Mohaddese Heydarzade; Seyed MohammadReza Ehteshami; Mohammad Rabiee
Abstract
Despite the progress of the livestock industry in Iran, the production of forage plants commensurate with this development has not been considered. Therefore, this study has been conducted during 2017, with the need to produce feed for livestock and poultry and with the aim of determining the best density ...
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Despite the progress of the livestock industry in Iran, the production of forage plants commensurate with this development has not been considered. Therefore, this study has been conducted during 2017, with the need to produce feed for livestock and poultry and with the aim of determining the best density and planting date on quantitative and qualitative characteristics of Guar forage. Taking place in the Rasht Rice research Institute-station located in the Village of GilPordehsar in the Sangar city, it evaluates four planting date (May 12, May 26, June 9, and June 23) and three plant densities (200, 400 and 600 plant.ha-1) factorially in a randomized complete block design with three replications. Results show that the planting date of May 26 and the density of 600 plant.ha-1 in terms of fresh forage yield (35.02 t/ha), crude protein (19.02%), dry matter (54.35%), and carbohydrate (26.12%) are superior to other planting dates and plant density under test. The highest yield of dry forage (6.1 t/ha) and neutral detergent fiber (58.23%) has been observed on May 12 and a density of 600 plant.ha-1. The amount of crude fiber has increased with delay in planting, but the percentage of Ash is not affected by different planting dates and densities. According to the results, in order to obtain the highest quantity and quality of forage in Guilan Province, the planting date of May 26 and the density of 600 plant.ha-1 is recommended.
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.
Hossein Rezvani; Jafar Asghari; Seyed MohammadReza Ehteshami; Behnam Kamkar
Abstract
For determination of economic damage threshold of four wheat (Triticum aestivum L.) cultivars in different densities of wild mustard (Sinapis arvensis L.), experiments were conducted at Agricultural Research Station Gorgan during 2010-2012. The experimental design consisted of four randomized complete ...
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For determination of economic damage threshold of four wheat (Triticum aestivum L.) cultivars in different densities of wild mustard (Sinapis arvensis L.), experiments were conducted at Agricultural Research Station Gorgan during 2010-2012. The experimental design consisted of four randomized complete blocks in a factorial arrangement. The treatments comprised of factorial combination of wild mustard densities and wheat cultivars. Five different densities of wild mustard (zero, four, eight, 16 and 32 plants.m-2) and four wheat cultivars (‘Arta’, ‘Tajan’, ‘Mogan’ and ‘Morvarid’) were considered in all the replications. Cousens hyperbolic equation was used to describe the yield reduction due to wild mustard competition. The maximum yield reduction was associated with high densities of wild mustard and among the cultivars, ‘Arta’ and ‘Morvarid’ had the maximum and minimum yield reductions, respectively. Calculated competitive indexes indicated that ‘Morvarid’ cultivar in competition with wild mustard had a high capacity to prevent yield loss (high tolerance) and on the other hand, dry weight and seed amount of weed was also greatly reduced. Using extended Cousens hyperbolic model and Odonovan formula, economic damage threshold for wheat in two years determined in densities of 4.11, 3.68, 2.33 and 2.11 plant/m2 for ‘Morvarid’, ‘Moghan’, ‘Tajan’ and ‘Arta’ cultivars in climatic conditions of Gorgan.
Seyed MohammadReza Ehteshami; Iman Janzamin; Mahdi Ramezani; Kazem Khavazi; Behnam Zand
Abstract
In order to investigate the role of Bacillus cogulans on yield of two forage corn cultivars, an experiment carried out at Agricultural Research Center of Tehran Province during 2009-2010. The experiment design consisted of three randomized complete blocks in a factorial arrangement. Investigated treatments ...
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In order to investigate the role of Bacillus cogulans on yield of two forage corn cultivars, an experiment carried out at Agricultural Research Center of Tehran Province during 2009-2010. The experiment design consisted of three randomized complete blocks in a factorial arrangement. Investigated treatments consisted of the kind of phosphorus and cultivar. The phosphorus factor included of the application of triple super phosphate fertilizer and without seed inoculation, without fertilizer and without seed inoculation (control), seed inoculation and 100% P recommended, seed inoculation and 75% P recommended, seed inoculation and 50% P recommended, seed inoculation without fertilizer and cultivar factor included of S. C. 704 and 647. The application of 75% fertilizer and seed inoculation had the highest amount in the most of investigated characteristics. As regards forage quality, seed inoculation with %75 fertilizer showed the highest dry matter digestibility, crude protein and Water Soluble Carbohydrates, too. The present finding showed that phosphate-solubilizing microorganisms can improve crop yield.
Mona Soroori; Seyed MohammadReza Ehteshami; Mohammad Rebiyi; Kazem Khavazi
Abstract
In order to evaluate effect of Azotobacter chroococcum strains on yield, yield components and qualitative indices of winter rapeseed (Brassica napus L.), an experiment was conducted during 2009-2010 growing season at Research Institute of Rice in Rasht. The experimental design was completely randomized ...
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In order to evaluate effect of Azotobacter chroococcum strains on yield, yield components and qualitative indices of winter rapeseed (Brassica napus L.), an experiment was conducted during 2009-2010 growing season at Research Institute of Rice in Rasht. The experimental design was completely randomized block, with three replications. Investigated treatments were including control (without seed inoculation), seed inoculation with Azotobacter chroococcum strains 6, 9, 11, 12, 13, 14, 15, 16, 19, 21, 23, 25, 28, 35 and 38. Results showed that Azotobacter chroococcum significantly affected on all traits. The highest of seed oil yield and K, P, Mg content caused by A. chroococcum strain 14. A. chroococcum strain 12 caused the highest of seed yield with average of 3532.43 kg/ha that hadn’t significant difference with strains 9 and 14. As A. chroococcum strain 12 caused the highest of seed yield components and N, Ca, oil seed content. Growth promoting hormones production, N2 fixation, mineral nutrients dissolubility such as phosphorus, siderophore production and kinds of antibiotics are the effect of Azotobacter chroococcum mechanisms that seems to be using at least one of these mechanisms is increased plant yield. Generally, A. chroococcum strain 12, A. chroococcum strain 14 and A. chroococcum strain 9 had more positive effect on traits compared with other strains. Results of this experiment showed the use of A. chroococcum increases yield and qualitative characteristics of rapeseed and therefore can be used as supplementary of chemical fertilizers.