Abstract Human urine is a readily available nutrient source that can complement commercial fertilizer production, which relies on finite mineral resources and global supply chains. This study evaluated the effectiveness of simplified solar distillation process for to recover phosphorus (P) nitrogen agricultural use water non-potable purposes. Synthetic fresh, synthetic hydrolyzed, real hydrolyz...

BACKGROUND Rheumatic mitral stenosis (MS) is still a common disease in developing countries with high morbidity and mortality rates. The purpose of the study was to evaluate arterial stiffness in severe MS before and after percutaneous mitral balloon valvuloplasty (PMBV). METHODS Thirty patients with MS in sinus rhythm requiring PMBV and 20 age-gender matched healthy volunteers. The analyze o...

In this research, several chemical extractants and modified Olsen methods were studied in 25 surface-calcareous soils (0-30 cm) for determining available phosphorus (P) for corn (Zea mays L.) plant. In this experiment, the highest correlation was obtained between extracted P by Olsen and Colwell methods (NaHCO3-extractable P) and dry weight of corn shoot (r =0.67 and 0.75, p

in order to investigate the effects of soil chemical characteristics on weed species diversity in eastern mashhad region wheat (triticum aestivum l.) fields, an investigation was held in the year 2009. wheat fields were classified based on the acreage from 3-5, 5-10 and higher than 10 ha. five random soil samples were taken using a 5 cm diameter auger from the soil of each experimental field an...

in order to study the effect of mineral nutrient and salicylic acid on the fruit yield and yield components of coriander, a study was conducted in experimental field of gorgan university during 2007. the experiment was laid out in randomized block design with ten treatments (salicylic acid, nitrogen, phosphorus, potassium, magnesium, zinc, iron, boron, molybdenum and control) in three replicati...

introduction: soil fertility management is a key factor in achieving sustainable agriculture. use of organic fertilizers is one of the methods that without environmental harmful effects with improvement of chemical and biological conditions increases soil fertility. nitroxin contains a collection of the best strains of nitrogen fixation bacteria of the genus azospirillum and azotobacter. these ...