جستجوی مقالات مرتبط با کلیدواژه « نیتراژین » در نشریات گروه « زراعت »

In order to study the effect of biological fertilizer application on quantitative and qualitative traits of Goldasht spring safflower cultivar (Carthamus tinctorius L.) under low irrigation, an experiment as split plot in randomized complete blocks design with three replications was conducted in 2012 at the Agricultural Research Station of Islamic Azad University of Roudehen branch. Main plots were irrigation regime treatment consisted of four levels (optimum irrigation, low irrigation at flowering, low irrigation at seed formation, low irrigation at two stages of flowering and seed formation and biological fertilizer treatment as subplot consists of four levels: no biological fertilizer application, application of nitragin, application of seaweed extract and application both of seaweed extract and nitragin, respectively. The results showed that the effect of irrigation regime and biological fertilizer treatments on all traits were significant. The highest grain yield and yield component losses was observed in low irrigation at two stages of flowering and seed formation and the highest ones was observed in control. Also, between biological fertilizer levels, nitragin with seaweed extract produced the highest yield and yield component and application of nitragin was better than seaweed extract and the lowest treats rates were found in control treatment. In general, in this area and similar areas biological fertilizer can be used in order to reduce the side effects of low irrigation,

In order to evaluate the effects of different plant growth promoting rhizobacteria (PGPR) on yield and yield components of sesame, an experiment was conducted in the form of Randomized Complete Block Design with three replications at Research Station, Faculty of Agriculture, Ferdowsi University of Mashhad in year 2009. Treatments were: 1) Nitragin (containing of Azotobacter sp., Azospirillum sp. and Pseudomonas sp.), 2) Nitroxin (containing of Azotobacter sp. and Azospirillum sp.), 3) Super nitro plus (containing of Azospirillum sp., Bacillus sp. and Pseudomonas sp.), 4) Phosphate suloblizing bacteria (containing of Bacillus sp. and Pseudomonas sp.), 5) Bio Phosphate (containing of Bacillus sp. and Pseudomonas sp.), 6) Nitroxin + Phosphate suloblizing bacteria, 7) Nitroxin + Bio Phosphate and control. The results showed that seed yield affected by PGPR and Nitroxin + Phosphate suloblizing bacteria treatment had superior effect on seed yield compared to other treatments. Superior effect of Nitroxin + Phosphate suloblizing bacteria treatment also was shown on plant seed weight and harvest index. Nitragin, Nitroxin + Bio Phosphate, Nitroxin + Phosphate suloblizing bacteria, Bio Phosphate, Phosphate suloblizing bacteria, Nitroxin treatments increased dry weight of capsules per plant of 62, 53, 51, 36 and 30 percent compared to control, respectively. Although, the effect of PGPR was not significant on sesame seed oil content but Bio Phosphate and Nitragin treatments increased seed oil content by 1 and 1.5 percent, respectively. In general, results showed utilization of PGPR can improve seed yield and seed oil content, which can decrease dependence of sesame seed production to chemical fertilizer, decrease negative environmental impacts and as an ecofriendly inputs can help to produce crops and sustainable agriculture guidlines.

In order to investigate the effects of plant growth promoting bacteria on growth characteristic of wheat، an experiment was conducted at the Research Greenhouse، Faculty of Agriculture، Ferdowsi University of Mashhad، Iran، in year 2009. A completely randomized design based on factorial arrangement (3×6) with three replications was used. The first factor consisted of three cultivars of wheat (Chamran، Sayonez and Gaskogen) and the second one was biofertilizer types (phosphate suloblizing bacteria، biophosphore، nitroxin، nitragin، mixed and control). Results showed that the effects of biofertilizers were significant on leaf area، root volume، shoot and root length criteria. Moreover، the difference between cultivars on emergence rate، leaf area، leaf number per plant، leaf dry weight، total dry weight and leaf to root dry weight ratio، were significant. The highest and the lowest emergence rate were observed at Gascogen (0. 8 seed per 12 hour) and Chamran (0. 56 seed per 12 hour) cultivars، respectively. The interaction effects of wheat cultivars and biofertilizers were significant on all studied characteristics (emergence rate، leaf area، specific leaf area، leaf number per plant، leaf dry weight، root dry weight، total dry weight، leaf to root dry weight ratio، shoot length، root length، root to shoot length ratio، mean leaf length and root volume) unless emergence percentage. Overall، our result indicated that biofertilizers had a useful and effective function on improvement of growth characteristics of wheat.

This study was conducted to determine the application of biofertilizers, instead of chemical fertilizer, for optimal cowpea nutrition. It was performed in a factorial experiment based on Randomized Complete Block Design with three replications at Agricultural Research Center of West Azarbaijan, Iran during growing season of 2008-2009. Experimental treatments consisted of 4 rates of biofertilizers (without fertilizer , Yashil chemical fertilizer, Nitragine biofertilizer, Yashil㘫歪ࢧ) as factor A and 4 rates of nitrogenous chemical fertilizer( 0, 26.25, 52.5 and 75 kg/ha urea) as factor B. Analysis of the results showed that there were significant differences between rates of factor A (Nitragin biofertilizers Yashil chemical fertilizer) and rates of chemical fertilizers and interaction between different levels of factor(A and B) for grain yield, number of grain per pod, number of grain per plant, number of pod per plant, 1000- grain weight and harvest index at 5% level of probability. It was also revealed that the effect of Yashil㘫歪ࢧ treatment was highly positive. The results showed that application 52.5 kg/ha urea highly increased on traits. The results obtained from interaction of different levels of factor AÍB indicated that application of 52.5 kg/ha urea and Yashil Nitragin combination had the highest effects on all traits. With regard to this results, it can be said that application of biofertilizers with chemical fertilizers had maximum increase in all traits under study.

This study was conducted to determine the application of biofertilizers¡ instead of chemical fertilizer¡ for optimal cowpea nutrition. It was performed in a factorial experiment based on Randomized Complete Block Design with three replications at Agricultural Research Center of West Azarbaijan¡ Iran during growing season of 2008-2009. Experimental treatments consisted of 4 rates of biofertilizers (without fertilizer ¡ Yashil chemical fertilizer¡ Nitragine biofertilizer¡ Yashil㘫歪ࢧ) as factor A and 4 rates of nitrogenous chemical fertilizer( 0¡ 26.25¡ 52.5 and 75 kg/ha urea) as factor B. Analysis of the results showed that there were significant differences between rates of factor A (Nitragin biofertilizers Yashil chemical fertilizer) and rates of chemical fertilizers and interaction between different levels of factor(A and B) for grain yield¡ number of grain per pod¡ number of grain per plant¡ number of pod per plant¡ 1000- grain weight and harvest index at 5% level of probability. It was also revealed that the effect of Yashil㘫歪ࢧ treatment was highly positive. The results showed that application 52.5 kg/ha urea highly increased on traits. The results obtained from interaction of different levels of factor AÍB indicated that application of 52.5 kg/ha urea and Yashil Nitragin combination had the highest effects on all traits. With regard to this results¡ it can be said that application of biofertilizers with chemical fertilizers had maximum increase in all traits under study.

In order to study the effect of seed inoculation with Nitragin and different levels of nitrogen fertilizer on yield and yield components of corn (Zea mays L.) a factorial experiment based on randomized complete blocks design in three replications was performed at Islamic Azad University, the Tabriz branch. Treatments were 6 urea fertilizer levels (0, 30, 60, 90, 120, 150 kg/ha) and two levels of Nitragin (inoculated and non-inoculated seed). Results indicated that the highest number of seed per corn row and number of seed per plant were obtained from 120 kg/ha urea application. Using 150 and 120 kg/ha of urea resulted in seed yield of 10.7 and 10 T/ha respectively. Effect of Nitragin on grain yield of corn was significant. Inoculation of seed with Nitragin increased seed yield (9.50 T/ha) as compared with that of it can, thus, be concluded that bio-fertilization of corn seed by Nitrogin would improve yield similar to that of 120 kg/ha urea application.

Application of bio-fertilizers in Sustainable Agriculture perform important role at increasing of crop production and improving of soil fertility. Hence, a field experiment was performed during 2009 growing season at Agricultural Research Center of Hamedan, to study the effect of nitrogen fertilizer rates, i.e., 0, 90, 135 and 180 kg N ha-1; as CF1 to CF4, respectively, and bio-fertilizers sources i.e., without bio-fertilizer, Nitrazhin inoculation and Nitroxin inoculation; as BF1 to BF3, respectively, on yield and nitrogen use efficiency of corn. So, a factorial experiment was carried out based on randomized complete block design (RCBD) with three replications. Traits of number of grain rows/ear, grain/row, grain/ear, 1000-seed weight, grain yield, nitrogen uptake efficiency (NUPE), Agronomic nitrogen efficiency (ANE) and N-harvest index (NHI) were evaluated. Results showed that nitrogen rates had significant effects on all traits. Also, the effect of bio-fertilizer treatment on grain rows/ear, grain/row, grain/ear, grain yield, biological yield, NUPE and ANE was significant. The interaction of N rates × bio-fertilizers sources had significant effect on number of grain rows/ear, grain/ear, grain yield, biological yield and nitrogen uptake efficiency (NUPE). Maximum grain yield (956 g m-2) was achieved at CF4 × BF2 treatment. Also, the lowest grain yield (475 g m-2) belonged to CF1 × BF1 treatment. In general, with application of bio-fertilizers, there was no significant difference between CF3 and CF4 treatments for grain yield. So, it can be concluded that bio-fertilizer application with CF3 treatment, can reduce the N fertilizer up to 25% and increased yield of corn. So, it seems that, this treatment could be beneficial for corn production.