Phosphorus Loss into Ground Water in Paddy Soils as Influenced by Irrigation System and Rate of Added-P

A field experiment was carried out in delta Nile region of Egypt, to elucidate the impact of irrigation system and graded phosphorus fertilizer rates on P loss into ground water in paddy soils (heavy clay soil). Three irrigation system were used: submergence with continuous head of water (about 8 cm), irrigation with saturation percent and discontinous irrigation where soil was irrigated every 7 days. The rate of applied P were 45 and 90 Kg P2O5/acre as super phosphate. Values of dissolved reactive phosphorus (DRP) in ground water increased under saturation and discontinuous irrigation compared to it under submergence condition (e.g.,0.25,0.18 and 0.14 mg P/L, respectively) under 90 Kg P2O5 /ac. and after 15 days of added-P. Accumulation values of DRP in ground water after 105 days at 90 Kg P2O5 /ac. of added-P were 1.18,0.76 and 0.67 mg P/L under saturation, discontinuous and submergence irrigation methods, respectively. The rate of loss for DRP in ground water was the highest under saturation method at 90 Kg P2O5 /ac. ( 0.01 mg P/L/day). Results also showed that, accumulated total phosphorus (TP) at the end of ground water collection (105 days after transplanting) when 90 Kg P2O5 /ac. was added were 2.78,2.18 and 1.69 mg P/L under discontinuous, saturation and submergence irrigation system, respectively. Also, the rate of loss for TP was the highest under discontinuous irrigation condition (0.025 mg P/L). These results indicated that, increasing added phosphorus fertilizer let to increasing P loss into ground water by leaching through the soil profile.In addition, phosphorus loss into ground water was increased with decreasing added water for irrigation in paddy soils (increasing drought regime) and that was not expected

Distress Signal Tracker Using GPS and SMS Technology: A Prototype

There is no time in history that tracking has become a part and parcel of almost everyone’s lives than it is today. Due to the need of a device that enables easy access in locating a particular person, things or vehicles, the proponents aim to develop a study which comprises of the communication between a distress signal tracker incorporated in a server through mobile communication (SMS) that contributes to public safety, delivers accurate location of the user to the corresponding recipients and provides a real-time monitoring system using VB.Net and MySQL. The method of research used, in this study, is experimental method which involves the identification of response time and availability of the network signal. A series of testing was performed in 30 different locations in Calamba, Laguna demonstrating the versatility and accuracy of the device and server under various circumstances. Based from the evaluation of the data gathered, the results are proved to satisfy the required objectives and specifications of the study

Purification, characterization, and cloning of a bifunctional molybdoenzyme with hydratase and alcohol dehydrogenase activity

A bifunctional hydratase/alcohol dehydrogenase was isolated from the cyclohexanol degrading bacterium Alicycliphilus denitrificans DSMZ 14773. The enzyme catalyzes the addition of water to α,β-unsaturated carbonyl compounds and the subsequent alcohol oxidation. The purified enzyme showed three subunits in SDS gel, and the gene sequence revealed that this enzyme belongs to the molybdopterin binding oxidoreductase family containing molybdopterins, FAD, and iron-sulfur clusters

Monitoring of microbial hydrocarbon remediation in the soil

Bioremediation of hydrocarbon pollutants is advantageous owing to the cost-effectiveness of the technology and the ubiquity of hydrocarbon-degrading microorganisms in the soil. Soil microbial diversity is affected by hydrocarbon perturbation, thus selective enrichment of hydrocarbon utilizers occurs. Hydrocarbons interact with the soil matrix and soil microorganisms determining the fate of the contaminants relative to their chemical nature and microbial degradative capabilities, respectively. Provided the polluted soil has requisite values for environmental factors that influence microbial activities and there are no inhibitors of microbial metabolism, there is a good chance that there will be a viable and active population of hydrocarbon-utilizing microorganisms in the soil. Microbial methods for monitoring bioremediation of hydrocarbons include chemical, biochemical and microbiological molecular indices that measure rates of microbial activities to show that in the end the target goal of pollutant reduction to a safe and permissible level has been achieved. Enumeration and characterization of hydrocarbon degraders, use of micro titer plate-based most probable number technique, community level physiological profiling, phospholipid fatty acid analysis, 16S rRNA- and other nucleic acid-based molecular fingerprinting techniques, metagenomics, microarray analysis, respirometry and gas chromatography are some of the methods employed in bio-monitoring of hydrocarbon remediation as presented in this review

Effects of Fermented Madre De Agua Leaf Meal (Trichanthera gigantea) on Growth Performance of Heritage Free-Range Chicken (Gallus domesticus Linn.)

The study was conducted to evaluate the performance of six (6) week-old heritage chicken (Black Australorp) fed with Madre de agua leaf meals of the compound diets.  A single-factor experiment was used for 75-head starter chicks with three (3) dietary treatments and five (5) replications.  The feeding trial was run for 84 days through feed mixtures containing 16.105% and 3,105; Crude Protein and ME, Kcal/kg, respectively. Trichantheragigantea leaf meal was produced through 3-day sun drying and 10 min of oven-drying until the 10-14% moisture content was achieved. The dried leaves were hammer-milled through a 2-mm sieve. The experimental feeds were subjected to laboratory analysis. The results of the study observed a marked improvement in the growth performance of the experimental birds as measured by the parameters used. Significant differences among treatment means were observed from the average gain weight, average feed consumption (3,698g – 4,538g), and final weight gain (774.82–977.39 g). The feed conversion ratio (4.65 – 4.77), and feed cost per kg of meat produced (PhP126.60 – 37.72) were not significantly affected by the experimental diets (P>0.05). The improved growth performance of the experimental chicken indicated that the madre de agualeaf meals-treated dietcan be a viable feed option for free-range chicken. It is recommended to further explore the viability of the said experimental feed mixture to other chicken breeds and poultry species using various feed formulations with madre de agua leaf meals as protein feed ingredients

Methyl 2-{2-[(2-methylphenoxy)methyl]phenyl}-2-oxoacetate

In the title compound, C(17)H(16)O(4), the dihedral angle between the benzene rings is 4.4 (2)°. In the crystal, weak C—H⋯O hydrogen bonds connect mol­ecules along [001]

Distress signal tracker using GPS and SMS technology: A prototype

There is no time in history that tracking has become a part and parcel of almost everyone\u27s lives than it is today. Due to the need of a device that enables easy access in locating a particular person, things or vehicles, the proponents aim to develop a study which comprises of the communication between a distress signal tracker incorporated in a server through mobile communication (SMS) that contributes to public safety, delivers accurate location of the user to the corresponding recipients and provides a real-time monitoring system using VB.Net and MySQL. The method of research used, in this study, is experimental method which involves the identification of response time and availability of the network signal. A series of testing was performed in 30 different locations in Calamba, Laguna demonstrating the versatility and accuracy of the device and server under various circumstances. Based from the evaluation of the data gathered, the results are proved to satisfy the required objectives and specifications of the study