نتایج جستجو برای: nitrogen use efficiency

تعداد نتایج: 2157301  

Journal: :تولید گیاهان زراعی 0
یعقوب حسینی استادیار مرکز تحقیقات کشاورزی و منابع طبیعی هرمزگان مهدی همایی استاد گروه خاکشناسی، دانشکده کشاورزی، دانشگاه تربیت مدرس صفورا اسدی کپورچال استادیار گروه علوم خاک، دانشکده علوم کشاورزی، دانشگاه گیلان

abstractbackground and objectives: in most saline and non-saline soils, nitrogen is the most restrictive nutrient for plant growth. in saline soils, interactive effects of salinity and soil fertility is very important from optimum production. nutrient imbalance is one of the problems with saline soils. in these circumstances, the fertilizer application may to increase osmotic effect of salt, th...

Journal: :international journal of advanced biological and biomedical research 2014
r. yazdani biouki m. bannayan aval h. sodaeeizadeh h. r. khazaei

in order to investigate the effect of urea and azocompost on economic yield, nitrogen use efficiency (nue) and radiation use efficiency (rue) of wild majoram, a factorial experiment was conducted based on randomized complete block design with three replications at yazd and mashhad, iran, during 2012-2013 growing season. four urea levels and four azocompost levels (to provide 0, 40, 80 and 120 k...

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Nitrogen fertilizer management has a special priority for safflower economic production. Increasing the efficiency of this element, in addition to increasing economic benefits, also reduces environmental pollution. Therefore, a factorial experiment was conducted in the form of statistical design of complete randomized blocks with three replications at Safiabad Agricultural and Natural Resources...

Journal: :علوم گیاهان زراعی ایران 0
محمدحسین سدری مربی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی کردستان و دانشجوی دکتری، گروه علوم خاک، دانشکدۀ کشاورزی، دانشگاه زنجان احمد گلچین استاد، گروه خاکشناسی، دانشکدۀ کشاورزی، دانشگاه زنجان ولی فیضی اصل استادیار، مؤسسۀ تحقیقات کشاورزی دیم کشور عادل سی و سه مرده دانشیار، گروه زراعت، دانشکدۀ کشاورزی، دانشگاه کردستان

in order to study the effects of rate and application time of nitrogen on grain yield of rainfed wheat, water use efficiency of rain (wue), nitrogen agronomic efficiency (nae) and soil moisture depletion (smd), one experimental farm was carried out in kurdistan province during 2012-2014. tratments were five rates of nitrogen (n0, n30, n60, n90 and n120) kg.ha-1 as urea with three application ti...

2016
Ruqing Guo Shucun Sun Biao Liu

This study is to test the effects of Bt gene introduction on the foliar water/nitrogen use efficiency in cotton. We measured leaf stomatal conductance, photosynthetic rate, and transpiration rate under light saturation condition at different stages of a conventional cultivar (zhongmian no. 16) and its counterpart Bt cultivar (zhongmian no. 30) that were cultured on three levels of fertilization...

Journal: :چغندرقند 0
سمر خیامیم کارشناس ارشد زراعت – دانشگاه تهران داریوش مظاهری عضو هیئت علمی دانشگاه تهران محمد بنایان اول عضو هیئت علمی دانشگاه فردوسی مشهد جواد گوهری عضو هیئت علمی مؤسسه تحقیقات اصلاح و تهیه بذر چغندرقند محمدرضا جهانسوز عضو هیئت علمی دانشگاه تهران

extinction coefficient (k) is an important index that shows the rate of light decrease in canopy. net biomass accumulation is linearly related to cummulative light interception. the slope of this relationship is termed radiation use efficiency. a split plot experiment within randomized complete block design with three replications was conducted in april 2001 in sugar beet research station in ka...

Journal: :بوم شناسی کشاورزی 0
سید محمد سیدی پرویز رضوانی مقدم

more nitrogen use efficiency in crops is important for maintaining and developing sustainable agriculture. in order to study the effect of different levels of mushroom compost and different resource of nitrogen on yield, yield attributes and nitrogen use efficiency of wheat (triticum aestivum l.), an experiment was conducted at faculty of agriculture, ferdowsi university of mashhad, iran, durin...

Armaghan Charkhab Mani Mojaddam,

BACKGROUND: Fertilizer management plays an important role for obtaining satisfactory yields and to increase crop productivity. Nutrient management may be achieved by the involvement of organic sources, bio fertilizers, and micro-nutrients. OBJECTIVES: Assessment effect of chemical and biological fertilizer on seed yield, its components and plant height of...

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