eshagh pourkarami; Mahdi Dahmardeh; mohammad galavi; issa khmmari
Abstract
In order to evaluate the effect of intercropping of Roselle (Hibiscus Sabdariffa L.) on the yield and yield components of peanut (Arachis hypogea L.) at different levels of nitrogen fertilizer in the form of split plots experiment in the form of a randomized complete block design with three replications, ...
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In order to evaluate the effect of intercropping of Roselle (Hibiscus Sabdariffa L.) on the yield and yield components of peanut (Arachis hypogea L.) at different levels of nitrogen fertilizer in the form of split plots experiment in the form of a randomized complete block design with three replications, in The research farm of Zabol University was implemented in the crop year of 2013-2014.The experimental treatments include nitrogen fertilizer levels as the main plot (0, 100, 200 and 300 kg.ha-1) and replacement series of intercropping as the sub plot included (pure Roselle, pure peanut, 50% Roselle + 50% peanut, 75% Roselle + 25% peanuts, 75% peanuts + 25% Roselle). Based on the obtained results, different levels of nitrogen and intercropping showed a significant effect on the number of seeds per plant, the number of seeds per seed, the weight of one 1000 seeds, economic yield, biological yield and harvest index. The interaction effect of experimental treatments was significant on economic, biological yield and harvest index. The highest of economic yield of peanuts (5995.33 kg. ha-1) was obtained in sole crop of peanut and consumption of 200 kg. ha-1 nitrogen fertilizer. The results showed that the highest of land equivalent ration was obtained in intercropping of 75% of peanuts plus 25% of Roselle (1.73), which indicated the usefulness of intercropping compared to sole crop planting.
Afsaneh Soltanzadeh; Ahmad Ghanbari; Esmaeel Seyedabadi; Mahdi Dahmardeh
Abstract
In order to evaluate some morphological and chemical characteristics of quinoa, a split plot experiment has been conducted in a randomized complete block design with three replications during 2019-2020 cropping season, at the Agricultural Research Station of University of Zabol, Iran. Vermicompost at ...
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In order to evaluate some morphological and chemical characteristics of quinoa, a split plot experiment has been conducted in a randomized complete block design with three replications during 2019-2020 cropping season, at the Agricultural Research Station of University of Zabol, Iran. Vermicompost at three levels (0, 5 and 10 ton/ha) has been considered the main factor and chemical fertilizer at four levels (25, 50, 75 and 100%), the sub-factor. The main effect of vermicompost is significant on morphological traits such as plant height, 1000-seed weight, biological yield, grain yield, and harvest index. Interaction of vermicompost and chemical fertilizer is significant on chemical properties, including proteins and photosynthetic pigments. Application of 10 tons of vermicompost per hectare leads to the maximum level of plant height, 1000-seed weight, biological yield, grain yield, and harvest index. Also, the highest amount of photosynthetic proteins and pigments are achieved from combined application of 10 tons/ha of vermicompost and 50% chemical fertilizer (25 kg/ha Urea+ 50 kg/ha triple superphosphate + 50 kg/ha potassium sulfate). Totally, results show the positive effects of vermicompost on the morphological and chemical properties of quinoa. It can be concluded that the combined use of chemical fertilizers and vermicompost can increase the yield of quinoa, while reducing the use of chemical fertilizers and thus reduce the environmental impacts caused by them..
mahlagha kaikha; Mahdi Dahmardeh; issa khammari; ziba soorinezami
Abstract
In order to evaluation of the spraying time and cobult nanoparticle fertilizer using chemical and green chemistry methods on morphophysiological indices of cowpea, this research was conducted in a factorial experiment in a the experiment was conducted Randomized Complete Block Design (RCBD) with three ...
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In order to evaluation of the spraying time and cobult nanoparticle fertilizer using chemical and green chemistry methods on morphophysiological indices of cowpea, this research was conducted in a factorial experiment in a the experiment was conducted Randomized Complete Block Design (RCBD) with three replications in Agricultural Research Institute University of Zabol in 2017.The experimental included 4 levels of treatments: (Cobult nanoparticles of plant origin, chemical origin, plant and chemical composition and control), as the first factor and time of spraying in 2 levels (Step 4 leaf and Step 6 leaf as the second factor). The plant density of cowpea was 20 plants/m2 and irrigation was performed twice a week. The results of analysis of variance showed that the time of foliar application and application of nano particles of chemical and plant origin had a significant effect on all studied traits. Based on the results of average comparison, the highest amount of chlorophyll a (13.25 μg/g leaf), chlorophyll b (7.50 μg/g leaf), carotenoids (3.63 μg/g leaf), as well as plant height (34.84 %), number of pods per plant (28.26%), biological yield (45.64%), economic yield (59.10) compared to control treatment, iron (0.26 ppm) and leaf protein ( (46/14 ppm) was obtained from the six-leaf stage and from the combined application of cobalt nanoparticles with chemical and plant origin. In terms of all the measured traits, it seems that the simultaneous application of cobalt nanoparticles chemically and vegetative, through improving the photosynthetic system, increasing leaf duration and photosynthesis, will lead to increased biological and economic yield.
Abbas Keshtehgar; Mahdi Dahmardeh; Behrooz Keshtegar; Ahmad Ghanbari; Issa Khammari
Abstract
To evaluate the production of mashhadi melon (Khatouni cultivar) under different management of fertilizer levels and vermicompost bed, this study has been conducted as a factorial experiment in the form of a randomized complete block design with three replications during the spring of 2020 crop year ...
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To evaluate the production of mashhadi melon (Khatouni cultivar) under different management of fertilizer levels and vermicompost bed, this study has been conducted as a factorial experiment in the form of a randomized complete block design with three replications during the spring of 2020 crop year as two separate designs in Fariman and Zahak counties. Application of fertilizers in six levels include non-use of fertilizer (control), cow manure, sheep manure, nanobiomic foliar application, silicone foliar application, and complete application of chemical fertilizer as the first factor and four different levels of vermicompost include non-use of vermicompost (control), 5, 10, and 15 tons per hectare as the second factor. Results show that the highest fruit yield, total titration, percentage of nitrogen, phosphorus, fruit potassium, and fruit flesh thickness in both Fariman and Zahak counties are obtained from nanobiomic foliar application under 15 tons per hectare of vermicompost. Also, the highest percentage of total soluble solids in Fariman county is observed jointly in the treatment of sheep manure and the treatment of chemical fertilizers and Zahak county in the treatment of non-use of fertilizer (control) under 10 tons per hectare of vermicompost. In Fariman County, results of cow manure, sheep manure, nanobiomic, silicon, and chemical fertilizers at the levels of 10 tons and 15 tons per hectare of vermicompost has not shown any significant difference. Therefore, with less consumption of vermicompost, to achieve the desired amount of yield, fruit texture characteristics, and nutrient uptake, nanobiomic foliar application under 10 tons per hectare of vermicompost is recommended for melon cultivation in Fariman County.
nazpare shohlibor rodgazi; Mehdi Dahmardeh; issa khammari; ziba sorinezami
Abstract
In order to evaluate the effect of soluble time and molybdenum nanoparticles by chemical and green chemistry on morph-physiological indices of mung bean, the present research has been conducted in a factorial experiment, in Randomized Complete Block Design (RCBD) with three replications at Agricultural ...
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In order to evaluate the effect of soluble time and molybdenum nanoparticles by chemical and green chemistry on morph-physiological indices of mung bean, the present research has been conducted in a factorial experiment, in Randomized Complete Block Design (RCBD) with three replications at Agricultural Research Institute University of Zabol in 2017. The experiment includes 4 levels of treatments: (Molybdenum nanoparticles of plant origin, chemical origin, plant and chemical composition, and control), as the primary factor and spraying time in 2 levels (Step 4 leaf and Step 6 leaf) as the secondary one. The plant density of mung bean has been 33 plants/m2 with the irrigation being performed twice a week. The maximum plant height (47.5 cm), biological yield (5287 kg ha-1), economic yield (634kg ha-1), number of seeds in pod (8), carotenoid, and chlorophyll a and b occur from Step 4-6 and the application of mixed molybdenum nanoparticles. Results from the experiment show that the highest seed protein (40%) has been obtained from plant nanoparticles as well as the 4-leaf stage. Micronutrient can be an effective management solution for production of agricultural products. The results also show that the application of chemical and vegetable molybdenum nanoparticles at 6- leaf stage increase mung bean traits.
Farideh Akbari; Mehdi Dahmardeh; Ali Morshdi; Ahmad Ghanbari; Soror Khoramdel
Abstract
In order to investigate the N uptake and N utilization efficiency and nitrogen harvest index in corn and bean intercropping under the influence of tillage systems and residues of wheat an experiment was performed using split- split plots based on a randomized complete block design with three replications ...
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In order to investigate the N uptake and N utilization efficiency and nitrogen harvest index in corn and bean intercropping under the influence of tillage systems and residues of wheat an experiment was performed using split- split plots based on a randomized complete block design with three replications in agricultural research field of Shahrekord during growing season of 2016–2017. The tillage systems with three levels (conventional, minimum, and no tillage) and four levels of crop residue (0, 30, 60, and 90% of straw yield of wheat) and five intercropping patterns including corn monoculture, bean monoculture, corn and bean ratio with 2:2, 3:1 and 1:3 were considered as main, sub and sub-sub plots, respectively. The results showed that the highest nitrogen content in seed and biomass of both crops under conditions of use of 60% of plant residues, no- tillage systems and their monocultures. Agronomic use nitrogen efficiency in intercropping was lower than their monocultures. The highest N utilization efficiency was obtained in 3: 1 and 2: 2, indicating a clear superiority of intercropping than monoculture. Therefore, intercropping corn and bean can improve the nitrogen utilization efficiency. By decreasing nitrogen fertilizer application, it can play an important role in the long-term sustainability of agro-ecosystems production.