Conditions based on previous assays with potassium p-acetylphenyl sulphate have been established for the specific assay of arylsulphatase C in rat tissues. The enzyme has optimum activity with 40mm substrate at pH8.0 in the presence of 0.1m-phosphate buffer. Under these conditions arylsulphatase C can be assayed without interference from the other arylsulphatase enzymes present and is useful as...

The fertilizer requirement of tef varies from agro-ecology to and soil soil. Therefore, the objective this study was refine optimum phosphorus rate for under balanced fertilization. experiment conducted on-farm during main cropping season two consecutive years (2015-2016) in Vertisol at Ada’a District. had 8 treatments (six rates each with fixed amount N, K2O, S, Zn B, negative contr...

The concentrations of nutrients in the leaves allow a better understanding nutritional status oil palm plants, making it tool for diagnosing origins problems and assisting fertilizer recommendations. In this sense, objective current research was to evaluate leaf N, P, K, Ca, Mg S under fertilization with phosphate, potassium magnesium edaphoclimatic conditions Eastern Amazon. experiment conduct...

Pseudomonas fluorescens N.C.I.B. 8248 was adapted to grow on potassium d-glucose 6-O-sulphate as the sole carbon and sulphur source. Adapted bacteria grew optimally at 37 degrees C on 1.6% (w/v) sulphate ester and growth coincided with the disappearance of the ester from the culture medium at a rate of 2.4mg/h per ml. Three sulphated compounds were detected in the culture fluid at the terminati...

Kinetic data for the hydrolysis of potassium pacetylphenyl sulphate by fresh rat liver suspensions suggested that the arylsulphatase activity so observed could be attributed to a single enzyme (Dodgson, Spencer & Thomas, 1953) which was later found to be localized mainly in the microsomes of the liver cell (Dodgson, Spencer & Thomas, 1954a). Preliminary attempts to purify the microsome enzyme (...

The purpose of this research is to investigate the effect potassium fertilization source and dose on productivity quality parameters strawberry. trial was conducted in 2016-2017 at experimental greenhouse Hassan II Institute Agronomy Veterinary Sciences Rabat. Strawberry plants cultivar “San Andreas” were planted November 6th 12 liter pots equipped with a gravity fertigation system. design spli...

application of biofertilizers, especially plant growth promoting rhizobacteria (pgpr) is one of the most important strategies for plant nutrition compared to chemical fertilizers, especially in sustainable management of agroecosystems. in order to evaluate the effect of pesodomonas bacteria strains and chemical phosphate fertilizer on yield and yield components of wheat the kavir cultivar an ex...

in order to investigation the effect of different fertilization treatments on nutrient and essential oil contents in dragonhead drug (dracocephalum moldavica l.), an experiment was conducted in the station of agricultural research in urmia on 2008. treatments (nitroxin, barvar phosphate biofertilizer, biosulfur, nitroxin+ barvar phosphate biofertilizer, barvar phosphate biofertilizer + biosulfu...