Ebrahim Amiri Articles List

List of Articles Ebrahim Amiri

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1 - Evaluation of Maize Response to Less Irrigation Management Using SWAP Model
Ebrahim Amiri Fahimeh Shirshahi

This study was conducted to evaluate the response of hybrid varieties of maize (single cross 260) under drip irrigation treatments in the Fars province in 2012 and 2013 at the Experimental Field of Islamic Azad University of Shiraz. Irrigation levels were 20, 40, 60 and More

This study was conducted to evaluate the response of hybrid varieties of maize (single cross 260) under drip irrigation treatments in the Fars province in 2012 and 2013 at the Experimental Field of Islamic Azad University of Shiraz. Irrigation levels were 20, 40, 60 and 80% deplection of moisture contents and experiment was conducted in a randomized complete block design. The triats measured were leaf area index, dry matter yield and total biomass in 2012 and the measurements were repeated in 2013 to validate the use of SWAP model. The results showed that simulated yield changes by the use of model, at different levels of irrigation levels in the farm, corresponded with the yield changes in the field. Statistical indices including correlation coefficient (greater than 0.9), t-test (greater than 0.05), the root mean square error and normalized root mean square error (RMSEn) equal to 1.9-6.9, indicate good performance for grain yield and total biomass by using the SWAP model. Manuscript profile
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2 - Rice Yield Variations as Affected by Direct Seeding and Herbicide Application
Pooya Aalaee Bazkiyaei Jafar Asghari Parasto Moradi Ebrahim Amiri

Due to the dependency of direct seeding of rice on the application of herbicide and possibility of weed resistance to herbicides, the use of mixtures of herbicides is of considerable importance. To evaluate the effectiveness of consecutive applications of some herbicide More

Due to the dependency of direct seeding of rice on the application of herbicide and possibility of weed resistance to herbicides, the use of mixtures of herbicides is of considerable importance. To evaluate the effectiveness of consecutive applications of some herbicides with lower concentrations, including Thiobencarb, Pretilachlor, Bensulfuronmethyl, Ethoxysulfuron + Anilofos, Butachlor, and Propanil, on weed density, yield and yield components of rice (Oryza sativa L. cv. Hashemi) an experiment based on a randomized complete block design with eight treatments and three replications was conducted at the Research Farm of Faculty of Agricultural Sciences, University of Guilan in 2014. The results showed that plant height, seed yield, dry matter yield, harvest index, number of tillers and number fertile florets per panicle were affected by these treatments. Tandem use of Thiobencarb (9 day before sowing), Bensulfuronmethyl (9 day after sowing) and Propanil (30 day after sowing) affected weed dry matter and weed density by 92 and 98 %, respectively. The highest number of fertile floret per panicle (71 pcs) and tillers number per plant (14 pcs) were observed in plots where Thiobencarb, Bensulfuronmethyl and Propanil were used consecutively. In this treatment, seed yield and biological yield increased by 72 and 73 percent respectively as compared with that of control. Application of Pretilachlor caused phytotoxicity, where by reduced plant height and seed yield. The highest grain yield of rice (3092 kg.ha-1) was produced by consecutive use of Thiobencarb, Bensulfuronmethyl and Propanil. This treatment was more effective in reducing density of weeds and their dry matters than of two times hand weeding. The use of Thiobencarb followed by Bensulfuronmethyl and Propanil was the most effective treatment in this expriement. Manuscript profile
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3 - Study the Effect of Interval Irrigation and Nitrogen Fertilizer on Yield and Yield Components of Maize (Case study; Golestan Province)
Yaser kordkatooli حسین عجم نوروزی Ebrahim Amiri Afshin Soltani Mohamad Reza Dadashi

In order to investigate irrigation management and the effects of different amounts of nitrogen fertilizer on hybrid corn SC704 experimental in the form of crushed plots in the form of complete randomized block design in three replications during two crop years 2015 and More

In order to investigate irrigation management and the effects of different amounts of nitrogen fertilizer on hybrid corn SC704 experimental in the form of crushed plots in the form of complete randomized block design in three replications during two crop years 2015 and 2016 in Golestan province, in Katul was done. The main factor of irrigation cycle by day in four levels including 7, 14, 21 and 28 days and the secondary factor of nitrogen fertilizer in four levels included 60, 120, 180 and 240 kg.ha-1. The results of analysis of variance showed a significant effect between irrigation cycle and nitrogen on Weigh of 1000 grains, grain yield, seed nitrogen and biomass yield. The results showed that 28 days of irrigation reduced grain yield, seed nitrogen, seed phosphate and seed potassium compared to 7 to 14 days of irrigation. The increase in nitrogen fertilizer to 180 and 240 kg.ha-1 increased the yield of the grain by affecting the biological yield and yield components seed nitrogen, seed phosphate and seed potassium. However, nitrogen consumption in higher amounts under stress conditions (21 to 28 day Interval Irrigation) not only did not have a positive effect on yield, but also reduced grain yield by 180 to 240 kg.ha-1. The highest grain yield was obtained in the combination of 7 and 14 day irrigation treatment and nitrogen level of 240 to 180 kg.ha-1 and 12209, 11416, 10147 kg.ha-1. The results of the average comparison between the two years showed that the highest number of grains per corn was 583, the Number of grains per row as 40.3 and the Weigh of 1000 grains was 138.9 grams and seed nitrogen 3.991 µg.g-1 DW in the second year. Manuscript profile
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4 - The Effect of Irrigation Regims and Humic Acid Levels on Quantitative and Qualitative Characteristics of Peanut (Arachis hypogaea L.)
Saeed Mahdavi Naser Mohammadian Roshan Majid Ashouri Ebrahim Amiri hamidreza doroudian

In order to investigate the effect of irrigation regimes and amounts of humic acid on the quantitative and qualitative characteristics of peanuts, an experiment was conducted a split in a randomized complete block design. It was performed with three replications in the More

In order to investigate the effect of irrigation regimes and amounts of humic acid on the quantitative and qualitative characteristics of peanuts, an experiment was conducted a split in a randomized complete block design. It was performed with three replications in the cropping years of 2018 and 2019 in Astana-Ashrafieh city of Guilan province. Experimental treatments included irrigation regime (rainfed and water requirement of 60, 80 and 100%) as the first factor and humic acid (without fertilizer, 3, 6 and 9 L.ha-1) as the second (secondary) factor. The results showed that the interaction of irrigation and humic acid on biological yield and pod and grain yield was significant. The highest grain yield was obtained in the irrigation treatment of 100 and 80% of water requirement and with the use of humic acid 9 L.ha-1 with an average of 2562 and 2526 kg.ha-1, respectively. Biological yield under 80 and 100% water requirement was 6714 and 6772 kg.ha-1, respectively. The highest biological yield was observed in different amounts of humic acid in treatments of 9 L.ha-1 at the amount of 7436 kg.ha-1. Pod yield in the treatment of 80 and 100% of water requirement were 2427 and 2435 kg.ha-1, respectively. The lowest and highest pod yields in different amounts of humic acid were in the treatments without fertilizer and 9 L.ha-1 with an average of 1453 and 2706 kg.ha-1, respectively. Treatment of 80% of plant water requirement and the amount of humic acid consumed at 9 L.ha-1 with an average of 745.5 kg.ha-1, had the highest rate compared to other treatments. According to the research results, the use of humic acid 9 L.ha-1 can be suggested by providing 80% of water requirement as suitable conditions for the study area. Manuscript profile

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List of Articles Ebrahim Amiri