Atena Gholipur; Mehdi Ghajar sepanlu; Mohammad ali Bahmaniar
Abstract
In order to study the effect of municipal solid waste application with or without chemical fertilizer on the concentration of heavy metals in soil and rice plant, an experiment was conducted with randomized complete block design in three replications and fourteen treatments in Research Station of Sari ...
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In order to study the effect of municipal solid waste application with or without chemical fertilizer on the concentration of heavy metals in soil and rice plant, an experiment was conducted with randomized complete block design in three replications and fourteen treatments in Research Station of Sari Agricultural and Natural Resources University in 2009 and 2010. The treatments included control treatment, chemical fertilizer, 15, 30 and 45 ton/ha municipal solid waste compost and chemical fertilizer at three levels (25, 50 and 75 percent). Results indicated that applying compost for two years showed no significant effect on any of the available heavy metals in soil. However, significant increases were observed for Lead (Pb2+) in root, and Pb2+, Cd2+, Nicle and Cobalt in shoot and Cadmium (Cd2+) in grain. Meanwhile, the highest amount of heavy metals was concentrated in 45 t/ha of municipal solid waste + 75 percent chemical fertilizer treatment. Thus, using municipal solid waste compost, the amount of the heavy metals increased in soil and rice plant but their concentrations were below their toxicity limit.
Seyed Majid Mousavi; Mohammad Ali Bahmanyar; Zahra Ahmadabadi
Abstract
In order to investigate distribution status of heavy metals in cropping systems of water logging and dry farming, an experiment was conducted as split-plot arrangement based on randomized complete block design with three replications in research field of Sari Agricultural Science and Natural Resources ...
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In order to investigate distribution status of heavy metals in cropping systems of water logging and dry farming, an experiment was conducted as split-plot arrangement based on randomized complete block design with three replications in research field of Sari Agricultural Science and Natural Resources University. A paddy-soil considered for water logging system and the planted field with vegetables considered for dry farming system. Main plot (fertilizer treatments added to soil) included five treatments: 20 and 40 ton.ha-1 compost, 20 and 40 ton.ha-1 sewage sludge and control. Also, sub factor (application years) consisted three treatments comprised: one, two and three years fertilization. The results showed that in water logging system sewage sludge treatments had more influence on heavy metals accumulation in soil while, compost treatments had more influence than sewage sludge treatments in dry farming system. Also, in paddy soil the enhancement percent of available form compared to control treatment was much more than dry farming system.
zahra Ahmadabadi; Mehdi Ghajar Sepanlou; Mohammad Ali Bahmanyar
Volume 13, Issue 2 , March 2012, , Pages 1-12
Abstract
In order to investigate the effect of vermicompost (VC) application on amount of micro elements in soil and plant organs of the medicinal plant of Borage (Borago officinalis), an experiment was carried out in split plot based on complete randomized block design with three replications in the research ...
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In order to investigate the effect of vermicompost (VC) application on amount of micro elements in soil and plant organs of the medicinal plant of Borage (Borago officinalis), an experiment was carried out in split plot based on complete randomized block design with three replications in the research farm of the Sari University of Agricultural Science and Natural Resources. fertilizer treatments include two levels (20 and 40 tons per hectare) of VC, mix VC and fertilizers, fertilizers, (fertilizers include 100 kg/hac potassium sulfate, 100 kg/hc super phosphate and 150 kg/hc urea) and control (without fertilizer and vermicompost) and years of consumption: 2006, 2006 and 2008, 2006 and 2007, 2006, 2007 and 2009, 2006, 2007 and 2008 and 2006, 2007, 2008 and 2009. The results showed that fertilizer treatments had a significant effect on the rate of micro-elements in soil and plant. The years of consumption of fertilizer had a significant effect in all cases except the rate of Cu in the leaves and on the rate of Cu and Mn in petal. The interaction between the years of fertilizer consumption and fertilizer treatments on the rate of micro-elements absorbant in the soil were significantly different, where as significantly affected the Fe in the leaves and petals only. In conclusion, using vermicompost is recommended as an organic fertilizer.
Mohammad Yazdani; Hemmatollah Pirdashti; MOhammad ALi Esmaeili; MOhammad ALi Bahmanyar
Volume 11, Issue 2 , November 2009, , Pages 83-92
Abstract
In order to investigate the residual effect of different tobacco cultivars on germination and seedling growth of rapeseed, an experiment was conducted at laboratory and glasshouse during 2007 as factorial based on completely randomized design with four replications. Extracts of root and shoot from two ...
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In order to investigate the residual effect of different tobacco cultivars on germination and seedling growth of rapeseed, an experiment was conducted at laboratory and glasshouse during 2007 as factorial based on completely randomized design with four replications. Extracts of root and shoot from two different types of tobacco (Virginia and Basma) and different concentrations of extracts (0, 40 and 80%) were the treatments. Results showed that germination percentage and rate, shoot and root length in rapeseed (Hayola 401) in laboratory experiment and root and shoot length and ratio, shoot to root dry weight ratio, leaf area, seedling emergence and vigor and chlorophyll contents were significantly affected by different tobacco root and shoot extracts. According to results root extract of Virginia and shoot extract of Basma had the highest and the lowest effect in terms of mentioned traits, respectively. Among studied characters, germination rate had highly correlation with germination percentage and seedling vigor.