نتایج جستجو برای: 25 nitrogen content vs and low nitrogen level 1

تعداد نتایج: 17524103  

Journal: :آب و خاک 0
ولی فیضی اصل امیر فتوت علیرضا آستارایی امیر لکزیان میراحمد موسوی شلمانی علی خراسانی

introduction: nitrogen (n) is one of the most important growth-limiting nutrients for dryland wheat. mineral nitrogen or ammonium (nh4+) and nitrate (no3−) are two common forms of inorganic nitrogen that can serve as limiting factors for plant growth. nitrogen fertilization in dryland area can increase the use of soil moisture, and improve wheat yields to some extent. many researchers have been...

Journal: :Journal of environmental sciences 2007
Rui Cao Xiao-hua Huang Qing Zhou Xiao-ying Cheng

The hydroponic culture experiments of soybean bean seedlings were conducted to investigate the effect of lanthanum (La) on nitrogen metabolism under two different levels of elevated UV-B radiation (UV-B, 280-320 nm). The whole process of nitrogen metabolism involves uptake and transport of nitrate, nitrate assimilation, ammonium assimilation, amino acid biosynthesis, and protein synthesis. Comp...

Journal: :علوم باغبانی 0
محمد علی خلج بهزاد ادریسی

tuberose (polianthes tuberosa l.) is one of the most important cut flowers in tropical and subtropical areas. this flower has forth order in cut flower and second order in bulbous plants production in iran. plant spacing and nitrogen necessity are the most important factors for tuberose quality and quantity. in this study, field experiment carried out as factorial design in randomized complete ...

Journal: :Journal of animal science 1977
K D Butler H F Hintz

A pelleted ration was fed limited or ad libiturn to two groups of seven Shetland 8month-old ponies for 117 days. During the last 56 days, gelatin was added to the diets of four animals in each of the two intake groups. Gelatin was added at levels of 30 and 90 g per 100 kg body weight for the first and second 28-day periods, respectively. Ponies fed the diet ad libitum consumed 180% more feed, h...

Thyme is a valuable plant used in medicine, perfumery and food industry. Mineral deficiencies often limit the growth of plants. Nitrogen deficiency in agricultural soils is a problem throughout the world. The present study evaluated effects of applying Fe and Zn in absorption of some important nutrients of Thymus vulgaris...

امام, یحیی, رزمجو, جمشید, صداقت, مژده,

This experiment was conducted to determine the effects of time and rate of nitrogen fertilizer (urea) application on yield and yield components and quality of sunflower (Helianthus annuus L. )cv.Euroflor. A field experiment was carried out at College of Agriculture, Shiraz University during Summer 2009. The experimental design was a factorial based on a randomized complete block design with 3 ...

Journal: :World journal of gastroenterology 2005
Chen-Hsien Lee Wan-Chun Chiu Soul-Chin Chen Chih-Hsiung Wu Sung-Ling Yeh

AIM To investigate the effect of glutamine (Gln)-containing parenteral nutrition on phagocytic activity and to elucidate the possible roles of Gln in the secretion of anabolic hormones and nitrogen balance in rats undergoing a gastrectomy. METHODS Rats with an internal jugular catheter were divided into 2 experimental groups and received total parenteral nutrition (TPN). The TPN solutions wer...

2017
Yong He Shupei Xiao Pengcheng Nie Tao Dong Fangfang Qu Lei Lin

Nitrogen is one of the important indexes to evaluate the physiological and biochemical properties of soil. The level of soil nitrogen content influences the nutrient levels of crops directly. The near infrared sensor can be used to detect the soil nitrogen content rapidly, nondestructively, and conveniently. In order to investigate the effect of the different soil water content on soil nitrogen...

Journal: :به زراعی کشاورزی 0
نرگس دولتمند شهری فارغ التحصیل کارشناسی ارشد زراعت، گروه زراعت واصلاح نباتات، دانشکده کشاورزی، دانشگاه کردستان، سنندج - ایران ایرج طهماسبی استادیار گروه زراعت واصلاح نباتات، دانشکده کشاورزی، دانشگاه کردستان، سنندج - ایران

a field experiment was conducted in order to study the effect of nitrogen fertilizer and plant density on yield and quality of maize (zea mays l.) cultivar, mv500 silage as second crop. this study was conducted in agricultural research station of kurdistan university during 2012 growing season. the experiment was laid out as split plot based on randomized complete block design with three replic...

In order to study the effects of wild mustard competition and different levels of nitrogen on effective traits of wheat yield, this research was conducted in Ahvaz, south west of Iran. The study was consisted of a split plot experiment, on the basis of Randomized Complete Blocks Design with three replications. Different levels of nitrogen (90, 150 and 210 kgN.ha-1) were assigned in the main plo...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید