminal water deficit stress.
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.
Roya Karimi; Hashem Hadi; Mehdi Tajbakhsh Shishavan
Abstract
According to the global water shortage problem, the exploring for reducing its harmful effects is very important. This experiment was conducted as split plots method based on randomized complete block design with three replicates in Urmia University research field during growing season of 2013-14. Water ...
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According to the global water shortage problem, the exploring for reducing its harmful effects is very important. This experiment was conducted as split plots method based on randomized complete block design with three replicates in Urmia University research field during growing season of 2013-14. Water deficit stress as main plot consisted of three levels (irrigation when soil moisture reached 90, 70 and 50 percent of soil field capacity) and foliar applications (at 5-6 leaf stage two times with an interval of three days) as sub plot with five levels including: no foliar application (control), foliar application of salicylic acid (0.5 and 1 millimolar) and zinc sulphate (300 and 3000 milligram per liter). The results showed that the interaction effect of foliar application and water deficit significantly influenced photosynthetic pigments (except total chlorophyll content) and relative water content. The main effects of foliar application and water deficit were significant on leaves number, dry weight of leaves and stems, forage yield per square meter, electrolyte leakage and leaf area index. Severe Water deficit significantly decreased dry matter yield by 21.11 percent relative to normal irrigation. The maximum forage dry matter yield with average of 1571.53 gram per square meter were produced by both foliar application of zinc sulphate 3000 milligram per liter and salicylic acid 0.5 millimolar, which not only compensate for spraying costs but also lead to an acceptable increase in farmers' income. Therefore they could be recommended for farmers.
Esmaeil Rezaei-chiyaneh; Oroj valizadegan; Mahdi Tajbakhsh; Abel Dabbagh mohammadi; Vahid Rimaz
Abstract
A field experiment was conducted based on randomized complete block design with three replications at the Agricultural Research Station of Payamenoor University of Nagadeh, Iran during growing reason of 2009-2010. Treatments included bean and dill monoculture, row intercropping (one row of dill + one ...
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A field experiment was conducted based on randomized complete block design with three replications at the Agricultural Research Station of Payamenoor University of Nagadeh, Iran during growing reason of 2009-2010. Treatments included bean and dill monoculture, row intercropping (one row of dill + one row of bean), strip intercropping (two rows of bean+ four rows of dill and four rows of bean+ two rows of dill) and intra- row intercropping (50% dill+ 50% bean). The results showed that the highest and the lowest grain yield and biological yield of bean were achieved in row intercropping and intra- row intercropping (50% dill+ 50% bean), respectively. The plants were planted as replacement method. The highest grain yield (1630 kg/ha) and biological yield (3593 kg/ha) of bean were obtained at row intercropping and the lowest grain yield (414 kg/ha) and biological yield (870 kg/ha) of bean were achieved in intra- row intercropping, respectively. The results showed that the maximum grain yield (340 kg/ha) and biological yield (1926 kg/ha) of dill were obtained at monoculture and the minimum grain yield (340 kg/ha) and biological yield (1926 kg/ha) of dill were achieved in strip intercropping (four rows of bean+ two rows of dill intercropping), respectively. The highest essential oil percentage and essential oil yield were obtained by row intercropping, compared with other treatments. The highest (1.9) and the lowest LER (0.80) values were obtained from row intercropping and intra- row intercropping patterns, respectively. The maximum population of pest obtained under monoculture, while the minimum population of biological predators was observed under intra- row intercropping, respectively.