Tayebeh Jamshidnia; tayeb sakinejad; Alireza shokuhfar; reza Dadnia; Sedekiwan Marshi
Abstract
The present two-year research (1397-1398) investigates the effect of Mycorrhizal inoculation. For this purpose, it takes the combined ratio of Auxin/Gibirlin and Ascorbic acid on the yield and yield components of corn, in the form of split factorial design in the form of randomized complete ...
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The present two-year research (1397-1398) investigates the effect of Mycorrhizal inoculation. For this purpose, it takes the combined ratio of Auxin/Gibirlin and Ascorbic acid on the yield and yield components of corn, in the form of split factorial design in the form of randomized complete blocks in three replicates in Shahid Salemi farm. It has been done north of Ahvaz city. The main factor of the treatments includeMycorrhizalfungus (Glomus intraradices species) at two levels (inoculation and non-inoculation) before planting and the secondary factor includes the ratio of Auxin hormone to gibberellin at three levels (0, 300/600, and 600/300) mg/liter and ascorbic acid at three levels (0, 100, and 200) mg/liter are applied as foliar spraying. The results show that Mycorrhiza has a significant effect on the dry weight of leaves, stems, and cobs, seed weight and yield, as well as biological traits, respectively, the highest seed yield amounting to (7410.72) kg is related to the treatment levels of Mycorrhizal inoculation, the ratio of Auxin to gibberellin is 600 mg to 300 mg and in 200 mg of ascorbic acid and the highest yield of stem dry weight (100 grams). In the triple interaction of the experimental factors in the treatment levels, there has not been any Mycorrhiza inoculation. For not using the hormonal compound and using 100 mg of ascorbic acid, the highest seed yield in the row (45.46%) has been obtained in the ratio of Auxin to gibberellin of 600 mg to 300 mg and using 200 mg of ascorbic acid. According to the positive effect of the use of experimental factors, the use of Mycorrhiza and the mentioned hormones, and ascorbic acid are recommended.
tayebe rostami; Saeideh Maleki Farahani
Abstract
In order to investigate the effect of mycorrhiza and surfactant on forage characteristics of corn (Zea mays L.) under deficit irrigation condition, a split plot factorial experiment was conducted in a randomized complete block design with three replication at the Research Farm of Agricultural College, ...
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In order to investigate the effect of mycorrhiza and surfactant on forage characteristics of corn (Zea mays L.) under deficit irrigation condition, a split plot factorial experiment was conducted in a randomized complete block design with three replication at the Research Farm of Agricultural College, Shahed University, Iran in 2016. The experimental treatments included irrigation at three levels of 30, 60 and 90 percent available soil water depilation as a main factor and inoculation with mycorrhizal fungi (Glomus etunicatum, G. intraradices and G. mossea) at two levels (inoculation and no inoculation with mycorrhizal) and treatment of surfactant solution containing two levels (Application of surfactant and non-use of surfactant solution) as sub factors. Results showed that with increasing depletion of available soil water, application of mycorrhizal fungi increased crude protein percentage (CP), water soluble carbohydrate (WSC) and acid detergent fibre (ADF), increased by 39.24, 30.64 and 39 percent respectively. Application of surfactant on percentage NDF was not significant. As deficit irrigation stress increased, dry weight of forage decreased and highest dry weight of forage (400 gr/plant) was observed under normal irrigation conditions and application of surfactant and mycorrhiza. The results also showed that by increasing the amount of available water discharge, application of surfactant and inoculation with mycorrhizal fungi increased water use efficiency 97 percent in compare to control.
Mehdi Ramezani; Seyed Mohammad Reza Ehteshami; Mohsen Sharifi; Mohammad Reza Chaichi
Abstract
In order to investigate the effect of different levels of biofertilizer inoculation and phosphorus chemical fertilizer on mineral elements absorption in forage corn SC. 540 under humidity regimes, an experiment was conducted as Line source based on a randomized completele block design with three replications ...
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In order to investigate the effect of different levels of biofertilizer inoculation and phosphorus chemical fertilizer on mineral elements absorption in forage corn SC. 540 under humidity regimes, an experiment was conducted as Line source based on a randomized completele block design with three replications during two growing seasons of 2012 and 2013. The implementation of Line source was applied four levels of irrigation (not stress, mild stress, moderate stress, severe stress). Five phosphorus levels included the application of 100 percent triple super phosphate fertilizer and without biofertilizer, 75 percent recommended chemical fertilizer with biofertilizer, 50 percent recommended chemical fertilizer with biofertilizer, 25 percent recommended chemical fertilizer with biofertilizer, biofertilizer and without chemical fertilizer, too. The results of experiment showed significant differences of fertilizer treatment in most of studied traits in the first and second of year. The highest of fresh and dry forage yield obtained to apply treatment of 100 percent triple super phosphate fertilizer and without biofertilizer that this value wasn’t statistically significant difference with 75 percent recommended chemical fertilizer and biofertilizer. The mineral elements absorption decreased with increasing of stress condition. The highest amount of absorption of phosphors recorded in 75 percent recommended chemical fertilizer with biofertilizer, although in stress condition, the highest amount of absorption of phosphor recorded in 50 percent recommended chemical fertilizer with biofertilizer.
Mehdi Ramezani; Reza Rezaei Sokht Abandani
Abstract
To determine the effects of priming and planting density on improvement of morphological and physiological traits of the two hybrid corns SC (S.C. 704) under double cropping in Sari, a split plot experiment as randomized complete block design with four replications was conducted in 2010. Treatments included ...
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To determine the effects of priming and planting density on improvement of morphological and physiological traits of the two hybrid corns SC (S.C. 704) under double cropping in Sari, a split plot experiment as randomized complete block design with four replications was conducted in 2010. Treatments included two densities of 80 and 100 thousand plants per hectare as the first factor and osmopriming of seeds of two hybrids of corn (S.C. 704), with a solution of 10% polyethylene glycol (6000 PEG), 0.5% potassium nitrate (KNO3), 2% potassium chloride (KCl), water (hydropriming) and control (without priming) were considered as the second factor. The results showed that plant height using the priming solution of 10% polyethylene glycol and 100 thousand plants per hectare density was 33 percent higher than 0.5% potassium nitrate and 2% potassium chloride with the density of 80 thousand plants per ha. Also the forage yield per hectare with the density of 100 thousand plants was 14.42% more than 80 thousand density. Best plant density and priming concentration for leaf area index (LAI), crop growth rate (CGR) and net assimilation rate (NAR) were the density of 80 thousand plants per hectare and 10% polyethylene glycol. Therefore, it is concluded that adequate forage yield (54730 kg/ha) of the hybrid corn used in this study were obtained by the density of 100 thousand plants per hectare and 10% polyethylene glycol solution.
Mohammad Ali Aboutalebian; Fatemeh Moqisai
Abstract
To evaluate the effect of on-farm seed priming and methods of zinc sulfate application on seed emergence properties, yield and yield components of two corn cultivars, an experiment was conducted as factorial in randomized complete block design with three replications during 2012 at research farm of Bu-Ali ...
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To evaluate the effect of on-farm seed priming and methods of zinc sulfate application on seed emergence properties, yield and yield components of two corn cultivars, an experiment was conducted as factorial in randomized complete block design with three replications during 2012 at research farm of Bu-Ali Sina university, Hamedan. First factor was methods of zinc sulfate application containing four levels of no-application, broadcasting in soil, banding and foliar application. Second factor included on farm primed and no primed seeds and third factor consisted of two corn hybrids (Es-sensor and Biaris). Analysis of variance showed that percentage and rate of emergence of on farm primed seeds increased about 16 and 12% respectively also emergence uniformity coefficient in primed seed while banding zinc sulfate comparing with no-primed seed and broadcasting zinc sulfate showed 74% increase. In Biaris cultivar priming increased significantly the number of kernel per ear. In two cultivars the highest 100 seeds weight was achieved of primed seed plus banding or foliar zinc sulfate application. In this study the highest grain yield was obtained of primed Biaris seed cultivar combined with zinc sulfate banding application ( 1370.42 g/m2) that was higher about 9.6% comparing with no-primed and no zinc sulfate treatment.
Mohammad Aboutalebian; Rangin Shabrandi
Abstract
To investigate the effect of on-farm seed priming and arbuscular mycorrhizal fungi in different amounts of phosphate fertilizer on emergence, yield and yield components of a semi-mid maturity corn hybrid (ES-SENSOR), an experiment was conducted at the research station of Agriculture College, Bu-Ali Sina ...
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To investigate the effect of on-farm seed priming and arbuscular mycorrhizal fungi in different amounts of phosphate fertilizer on emergence, yield and yield components of a semi-mid maturity corn hybrid (ES-SENSOR), an experiment was conducted at the research station of Agriculture College, Bu-Ali Sina University in 2012 in a factorial randomized complete block design with three replications, where the first factor was priming in two levels including control (non-primed) and priming with water and second factor was arbuscular mycorrhizal fungi (control and application of mycorrhizae) and the third factor was phosphate fertilizer application in three levels (non-use, 50 and 100 percent of recommended phosphate fertilizer). Results showed that seed priming increased seedling emergence rate by 15 percents. The highest symbiosis percentage was about 65.47 which was obtained by application of mycorrhizae and 50 percent of phosphate fertilizer recommendation. Also seed priming increased the number of grains per ear. 100 seed weight was also increased significantly by priming and inoculation with mycorrhizae at 50 percent phosphate fertilizer recommendation. In this study, seed priming increased grain yield by 22.32 percent. The highest yield rate of 1249.59 g/m2 was obtained in 50 percent phosphate application and use of mycorrhizal symbiosis. Therefore by application of mycorrhizal fungi in the direction of sustainable agriculture, phosphate fertilizer can be reduced by up to 50%.