نتایج جستجو برای: salinity of water

تعداد نتایج: 21220079  

Journal: :فصلنامه علمی پژوهشی گیاهان دارویی 0
h naghdi badi faculty of agriculture, tarbiat modares university, tehran a sorooshzadeh faculty of agriculture, tarbiat modares university, p.o.box: 14115-336, tehran, iran m sharifi faculty of basic sciences, tarbiat modares university, tehran a ghalavand faculty of agriculture, tarbiat modares university, tehran s saadat department of soil reclamation and sustainable land management, soil and water research institute, tehran sh rezazadeh department of pharmacognosy and pharmaceutics, institute of medicinal plants, acecr, tehran

background: although borage ( borago officinalis l.) is a valuable medicinal plant, no information is available on the responses of this plant to salinity. for this reason, it is necessary to determine responses of this plant to salinity .  objective: since germination and early growth stage is one of the most critical phases of plant life under salinity condition this experiment was conducted ...

Entsar A. khatab F.A. Ali M.A. Fatahalla M.K. Hatem N.M. Malash, S. Tawfic

In a field experiment the effects of irrigation with saline drainage water (seasonal average of 4.5 dS/m) and non-saline water (0.55 dS/m) applied by two different water management strategies (cyclic or blended saline water with non-saline water in different ratios) and two different irrigation methods (drip or furrow) were studied on growth and productivity of tomato (Lycopersicon esculentum M...

ژورنال: علوم آب و خاک 2019

Since 2001, water main drainage of sugarcane farms located in the east side of Karoon River has been deviated to Shadegan lagoon. The average discharge and salinity of the drain water in spring and summer were 20 and 20.5 m3 sec-1 and 17.1 and 13.3 dS m-1, respectively. Therefore, there have been considerable changes in the lagoon water quality when compared to the time before entering the drai...

Journal: :پژوهش های حبوبات ایران 0
مرتضی گلدانی مریم جوادی احمد نظامی

introduction increasing world population is facing critically depletion of water resources, which will be along with increasing food demands to cover the human needs all over the world. therefore, water scarcity is increasingly a major limitation for increased agricultural production and food security in this century. the scarcity of qualified water, has made farmers to consider the water of ma...

Journal: :global journal of environmental science and management 2016
a.r. karbassi s. tajziehchi n. farhang adib

estuaries are well known for their potential in removing metal from fresh water to provide micro-nutrients to aquatic life. in the present investigation, we have tried to bring out the metal removal potential of estuaries during accidental spills. for this purpose artificial river water containing high concentration of mn, cu, zn, ni and pb were mixed with sea water at different salinity regime...

Journal: :آب و خاک 0
مسعود محمدی بیژن قهرمان کامران داوری حسین انصاری علی شهیدی

introduction: fao aquacrop model (raes et al., 2009a; steduto et al., 2009) is a user-friendly and practitioner oriented type of model, because it maintains an optimal balance between accuracy, robustness, and simplicity; and it requires a relatively small number of model input parameters. the fao aquacrop model predicts crop productivity, water requirement, and water use efficiency under water...

Journal: :آب و خاک 0
معصومه صالحی محمد کافی علیرضا کیانی

abstract in order to optimize the water management in agriculture in semi arid and arid conditions water-salinity function should be evaluated. in order to evaluate salinity and deficit irrigation two experiments were conducted in 2008 and 2009. kochia was grown with six levels of saline water (1.5, 7, 14, 21, 28, and 35 ds/m) and three levels of applied water (25, 75, and 125 percent of the wa...

Journal: :آب و توسعه پایدار 0
ایمان صالح علی مراد حسن لی

the current study was carried out with the aim of evaluating the effects of pressurized and furrow irrigation methods on the distribution of salinity and moisture in the soil profile. the experimental study design was a split plot layout with three irrigation method including furrow, surface drip (sd) and subsurface drip irrigation (ssd) using two water qualities, municipal effluent (0.509 ds/m...

Journal: :زیست شناسی جانوری تجربی 0
محمود نفیسی بهابادی دانشیار گروه شیلات دانشکده کشاورزی و منابع طبیعی دانشگاه خلیج فارس، بوشهر وحید مرشدی پژوهشکده خلیج فارس، دانشگاه خلیج فارس، بوشهر

abstarct at the present study effects of salinity were studied on growth and feeding performance, survival rate and blood biochemical parameters of pre on-growing rainbow trout (oncorhynchus mykiss) with initial weight 93.22±4.11 g for 60 days. after adaptation for 10 days to water salinity, 450 fish were distributed in 5 treatments and 3 replicates according to completely randomized design. be...

A.E. Unuaworho I.I. Funtua V.O. Ajibola,

Over the years, there has been an obvious pollution problem in Lagos area, Nigeria with high population of over eleven million and the near absence of waste management infrastructures. Concentrations of some pollution parameters and trace elements (temperature, pH, salinity, SO42-, NO3-, PO43-, F-, DO, BOD, COD and coliform, Cr, Co, Ni, Ag, Cd and Pb) were determined from water bodies of Isolo ...

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