scholarly journals Effect of ambient seasonal changes in physical and chemical properties of the three types of ground water on the reproductive potential of Oreochromis niloticus reared in concrete ponds

2011 ◽  
Vol 1 (1) ◽  
pp. 1-15
Author(s):  
Ashraf Soliman
Keyword(s):  
Ground Water ◽  
Oreochromis Niloticus ◽  
Seasonal Changes ◽  
Reproductive Potential ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

Study the Effects of Shari Lake on the Physical and Chemical Properties for Groundwater in Samarra City

2020 ◽  
Vol 398 ◽  
pp. 173-178
Author(s):  
Mustafa A. Theyab ◽  
Baraa M. Ibrahim Al-Hilali ◽  
Mohammed A. Fadhil
Keyword(s):  
Ground Water ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Ground Structure ◽  
Geochemical Study ◽  
Result Show ◽  
Physical And Chemical ◽  
And Chemical Properties

We design hydro geochemical study to show the effect of Shari Lake on Samarra groundwater. tow samples (Jelam 1,Jelam 2 ) that nearby Shari lake and other samples taken from different location from Samarra city ( Efraz ,SDI factory , Golden Mosque, Samarra university ). Then sent samples to specific laboratory for chemical and microbial test .the result shows the locations (Jelame 1, Jelame 2) have highest value in PH, but SDI factory location has highest value in Sulfate. The result show affect ground water in this city by salt and mineral that found in watershed and ground structure specially limestone that flow throw ground that lead to dissolve salt and mineral then arise the value of studied data.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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