in order to evaluate the efficiency of inoculation of chickpea seeds with mesorhizobium and application of nitrogen on yield and yield components of chickpea an experiment was conducted in research station of neishobour, khorasan-razavi. the experiment was conducted in randomized complete block design (rcbd) with four replications and 13 treatments including mesorhizobium (swri 1, 2, 3, 6, 9, 1...

Urea and uraease (U-ase) activity were determined in water samples taken from the surface layers of 17 lakes of different trophic status. Urea concentrations were inversely correlated with the trophic status of the studied lakes and varied from below the detection limit to 25 micromol l(-1). Maximal potential ureolytic activity (V(max)) ranged from 0.2 to 7.0 micromol l(-1) h(-1). The highest u...

Soybean is traditionally grown in soil, where root symbiosis with Bradyrhizobium japonicum can supply nitrogen (N), by means of bacterial fixation of atmospheric N2. Nitrogen fertilizers inhibit N-fixing bacteria. However, urea is profitably used in soybean cultivation in soil, where urease enzymes of telluric microbes catalyze the hydrolysis to ammonium, which has a lighter inhibitory effect c...

A finishing trial and a metabolism trial were conducted to evaluate sources of supplemental protein in dry-rolled corn (DRC) and dry-rolled grain sorghum (DRGS) diets fed to large-framed calves and to determine effects of grain and protein source on ruminal metabolism. In Exp. 1, 144 Charolais crossbred steer and heifer calves (BW = 269 +/- 3 kg) were used in a randomized complete block design ...

the experiment was conducted to study the effect of treatment of rice straw with urea and a urease containing midden soil on the chemical composition of treated rice straw, feed intake of the animals, nutrients digestibility, body weight gain, feed conversion efficiency and overall economy of feeding for a period of 105 days. twelve indigenous growing cattle (live weight 130.00±1.67 kg) were se...

In order to assessment the effect of micro and macro nutrients on agro physiological traits of oat crop a research was conducted via split plot experiment based on randomized complete block design with three replications at Agricultural Research Station, Faculty of Agriculture, Shahid Chamran University of Ahvaz, along 2013-2014. The main factor included different complex of macro and micro nut...