نتایج جستجو برای: nitrogen utilization

تعداد نتایج: 236571  

2018
Siobhan A Turner Qinxi Ma Mihaela Ola Kontxi Martinez de San Vicente Geraldine Butler

Fungi can use a wide variety of nitrogen sources. In the absence of preferred sources such as ammonium, glutamate, and glutamine, secondary sources, including most other amino acids, are used. Expression of the nitrogen utilization pathways is very strongly controlled at the transcriptional level. Here, we investigated the regulation of nitrogen utilization in the pathogenic yeast Candida parap...

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...

2010
Matthew M. Mills Kevin R. Arrigo

The elemental stoichiometry of sea water and particulate organic matter is remarkably similar. This observation led Redfield to hypothesize that the oceanic ratio of nitrate to phosphate is controlled by the remineralization of phytoplankton biomass1. The Redfield ratio is used universally to quantitatively link the marine nitrogen and phosphorus cycles in numerous biogeochemical applications2–...

2010
Piotr Szulc

A field experiment was carried out at the Didactic and Experimental Farm in Swadzim near Poznań in 2004-07. Two maize cultivars were studied, six nitrogen doses and magnesium doses. The effects of the mentioned factors exerted on the utilization of nitrogen from the applied mineral fertilizer and on the nitrogen harvest index were studied. The impact of nitrogen fertilization on the mineral int...

2013
Megerle L Scherholz Wayne R Curtis

BACKGROUND Lack of accounting for proton uptake and secretion has confounded interpretation of the stoichiometry of photosynthetic growth of algae. This is also problematic for achieving growth of microalgae to high cell concentrations which is necessary to improve productivity and the economic feasibility of commercial-scale chemical production systems. Since microalgae are capable of consumin...

Journal: :Genetics and molecular research : GMR 2015
G J Dai S H Cheng Z T Hua M L Zhang H B Jiang Y Feng X H Shen Y A Su N He Z B Ma X Q Ma S G Hou Y R Wang

Genetic improvement is the fundamental basis for improving nitrogen-use efficiency. A better understanding of genetic factors controlling nitrogen uptake and utilization is required for crop genetic improvement. In this study, we identified the quantitative trait loci (QTLs) associated with traits of nitrogen uptake and utilization by using the single-sequence repeat marker method and a recombi...

1998
Juan Manuel Ruiz Luis Romero

Twelve different tomato (Lycopersicum esculentum Mill.) genotypes were grown in a controlled greenhouse to determine the influence of genotype variation on the efficiency of nitrogen utilization and fruit yield. The results showed that the variation of genotype in tomatoes influences the utilization and assimilation of foliar NO3. The genotypes that proved highly efficient in this utilization w...

Journal: :بوم شناسی کشاورزی 0
سیما قلمباز امیر آینه بند عبدالامیر معزی

in order to evaluation of relation between weed dynamic and utilization of nitrogen in weed as influence of integrated fertilizer management in different weed densities, a field experiment was carried out in experimental farm of agricultural faculty of shahid chamran university of ahvaz at 2011-2012 growing season. experimental design was based on a split-plot with three replications .main plot...

Journal: :Journal of Turfgrass Management 2000

Journal: :The Journal of Nutrition 2000

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