A field experiment was carried out in Hout research station- Agriculture research center in
Swaida – General Commission For Scientific Research Agricultural during the growing
season of 2015-2016 to study the effect of different levels of deficit i
rrigation with
different levels of town refuse compost (TRC)on some morphological parameters and the
productivity of lettuce and compare it with the common mineral fertilizers.
The experiment was designed as a split block design with three levels of irrigation, each
level has four fertilizing treatments and control with three replicates.
The research has studied the plant height (H), the number of its leaves (N) ,the leaf area
(LAL), the plant's leaves area (LAP), the leaves area index (LAI), in addition to the lettuce
head's fresh weight and the total productivity of the planted area.
The irrigation and fertilizing interaction results indicate to the obvious positive effect of
the organic additions on the productivity parameters and the efficiency of deficit irrigation,
and the significant superiority of T11 treatment in all of the measured parameters in
compare with the other treatments with an increased final yield of %169 comparing with
T15 and % 428 comparing with T35.
The results also indicate to the possibility of saving %25 of the consumed amount of
irrigation water by using TRC instead of mineral fertilizer , and reveal that the organicmineral
combination achieved a better yield with percentages of ( 29- 44 – 53 )%
comparing with single mineral fertilizer in the three studied irrigation levels (T1-T2-T3)
respectively.
These results give the farmer a wide range of possibilities to choose what suits his
available productivity needs , and a clear idea about the expected yield according to the
chosen treatment.
This research was conducted in 2016c, at the Zahid Western
Research Station in Akkar Plain region of Tartous Governorate, the
objective of this research is study the effect of non-conventional
organic waste (compost of garbage, sewage sludge) and
cow
manure on the physical properties of clay soil in the region. Wastes
was added to the soil at a rate of (0 - 10 - 20 – 30) t/ha, in order to
determine the effect of the difference in the quantity added on
physical properties of the soil and peanut productivity.
The effect of clay soil treatment with two levels of tobacco west compost and
organic fertilizer (15 and 30 ton/ h), in addition to mineral fertilizer treatment, with three
replicates of each treatment on some physical properties (Aggregate size di
stribution, main
weight diameter, bulk density and porosity) and chemical properties (Organic carbon,
humic and volvic acid and humification index for big and small soil aggregates was
studied.
The results showed that tobacco west compost and organic fertilizer were effective in
increment of soil content of organic carbon, which reached (20 and 26%) for organic
fertilizer, and (39 and 45%) for compost compared to the control, conducing to ameliorate
soil physical properties, where The main weight diameter, stable aggregate rate and soil
porosity were increased. Whereas, bulk density decreased significantly in both treatments
compared to the control. Compost treatment affect soil physical properties more than
organic fertilizer.Mineral fertilizer decreased soil content of organic carbon compared to
the control.
Humic and volvic acids contents were between 2.12 and 74.3 mg/kg aggregates in
the control,and compost treatments alternatively in macro aggregates (> 2mm). Wile,
volvic acid values were between 0.93 mg/kg in control for small aggregates (< 0.25), and
3.17 mg/kg aggregates in mineral fertilizer treatment for (0.25 – 2) aggregates.
Humification index values were less than 2 in macro aggregates, while it was bigger than 2
in small aggregates.
The research had performed in Tartous county at Alsinaea area and Faculty of Technical Engineering in year 2012 .This investigation had confirmed the possibility of quick dispose of byrene and the possibility of byrene manufacture through byrene pre
ss and producing pieces for heating or producing barbecue charcoal. This products are with little smoke, smell and environment friendly. The results showed the following:
1- Producing pieces of byrene for heating with the possibility of controlling the strength and the press of pieces. With this we can contribule to environment protection and loosen the problem of heating in winter.
2- The comparison of organic fertilizer (Compost) from Byrene with mixture fertilizer from oak, straw and cock waste showed moral differences for nitrogen and kalium and no moral differences for organic substance, ashes, phosphourus and PH. The compost contains a little of Poly Phenolic. The SHETIANZY number for compost was with cold and hot water 0.277, 8.22, respectively and for mixture fertilizer 10, 16.
3- It was no moral differences between the specific heat and heat of combustion. The less moral difference was for both 0.430, 1.054, respectively. The barbecue charcoal from Dakka was with little smoke, smell and quick combustion. The producing cost of 1 kg was 5 syrian pounds
This study was conducted during the 2011-2012 and 2012-2013 seasons in
Abu-Jarash orchards area in Damascus to identify the effect of improved
organic materials as sludge, manure and compost in improving some soil
physical characteristics and whea
t productivity. Results showed that the three
types of organic material affected the physical characteristics of the studied
soil. They decreased its bulk density, increased its total porosity and increased
its ability of holding water at field capacity. Results also showed that the
compost of city wastes was the best in improving soil physical properties. The
three organic materials, particularly the sludge increased the total productivity
of wheat (Sham3).
The study was conducted during the period 2010-2012 in the Faculty of agriculture at the University of Tishreen, with a view to obtain organic fertilizer (sludge with plant waste), through
compost it in the form of a pile within an isolated device.
The changes have been monitoring with some physical and chemical properties of the fermented substance for the duration of fermentation, by taking samples each month and analyzed them in the laboratory.
The study has included change physical and chemical residue during the fermentation process, where the temperature has reached in the center of pile to 70 degrees Celsius and the device temperature exceeded 70 degrees Celsius to 72 degrees Celsius, and either of the pH in the fermented substance had arrived to the 7.4in the pile and 7.45 in the device, the percentage had
dropped C/N from 30/1 to 18/1 of the pile and 17/1 of the device, showing the death of 99% of the huminth eggs of the intestinal worms after 26 days from the beginning of the composting process by crumpling and 97% of the huminth eggs intestinal worms had died after 10 days from the beginning of the composting process in the device.
Some chemical, spectral and thermal characteristics of some humic acids
(HA) extracted from: Farm manure (Fm), biogas(Bio), compost (Com), forest
litters of pine (Pl) and of descendant forest (Dl), and their complexes with Camontmorillonite
were s
tudied by TGA and DTA analysis.
