نتایج جستجو برای: application efficiency in low quarter aelq

تعداد نتایج: 17295155  

Journal: :تولید گیاهان زراعی 0

recently, biological fertilizers extensively recommended because of over application of chemical fertilizer and their effects on environment and production resources. in order to study the effect of inoculate phosphate solubilization microorganisms (psm) and plant growth promoting rhizobacteria (pgpr) on nutrient use efficiency in corn [zea mays (l.) cv. sc 604] an experiment was conducted in 2...

Journal: :پژوهش های زراعی ایران 0
مانی مجدم عادل مدحج

in order to study the effects of drought stress and nitrogen (n) levels on grain yield, yield components and water use efficiency of grain corn (sc.704), a field experiment was conducted in 2009 growing season. the experiment was split-plot based on randomized complete block design arrangement and four replicates. main plots were three irrigation levels included optimum irrigation (i1), moderat...

2016
B. C. Mecrow

Almost all electricity in the UK is generated by rotating electrical generators, and approximately half of it is used to drive electrical motors. This means that efficiency improvements to electrical machines can have a very large impact on energy consumption. The key challenges to increased efficiency in systems driven by electrical machines lie in three areas: to extend the application of var...

Many real time processes have complex, uncertain and nonlinear dynamics. Boilers are nonlinear, time varying, multi-input multi-output (MIMO) systems, whose states generally vary with operating conditions. The major problem in controlling that system is that its drum water pressure and steam flow dynamics include an integrator that results a critically stable behavior. Conventional controller p...

Journal: :علوم باغبانی 0
سمیرا متاعی مهدی تاجبخش رضا امیرنیا بابک عبدالهی مندولکانی

in order to evaluate effects of iron, zinc and manganese, and the methods of applying them on yield and yield components of sweet corn (zea mays saccharata), an experiment was performed as factorial based on randomized complete block design with four replications at the research farm of urmia university. experimental factors were micronutrient fertilizers with four levels (control, iron, zinc a...

Journal: :چغندرقند 0
عبدالحسین ضیائیان استادیار بخش تحقیقات خاک و آب، مرکز تحقیقات کشاورزی و منابع طبیعی فارس

urea is the most common form of nitrogen fertilizer used in sugar beet cultivation. urea has a high solubility and its losses are high and consequently its efficiency is low. it is supposed that urea solubility can be limited and its efficiency can be increased by using slow-release nitrogen fertilizers. by conducting an experiment in three important sugar beet cultivation areas of khorasan pro...

Journal: :تحقیقات آب و خاک ایران 0
فریبرز عباسی استاد مؤسسة تحقیقات فنی و مهندسی کشاورزی رضا بهراملو استادیار مؤسسة تحقیقات فنی و مهندسی کشاورزی اردلان ذوالفقاران مربی پژوهشی مؤسسة تحقیقات فنی و مهندسی کشاورزی نادر نادری مربی پژوهشی مؤسسة تحقیقات فنی و مهندسی کشاورزی

in this study, technical and operational issues of 45 qanats in hamadan, semnan and khorasan razavi provinces were studied and executive strategies to improve water management in qanats were recommended. 15 qanats were selected and studied in each of the provinces. discharge, quantity and quality of qanat water, geometric characteristics including longitudinal slope, length, and flow section ar...

L. Cheraghvareh R. Hajiboland

Tobacco is a salt-sensitive glycophyte crop species. In this work effect of silicone (Si) supplementation (1 mM as Na2SiO3) was studied in Nicotiana rustica L. cv. Basmas grown hydroponically in growth chamber under control, low (25 mM) and high (75 mM) NaCl concentration for two weeks. Dry matter production of leaves was depressed by salinity level as low as 25 mM and higher salt concentration...

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...

Journal: :علوم گیاهان زراعی ایران 0
ناهید جعفری دانشجوی ارشد گیلان مسعود اصفهانی دانشیار دانشگاه علیرضا فلاح استادیار موسسه تحقیقات آب و خاک غلامرضا محسن آبادی استادیار گیلان علی کافی قاسمی مربی دانشکده کشاورزی

to study the effects of simultaneous application of urea, znso4 and inoculants, (azotobacter and azospirillum), on uptake and nitrogen use efficiency in rapeseed, var. hyola308, a field experiment with split plot factorial layout based on a randomized complete block design was conducted at the research field of faculty of agricultural science, university of guilan in 2008. experimental treatmen...

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