نتایج جستجو برای: nitrogen application

تعداد نتایج: 873494  

Journal: :علوم باغبانی 0
شهرام امیرمرادی پرویز رضوانی مقدم

abstract in order to study the effect of density and time of nitrogen application on morphological, phenological characteristics, yield and yield components of black cumin (nigella sativa l) a field experiment was conducted at chenaran in khorasan razavi province in 2005 growing season. three nitrogen fertilizer (urea) application times (1- control 2- at 4-6 leaves stage 3-preblooming 4-complet...

Journal: :حفاظت گیاهان 0
حمیدرضا محمددوست چمن آباد بهناز پورمرادکلیبر علی اصغری

abstract to study the effect of nitrogen application and 2-4-d on weed density and weed architecture in winter wheat an experiment was conducted at agricultural research site, university of mohaghegh ardabili, ardabil in 2009. treatments were two nitrogen levels (no fertilizer and 150 kgnha-1 application) with or without 2-4-d (1.5 kg ai ha-1). results showed that nitrogen application had no si...

Journal: :علوم گیاهان زراعی ایران 0
پری طوسی کهل دانشجوی سابق کارشناسی ارشد دانشکده کشاورزی دانشگاه گیلان مسعود اصفهانی دانشیار دانشکده کشاورزی دانشگاه گیلان محمد ربیعی پژوهشگر مؤسسه تحقیقات برنج کشور بابک ربیعی دانشیار دانشکده کشاورزی دانشگاه گیلان

the effect of concentration and time of supplementary nitrogen fertilizer spray application on grain yield and nitrogen use efficiency in rapeseed (hyola401) as a second crop in paddy fields were evaluated in a field experiment conducted in randomized complete block design with 3 replications at rice research institute of iran (rasht) in 2008. in this experiment two factors, concentration of so...

سیدشریفی, رئوف, نعمتی , علیرضا ,

In order to study the effects of nitrogen application rate and timing on grain yield, phyllochron and leaf appearance rate of corn (Zea mays L.), an experiment was conducted as split plot based on randomized complete block design with three replications at the Research Farm of University of Mohaghegh Ardabili, Ardabil, Iran during 2009 growing season. Nitrogen rates were arranged in main plot w...

Journal: :پژوهش های حبوبات ایران 0
رضا سلیمانی احمد اصغرزاده

in order to evaluate the efficiency of inoculation of chickpea seeds with mesorhizobium and application of nitrogen and zinc on yield and yield components of rainfed chickpea an experiment was carried out in research station of shirvan-chardavel, ilam. the experiment was conducted in randomized complete block design (rcbd) with six treatments including mesorhizobium inoculation, nitrogen (40 kg...

ژورنال: علوم آب و خاک 2011
رضا تقی‌زاده, , و رئوف سیدشریفی, ,

In order to evaluate the effects of nitrogen fertilizer levels on grain yield and nitrogen use efficiency in corn cultivars, a split plot experiment based on randomized complete block design with three replications was conducted at the Research Farm of Islamic Azad University of Ardabil during 2006-2007 cropping seasons. Factors consisted of nitrogen fertilizer at four levels (0, 80, 160 and 24...

بایبوردی, احمد, نورقلی‌پور, فریدون,

In order to optimized nitrogen fertilizer recommendation for a new safflower cultivar called “Padideh” an experiment was conducted in two regions of East Azerbaijan, Tikmehdash and Shabestar. Experimental design was a randomized complete blocks design arranged in factorial with three replications. The first factor was different nitrogen rates including 30, 60, 120 and 180 kg ha-1 nitrogen suppl...

Journal: :به زراعی کشاورزی 0
سمانه اسدی صنم دانشجوی دکتری، گروه زراعت و اصلاح نباتات، دانشکدة علوم کشاورزی، دانشگاه گیلان، رشت، ایران محسن زواره استادیار، گروه زراعت و اصلاح نباتات، دانشکدة علوم کشاورزی، دانشگاه گیلان، رشت، ایران حسن شکری واحد مربی پژوهش، بخش خاک و آب، مؤسسة تحقیقات برنج کشور، رشت، ایران پریسا شاهین رخسار مربی پژوهش، بخش فنی و مهندسی، مرکز تحقیقات کشاورزی و منابع طبیعی گیلان، رشت، ایران

a randomized complete block design with three replications was performed in rice research institute of iran, rasht in 2008, to find the effect of supplement foliar application of nitrogen and potassium on ’daylam‘ hybrid rice grain yield, its components and grain protein percentage. foliar application of 20 kg nitrogen (5 percent n) and 15 kg potassium (3 percent k2o) in different pre-anthesis ...

Journal: :پژوهش های کاربردی زراعی (زراعت سابق) 0
کامران میرزاشاهی عضو هیات علمی مرکز تحقیقات کشاورزی صفی آباد مصطفی حسین پور مرکز تحقیقات کشاورزی صفی آباد-دزفول

among crop plants, corn (zea mays l.) need a great amount of nitrogen during its growth period. an increase in the efficiency of nitrogen application not only decrease environmental pollutions, but also it,s economical. this study was conducted to determine the effect of nitrogen fertilization management on the yield and nitrogen efficiency in corn during 2006-2009 at safi-abad dezful agricultu...

ژورنال: علوم زراعی ایران 2022

Inclusion of cover crops in crop rotations has several benefits such as supplying nitrogen for the next crop. To investigate the effect of cover crops and different levels of nitrogen fertilizer on tuber yield, yield components, and different nitrogen efficiency indices of potato, a filed experiment was conducted as split plots arrangements in randomized complete block design with three replica...

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