Mohsen Bagheri Dehabadi; Hossein Moghadam; Mohammad reza Chaichi; Nasrin ziloee
Abstract
To assess the effects of bio-fertilizer and some of microelements on quantitative and qualitative characteristics of sorghum (var. Pegah), this experiment was conducted at the research farm of the University of Tehran (Karaj-Iran) in 2011. The experiment was arranged as split plot based on complete randomize ...
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To assess the effects of bio-fertilizer and some of microelements on quantitative and qualitative characteristics of sorghum (var. Pegah), this experiment was conducted at the research farm of the University of Tehran (Karaj-Iran) in 2011. The experiment was arranged as split plot based on complete randomize design block with four replications. Two levels of mycorrhiza (inoculated and non-inoculated) and three levels of foliar application of iron (zero, four and eight per thousand) along with three levels of application of zinc (zero, three and six per thousand) were allocated to main and subplots respectivly. The results indicated that inoculation with mycorrhiza and application of micronutrients had positively significant effect on dry yield, plant height, shoot weight, leaf weight, crude protein, water soluble carbohydrates and ash (p<0.01) and reduced acid detergent fiber (p<0.05). However, foliar of Fe and Zn had no significant effects on root colonization. Also, investigated factors had no significant effects on number of leaves. The treatment of mycorrhiza and foliar application of the Fe and Zn in concentrations of four and three per thousand (respectively) produced the maximum of dry yield. This treatment increased yield by 40% compared with control. Based on the obtained results, treatment of myco-Fe4Z3 can be recommended for increasing yield and improving qualitative characteristics of forage sorghum (var. Pegah) in Karaj region.
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.
Saeideh Maleki Farahani; Daryoush Mazaheri; Mohammad Reza Chaeichi
Abstract
To evaluate the effects of fertilizing and deficit irrigation regimes on some chemical properties of soil and plant, an experiment was conducted during 2007 and 2008 growing seasons. Experimental design was a split plot based on a randomized complete block design with four replications. The treatments ...
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To evaluate the effects of fertilizing and deficit irrigation regimes on some chemical properties of soil and plant, an experiment was conducted during 2007 and 2008 growing seasons. Experimental design was a split plot based on a randomized complete block design with four replications. The treatments consisted of three deficit irrigation regimes (main plots) and six soil fertilizing systems (sub-plots). The irrigation treatments were included non-stressed, medium stress and severe stress. Fertilizing systems consisted of no fertilizing as control, phosphorous and nitrogen biofertilizers, 100% chemical fertilizer, vermicompost, 50% chemical fertilizer + 50% vermicompost, and 50% chemical fertilizer + biofertilizer as the sub plots. Integrated application of chemical and organic fertilizers increased soil P more than the other fertilizing systems. Integrated fertilizers increased plant N in compare with other fertilizing systems. Fertilizers containing vermicompost had more soil organic carbon, nitrogen and phosphorus or plant N and P under water stress rather than the others. Biofertilizer increased soil and plant P content under normal irrigation.
Mina Agha Baba Dastjerdi; Majid Amini Dahaghi; Mohammad Reza Chaichi; Zeynab Bosaghzadeh
Abstract
To study the effect of different fertilization systems on forage quality and secondary metabolites ofmedicinal forage in additive intercropping of alfalfa and fennel an experiment was conducted as split plotbased on randomized complete block design with three replications at College of Agriculture, ShahedUniversity ...
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To study the effect of different fertilization systems on forage quality and secondary metabolites ofmedicinal forage in additive intercropping of alfalfa and fennel an experiment was conducted as split plotbased on randomized complete block design with three replications at College of Agriculture, ShahedUniversity in Tehran, 2011. The main plots were allocated to different levels biofertilizer and chemicalfertilizer phosphorus in four levels viz. 1. Control (no fertilizer), 2. Biofertilizer (Nitroxin,biophospherous fertilizer 2), 3. Integrated fertilizer (bio fertilizers+ 50 percent chemical fertilizer), 4.Chemical fertilizer (triple super phosphate). The subplots were allocated to different combinations of 1.Sole alfalfa, 2. Sole fennel, 3. 100 percent alfalfa+ 50 percent fennel, 4. 100 percent alfalfa+ 100 percentfennel. Results showed that the highest amount of crude protein was obtained in alfalfa+ 50 percentfennel at control treatment and the highest dry matter digestibility in sole alfalfa at integrated fertilizingsystem. The lowest percentage of essential oil was obtained in alfalfa+ 50 percent fennel at integratedfertilizing system.