نتایج جستجو برای: due to water deficit

تعداد نتایج: 10813236  

Journal: :به نژادی گیاهان زراعی و باغی 0
یاور درگاهی دانشجوی کارشناسی ارشد اصلاح نباتات، گروه زراعت و اصلاح نباتات، دانشکدۀ علوم کشاورزی، دانشگاه محقق اردبیلی، ایران علی اصغری دانشیار رشتۀ اصلاح نباتات، گروه زراعت و اصلاح نباتات، دانشکدۀ علوم کشاورزی، دانشگاه محقق اردبیلی، ایران علی رسول زاده دانشیار رشتۀ علوم آب، گروه علوم آب، دانشکدۀ فناوری کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، ایران خدیجه آقایی فرد دانشجوی کارشناسی ارشد زراعت، گروه زراعت و اصلاح نباتات، دانشکدۀ علوم کشاورزی، دانشگاه محقق اردبیلی، ایران مریم احمدیان کارشناس ارشد علوم گیاهی، دانشگاه تبریز، ایران

drought stress is one of the important environmental factors reducing grain yield of plants in arid and semiarid regions. study the effect of water deficit stress on yield, water use efficiency and harvest index of sesame varieties, this experiment was conducted as a split plot based on a randomized complete block design with three replications, at agriculture and natural resources research cen...

ژورنال: علوم آب و خاک 2010
سپهری , علی , کریمی کاخکی , مصطفی ,

In order to study the effect of deficit irrigation at reproductive growth stages on water use efficiency and drought tolerance of four sunflower cultivars, including Azargol, Allstar, Alison and Euroflor, an experiment was conducted during 2007 growing season at experimental field of Agricultural Faculty of Bu-Ali Sina University, Hamadan, Iran. The experiment was a split plot based on randomiz...

Journal: :اقتصاد و توسعه کشاورزی 0
ابوذر پرهیزکاری محمود صبوحی سامان ضیائی

in the recent decades, due to water shortage problems, most countries have adopted their new policies from water supply management to water demand management . the main objective of the present study is a simulation of water market in order to determine the role of market in the balance between water supply and water demand and to analysis impacts of irrigation water sharing policies on the cro...

ژورنال: علوم آب و خاک 2008
پایمزد, شهلا, مرید, سعید ,

  Application of meteorological indicators has extensive use in drought monitoring. However, hydrological indicators can also play an effective role in this task. In this research, one of the rare approaches in drought monitoring with hydrological indicators namely Chang method has been applied and assessed for the Tehran basin using daily time step. The results have been compared with the uniq...

Journal: :The Journal of experimental biology 2016
Bhawna Kalra Ravi Parkash

Seasonally varying populations of ectothermic insect taxa from a given locality are expected to cope with simultaneous changes in temperature and humidity through phenotypic plasticity. Accordingly, we investigated the effect of saturation deficit on resistance to desiccation in wild-caught flies from four seasons (spring, summer, rainy and autumn) and corresponding flies reared in the laborato...

2001
Elizabeth Ann Bray

Drought, a period of abnormally dry weather, results in soil-water deficit and subsequently plant-water deficit. The lack ofwater in the environment constitutes a stresswhen it induces an injury in the plant. Water deficit in the plant disrupts many cellular and whole plant functions, having a negative impact on plant growth and reproduction. Crop yields are reduced by 69% on average when plant...

Behzad Sorkhi, Soleiman Mohammadi

With the aim of understanding and identifying the traits which can be used as the suitable criteria for quick screening of the water deficit tolerant barley genotypes, an experiment based on randomized complete blocks design with three replications was conducted during two years to evaluate the biochemical responses of 20 barley genotypes to full irrigation and terminal water stress in the fie...

پایمزد, شهلا, مرید, سعید ,

  Application of meteorological indicators has extensive use in drought monitoring. However, hydrological indicators can also play an effective role in this task. In this research, one of the rare approaches in drought monitoring with hydrological indicators namely Chang method has been applied and assessed for the Tehran basin using daily time step. The results have been compared with the uniq...

Journal: :desert 0
h. sarhadi islamic azad university of takestan, qazvin, iran j. daneshian agricultural research, education and extension organization, qazvin, iran s.a. valadabadi islamic azad university of takestan, qazvin, iran h. heidari sharafabad professor, science and research branch, islamic azad university, tehran, iran gh.r. afsharmanesh research, education and natural resources center, southern kerman, iran

for investigation deficit irrigation and nitrogen application effect on nutrients uptake of henna ecotypes, this research was conducted in the form of split-split-plot on the basis of randomized complete block design with four replications in the research field of islamic azad university, jiroft, iran in 2013-2014. the main, sub and sub-sub plot were deficit irrigation (100, 75 and 50% of crop ...

ژورنال: علوم آب و خاک 1999
آبسالان, شکراله, موسوی, سیدفرهاد, مصطفی زاده, بهروز ,

This study aims to evaluate the present management of border irrigation systems applied to wheat, alfalfa and sugar-beet farms in Boyer-Ahmad and Gachsaran cities in Kohgiloyeh and Boyer-Ahmad Province. Experimental farms included 8 alfalfa farms, 5 wheat farms and 5 sugar-beet farms. The experiments were conducted at different growth stages of plants and customary borders with prevalent dimens...

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