Abstract Several technologies have aimed to recover nitrogen directly from urine. Nitrogen recovery in these was limited by the mismatch of nitrogen-phosphorus molar ratio (N:P) urine, being 30–46:1, and that final product, e.g., 1:1 struvite 16–22:1 microalgae biomass. Additionally, high concentrations found urine can be inhibitive for growth microorganisms. Cyanobacteria were expected overcom...

in order to investigate the effect of urea, azocompost and cutting on growth characteristics of oregano, a factorial split-plot experiment was conducted based on randomized complete block design with three replications at yazd and mashhad, iran, during 2012-2013 growing season. four urea levels and four azocompost levels (to provide 0, 40, 80 and 120 kg n.ha-1 each) for yazd location )0, 43.5, ...

BACKGROUND: Fertilizer management plays an important role for obtaining satisfactory yields and to increase crop productivity. Improve saving water in irrigated agriculture and thereby improving water use efficiency is of paramount importance in water-scarce regions. OBJECTIVES: This study was conducted to assessment effect of different levels of irrigation re...

to survive in natural waters, bacteria must respond to a variety of environmental variables such asstarvation. flexibacter chinensis was grown and multiplied in the starvation medium and its viable count, totalcount and cell size were investigated under different temperatures. also, the effects of different nutrientsources were investigated. the survival of the organism under starvation conditi...

abstract- crop residue is applied to amend soil properties and increase crop yield. in this study, the effects of rapeseed residues and different rates of nitrogen on grain yield and yield components of sunflower and weed dry matter were investigated. the experiment was conducted at the experimental farm of college of agriculture, shiraz university, located at badjgah, shiraz, iran in 2007-2008...

The level of glutamine synthetase activity in Agmenellum quadruplicatum strain PR-6 was dependent on the nitrogen source used for growth and on the nutritional status of the cells. During exponential growth, glutamine synthetase activity was low in cells grown on ammonia, urea, or nitrate. During the transition from nitrogen replete to nitrogen starved growth, glutamine synthetase activity bega...

sustainable economical production of tea depends on the proper use of water and fertilizer. for this purpose, the role of supplemental irrigation and nitrogen fertilizer on economical production of tea plantations was studied by assessment of yield, production function, water use efficiency, and benefit/cost ratio, and final return in a field experiment at feshalam tea research station in fouma...