نتایج جستجو برای: chemical sterilizing of soil

تعداد نتایج: 21206692  

Ahmad Ahmadian, Hesam Aryanpour, Seyed Alireza Movahedi Naeini,

Background: Cattle manure (CM) is the most common organic fertilizer used by farmers. However, its usually slow decomposition leads to the use of chemical fertilizers. Therefore, experiments on nano- and micro-sized particles of CM were conducted to evaluate the possibility of accelerating its decomposition in soil. Methods: The effects of a sole application of CM in different sizes (nano-, mi...

Journal: :علوم گیاهان زراعی ایران 0
اسفندیار فاتح محمدرضا چایی چی ابراهیم شریفی عاشورآبادی داریوش مظاهری علی اشرف جعفری

to study the effect of three soil fertilizing systems (chemical, organic, and integrated) on forage yield and quality of globe artichoke (cynara scolymus) an experiment was conducted using a randomized complete block design (rcbd) of four replications at the research farm of college of agriculture, university of tehran, karaj, iran in 2006. the treatments included 5 levels of chemical fertilize...

Journal: :تحقیقات آب و خاک ایران 0
فاطمه بابائی دانشجوی دکتری علوم خاک، گروه علوم خاک، دانشکدة کشاورزی، دانشگاه زنجان علی رضا واعظی دانشیار گروه علوم خاک، دانشکدة کشاورزی، دانشگاه زنجان مهدی طاهری عضو هیئت علمی مرکز پژوهش های کشاورزی زنجان، زنجان احسان زرین آّبادی دانشجوی سابق کارشناسی ارشد علوم خاک دانشگاه زنجان سیده فاطمه اسلامی دانشجوی سابق کارشناسی ارشد علوم خاک دانشگاه زنجان

rainfed wheat is the main source of staple food for people in the developing countries. various factors contribute to and affect the production of this crop. the aim followed in the present study was to develop a model to estimate rainfed wheat grain yield as based on physico-chemical properties of the soil. therefore, wheat grain yield and soil physico-chemical properties were separately deter...

Journal: :تحقیقات آب و خاک ایران 0
حمیدرضا اولیائی ابراهیم ادهمی عبدالکریم اجرائی مهدی نجفی قیری مجید رجائی

soil drainage conditions significantly affect the chemical properties of soil, particularly type and the extent of iron oxides. soil magnetic susceptibility (?) has a close relationship with drainage conditions. eight soil profiles, in four regions of fars province, with aquic and non-aquic soil moisture regimes were studied to determine the effect of drainage conditions on ? and on chemical fo...

Journal: :Journal of the American College of Cardiology 1998
M N Bathina S Mickelsen C Brooks J Jaramillo T Hepton F M Kusumoto

OBJECTIVES The purpose of this study was to evaluate a new technique for sterilizing nonlumen electrophysiology catheters that uses hydrogen peroxide gas plasma. BACKGROUND The reuse of electrophysiology catheters may potentially result in a significant cost savings. While ethylene oxide sterilization appears to be safe and effective from a clinical standpoint, toxic ethylene oxide residuals,...

Journal: :مدیریت اراضی 0

iran is a major producer of saffron in the world. about 255 tons of saffron is produced on 70 thousands hectares of land, of which 125 tons are exported. production is practiced on small holding, using traditional cultivation practices. one of the major problems associated with saffron cultivation is soil fertility depletion during the first cultivation period, the effects of which extends for ...

ژورنال: مرتع 2022

Background and objectives: Soils are one of the largest carbon stores in the biosphere with the highest carbon storage potential to mitigate the effects of climate change. The aim of this study was to investigate different land uses on carbon storage and other physical, chemical and biological characteristics of soil in Shahriar. For this purpose, rangelands including 26-year-old, 16-year-old a...

ژورنال: علوم آب و خاک 2012
زهرا احمدآبادی, , سپیده رحیمی آلاشتی, , مهدی قاجار سپانلو , ,

In order to investigate the effect of vermicompost on physical and chemical properties of soil, an experiment was carried out in split plot based on complete randomized block design in three replications in Sari Agricultural Sciences and Natural Resources University. The physical and chemical properties of soil included bulk density, particle density, total porosity, water holding capacity, fie...

Abbas Farmany , Hajar Merrikhpour , Hassan Parvizi Mosaed, Mehrdad Cheraghi, Sanaz Ashorlo , Soheil Sobhanardakani ,

Background:A critical environmental impact of the petroleum industry is the contamination of soil by oil and other related products which are highly toxic and exhibit molecular recalcitrance. Therefore, this study focused on investigating the total amount of petroleum hydrocarbons (TPHs) in soil of urban fuel stations in Hamedan City, Iran. Methods:Thirteen high traffic urban fuel stations ...

Journal: :مرتع و آبخیزداری 0
حمزه سعیدیان کارشناس ارشد آبخیزداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، حمیدرضا مرادی استادیار دانشکده منابع طبیعی، دانشگاه تربیت مدرس فرج ا... ترنیان senior expert of range management

using of different systems of soil plough after changing unconsciously and non-scientific of land use, other soil physical and chemical characteristics affected. this fact, especially in marginal lands and mountainous regions is more visible. this research compared with the purpose of studying land use changing on some soil physical and chemical characters like very tiny sand percent, ph, ec, c...

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