نتایج جستجو برای: nitrogen density

تعداد نتایج: 523039  

Akram Feiz Abadi Mahbob Lotfi Mohammad hossien Bijeh Keshavarzi Mohammad Javad Shakouri,

Pepper is one of the nutrition demanding vegetable. In order to compare N fertilizer uptake and plant numbers per area unit, an experiment was conducted with replications. In which fertilizer was the main factor and included Ammonium nitrate in 7 levels (0, 80, 160, 240 kg /ha-1) and 40+40, 80+80, 120+120 kg/ha-1 (in 2 stages i.e. Half of these amounts appliedpre planting ...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2010
L A Martinelli L D Coletta E C Ravagnani P B Camargo J P H B Ometto S Filoso R L Victoria

Riverine nitrogen distribution is increasingly controlled by anthropogenic activities in their watersheds, regardless of spatial scale, climate, and geographical zone. Consequently, modelling efforts to predict the export of nitrogen from rivers worldwide have used attributes such as population density, land use, urbanization and sanitation. These models have greatly enhanced our understanding ...

Journal: :Proceedings of the National Academy of Sciences 1926

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1993

Journal: :علوم گیاهان زراعی ایران 0
شهاب جعفری زاده دانشجوی کارشناسی ارشد دانشگاه آزاد اسلامی واحد شوشتر عادل مدحج استادیار دانشگاه آزاد اسلامی واحد شوشتر

in order to study the effect of mallow weed competition and nitrogen (n) rates on grain yield and yield components of wheat cv. chamran, a field experiment was conducted in 2009. the experiment was designed as a split-plot with three replications and additive series. the n application rates were assigned in the main-plots (50, 100, 150 and 200 kg.n.ha-1) and sub-plots consisted of target common...

Journal: :Ecology 2006
Jes Hines J Patrick Megonigal Robert F Denno

Historically, terrestrial food web theory has been compartmentalized into interactions among aboveground or belowground communities. In this study we took a more synthetic approach to understanding food web interactions by simultaneously examining four trophic levels and investigating how nutrient (nitrogen and carbon) and detrital subsidies impact the ability of the belowground microbial commu...

Journal: :Symposium - International Astronomical Union 1993

Journal: :حفاظت گیاهان 0
فاطمه سلیمانی گودرز احمدوند بیژن سعادتیان

abstract to evaluate the effect of different levels of nitrogen fertilizer on competitive ability of canola against wild mustard interference, a split plot trial based on a randomized complete block design with 3 replications was carried out. experimental treatment were amounts of nitrogen fertilizer of urea (46% nitrogen) in 4 levels (100, 150, 200 and 250 kgn/ha) and 5 wild mustard densities ...

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