Soil microorganisms directly participate in phosphorus (P) cycle, which turn affects crop yield and quality. However, how biological chemical parameters respond to mineral P fertilizer application rates rhizosphere soil remains unclear. Here, a pot experiment was conducted investigate the effects of different (0, 60, 120, 300 kg P2O5 ha−1) on properties bacterial community maize Mollisol. With ...

Consensus phytase is a new biosynthetic, heat-stable enzyme derived from the sequences of multiple homologous phytases. Two experiments were conducted to determine its effectiveness, relative to inorganic P and a mutant enzyme of Escherichia coli phytase (Mutant-EP), in improving dietary phytate-P availability to pigs. In Exp. 1, 36 pigs (3 wk old, 7.00 +/- 0.24 kg of BW) were fed a low-P corn-...

The distribution of phosphorus compounds in various leaf components has been examined in some detail, particularly for tobacco, where interest has centered in part on the study of nucleic acids, especially in relation to virus infection (2-7). The method adopted for determining phosphorus distribution in the present study was based on the procedure of Ogur and Rosen (8), and on the results of o...

Phosphorus (P) constraint can be alleviated by increasing C inputs, which help to improve crop production and P fertilizer use efficiency. However, the effects of different manures on soil microbial biomass (MBP) fractions as well in calcareous soils remain poorly understood. Soil MBP pool involves mineralization immobilization processes, potentially changing availability. Therefore, (MBP, MBC)...

hydroalcoholic extract of pycnocycla spinosa was shown to have spasmolytic action in vitro and antidiarrhoeal effect in vivo . the hydroalcoholic extract of p. spinosa is composed of alkaloid, flavonoid and saponin components. alkaloid fraction of p. spinosa contains the most active constituents. therefore, the aim of this research was to separate different fractions of alkaloid extract of p. s...

BACKGROUND Forestry residues consisting of softwood are a major lignocellulosic resource for production of liquid biofuels. Scots pine, a commercially important forest tree, was fractionated into seven fractions of chips: juvenile heartwood, mature heartwood, juvenile sapwood, mature sapwood, bark, top parts, and knotwood. The different fractions were characterized analytically with regard to c...

Soil phosphorus (P) is essential for plant growth and influences biological processes. Determining the amounts of available P to plants has been challenging, many different approaches exist. The traditional Hedley sequential extraction method its subsequent modification are applied determine soil forms, which critical understanding dynamics availability. However, quantifying organic inorganic (...

Enclosure experiments with all combinations of NH4 and PO4 treatments were carried out in the northern Baltic coastal zone during the post–spring bloom growth season. Empirical models were used to identify the important 3d treatment effects on the state and process variables governing the main plankton compartments. Moreover, dilution experiments revealed the main nutrient sources for algal gro...

objective(s) the fractions of candida albicans have been used as an immunomodulator. the present work assessed the effect of different fractions of c. albicans on nitric oxide (no) production by mice peritoneal macrophages. materials and methods cell wall and cytoplasmic fractions of c. albicans atcc 10321 strain were extracted. mice peritoneal macrophages were purified and cultured. different ...