This research aims at studying the most important indicators of water pollution leading to
nutrient increase (eutrophication) in AL- Basel Dam Lake, and connecting them with
pollution sources represented by untreated sewage water and agricultural d
rainage water,
including rain water coming from the lands surrounding the lake. Among the most
important of these indicators are total phosphorus (TP) and total Nitrogen (TN). Samples
were taken and analyzed from four sitesof the lake (S1, S2, S3, S4) were conducted
periodically. The work continued to conduct tests for full hydrological cycle as of January
(2016) until December (2016). The study showed that the lake was highly fertilized
according to the (TN- TP) this indicates that the lake is affected by the pollutants it
encounters, especially the wastewater pollutants. The specific component of algal growth
was determined by knowing the ratio between total nitrogen and total phosphorus. The TN
/ TP ratio was greater than 10, so total phosphorus is the specific component of algal
growth in the Basel DamLake.
The study was performed over the years (2014٬2015) in Barshin
Research Station- General Commission for Scientific Agriculture
Research on the trees age of 15 in grafted with Golden Delicious
Cultivar on two rootstocks, strong: seeds ( Malus domest
ica) and half
strong (vegetative Malling-Merton "MM111"). The study focused on the
effect of the original on the concentration of each of the elements (N-P)
in the leaves and branches of the Golden delicious Cultivar grafted on
those rootstocks.
The research was carried out at Al-Qamishli Agricultural Research Center, GSAR,
Syira, during the seasons 2011, 2012 and 2013, in order to estimate the effect of
adding different levels of a crude Zeolite (T2-20 tons/ha, T3- 40 tons/ha, in addition
to the control (without adding Zeolite T1), on wheat productivity within a bilateral
crop rotation was followed, consisted of wheat and chickpea, and on the content of
nitrogen, phosphorus and potassium in the surface layer of the soil .The research
was conducted using Complete Randomized Block Design with three replicates.
Due to the lack informations on Biochemical of jellyfish in the Syrian waters, the
aim of this paper is determining the nutritional value and organic content for each of the
species Rhopilemanomadica, Pelagianoctiluca and Aequorea forskalea, and co
mpared the
biochemical composition of the three types , so the comparison showed clear differences in
the content of organic material, the sugar were the most concentrated in the three species
and lipid comes in second class, and then followed by the protein content and organic
carbon.A.forskalea was the most containing sugar and R.nomadica the most lipids content,
and P.noctiluca were the most protein content.R.nomadic was the highest content in
organic carbon, R.nomadica and P.noctiluca were convergent contents of organic
phosphorus, while the least contain of organic nitrogenwas in A.forskalea.
A pot exrpriment was conducted in a greenhouse in Tishreen University. The
experiment included three soils differ in their chemical properties: 1) heavy clay red soil
rich in iron oxides; 2) a silty loam basiltic soil; 3) a heavet clay red soil ric
h in total
calcium carbonate (34.8 %). Treatments include application of different levels of triple
super phosphate (TSP, 46 % P2O5) ranged from 0, 20, 40, 60, 80, 100, 150, to 200 mg P/kg
soil. Pots were sowned with maize (2 plants/pot) and grown for 48 days. At harvest, plant
were hatvested before flowering by cutting shoots and extracting roots which were oven
dried and weight were recorded prior to digestion and P determination in shoot and root
tissues. Samples of rhizosphere soils from each pot replicate were taken for P fractionation
and determination.
The response of maize to P application differs at period test according to soil type.
The increase in growth was linear with increasing P level of application in theheavy red
and calcareous red soils, while was polynomial in basilitic soil. The speed of growth
increase in response to P application was influenced by native available P in the soil prior
to application. The application of P led to linear increase in resin-P and MRP fraction in
the bicarbonate extract, but not the Po fraction of the bicarbonate extract. The quantities of
fixed applied P varied according to level of P application, the ratio of P uptake by maize
plants, and chemical properties of the soil type. The proportion of applied P that was fixed
increased linerarly with increasing level of P application. It constitutes 41.7,68.5 and66%
at level of P application (20 mg/kg soil), and decreasing to30.2, 41.9 and 59.1% at level of
P application (200 mg/kg soil) for red, basiltic, and calcerous red soils, respectively.
The research was carried out during two season 2012/2013 –
2013/2014 in Eh-Shikh Barder area. To study the effect of mineral
and cows organic manure on quality of leaves Syrian thyme
(Thymus vulgaris L.) plant.
This research aims to study the effectiveness of each(ferric chloride , ash and coffee
dregs) to remove phosphorus from Lattakia Port Laboratories' waste water which is
assembled in a separate sewage pit by doing laboratory experiments on water con
taining
high concentrations of phosphorus, whether real wastewater or standard solutions of
phosphorus oxide. Where it has been experimenting with ferric chloride at doses as weight
average(FeCl3/P = (0-5)) to give effectiveness ratios(70- 80)% with determining the value
of the pH-compliant and it was noted re-releasing of phosphorus time after(10-12) hours of
the start of precipitation, beside that it has been experimenting with ash as adsorpted agent
at doses as weight average(Ash/P = (2-4.5)) to give effectiveness ratio which it had
reached to 98% where it was noted re-releasing of phosphorus after 11 hours with
determining the pH values of approval for that, As coffee dregs when added in
doses)Coffee dreg/P = 3-10) as weight average, it fulfilled proportion removal(40 - 99) %
and phosphorus re-released after 24 hours. The outcome of these experiments was to
propose the most appropriate economic solution in the case of study.
This study deals with spatial and temporal distributions of organic and inorganic
phosphorus in sedimentary columns from Al-Kabir Al-Shimaliand Al-Hussain estuaries,
during the period March 2013- February 2014.
Organic phosphorus concentrations ra
nged between (2.0 - 207.6) μg/gin sediments
from Al-Kabir Al-Shimali estuary, and from (1.7 –130.9) μg/gin sediments from
Al-Hussainestuary. Sediment content from inorganic phosphorus ranged between
(12.4 – 371.2)μg / g at sediments from Al-Kabir Al-Shimali estuary, and from
(2.0 - 242.6)μg /g at Al-Hussain estuary. Granular composition of sediments did not play
a significant role in the temporal and spatial distributions of organic and inorganic
phosphorus.
In general, organic and inorganic phosphorus concentrations decreased gradually
from winter to summer, and from surface layers of the sedimentary column towards the
deeper layers.
The ratiobetween inorganic and organic phosphorus increasedfrom river into marine
sediments. In addition, this ratio increased gradually as the sedimentdepthincreased, and
was high in winter and low in summer.
The research aims to study the effect of mineral nutrients (phosphorus)and Growth
regulator (kinetin) on quality and concentration of medical vehicles to fenugreek
Trigonallafoenum-graecum L. In two dates of planting For the purpose of achieving th
e
goal.
Fenugreek seeds were planted in the first two dates in the second 21/10 and in 5/11 ,
three levels of phosphorus (0 , 30 and 60) Kgm.h-1 added to the soil , and three Kaintin
concentrations (0, 05,100) ppm been sprayed on plants to the degree of wetness and with
three replicates for treatment in the botanical garden of the Department of Biological
Sciences / basic Education College growth season 2013-2014.
The Growth of plants continued to maturing and drought and the seeds were
harvested and taken for extraction and separation of medical compounds , and the results
showed outweigh the second date on the first date in the content and the concentration of
all medical compounds.
Given the level 30 Kgm.h-1 phosphorus higher content of extracted medical
compounds after the results were analyzed statistically as well as given focus 100ppm
kinetin higher content compared to the other concentrations.
This study was conducted at the farm of agriculture college (Abu Jarash),
Damascus university to determine the impact of time and depth of adding
phosphorus on it's availability in calcareous soil cultivated with corn during
2011 and 2012 seasons.
Super phosphorus fertilizer was added to the soil at
three different depths (0, 10 and 20 cm), while the control spot left without
fertilizer addition. Soil samples were taken for analysis of available phosphorus
(P) from 12 replicates at different depths 0-10, 10-20, 20-30, 30-40 cm with two
samples for every depth at zero time, 15, 30, 45, 60 and 90 days during the
growing corn.
Results indicated that the available phosphorus increased directly in all
samples after cultivation, with a marked value recorded at all depths after 15
days of cultivation. This concentration began decreasing gradually with a
constant rate in time in all transactions and reached 50% after 90 days of
cultivation. It was also observed that available phosphorus was higher at the
two depths, 0-10 and 10-20 cm and after 15 days of post- corn cultivation and
followed by zero time and it was found that the best concentration was
observed at depth extended from 0 to 20 cm in the treatment of adding
fertilizer at depth of 10 cm and time of sampling was 15 days of cultivation.
