This research was carried out at the Agricultural Scientific Research Center in Hama, in seasons 2020, 2021 to study the effect of foliar spray of seaweed extract on the growth and productivity of the olive tree cv. Kaisi, Where the foliar spray was
applied with seaweed extract called alga 600 in concentrate of (0.5 g/l) According to treatments: A0 control without spraying seaweed extract, A1 one spray one week before flowering, A2 one spray after fruit set, A3 one spray one month before harvest, A4 two sprays (before flowering and after fruit set), A5 two sprays (after fruit set and one month before harvest) A6, three sprays (before flowering, after fruit set, and one month before harvest) with the addition of ground fertilization according to the Fertilizer recommendation. The results of foliar fertilization showed a significant effect on the vegetative growth traits, as The treatment one month before harvest was superior to the rest of the treatments with a primary shoots length average 6.94 cm, while the control was 4.75 cm, while seaweed extract had a positive effect on the total number of flowers. Where the spraying treatment before flowering and after the fruit set contract was superior to the rest of the treatments, as the average number of flowers was 203.11 compared to the control with an average number of flowers 164.19, as well as in the percentage of fruit set, as the highest percentage of the contract when spraying treatment before flowering was 3.20% and in control 2.19% The results also showed a clear superiority in the productivity of the tree, especially the treatment before flowering and after the contract, Where the average tree productivity was 37.07 kg, and in the control it was 14.07 kg It was observed that there was a significant increase in the percentage of oil for the fruits, as a treatment a month before harvest was significantly superior to the rest of the treatments in both seasons, as the highest value of the oil percentage reached 20.28%, followed by a treatment before flowering, after fruit set and one month before harvest, with an oil percentage of 20.27 compared to the control 17.17%.
Ash toxicity of burning pruning residues of three plant species i.e. apple, grape and
olive was tested against adults of cowpea seed beetle Callosobruchus maculatus
(F.) (Coleoptera, Bruchidae) using the following concentrations: (5, 10, 20, 40
an
d 80) g/kg of cowpea seed. The study was carried out in incubator at fixed
temperature and humidity at Biotechnology Research Center, Al-baath University.
Readings were taken after (24, 48 and 72) h of treatment, and corrected mortality
rates were calculated and values of LC50, LC90, LT50 and LT90.
To determine the susceptibility of some olive varieties to the
disease of eye peacock, We studied the development of eye peacock
disease on 3 varieties (Khadairy - Zorzalina - Frontoio. The
percentage of infected leaves and the severity of infection were
estimated during spring and autumn months, the maximum period
of the spread of the disease.
The research was conducted on some olive
varieties known as Alsourani- Aldan- Mahazm Abu Satel- Alglet-
Alnepali, in the aim of comparing their tolerance against the stress
of salinity (sodium chloride) through some morphological and
physiological traits. Different concentrations of salt as well as to
the control (fresh water) were used in this experiment.
To know the effect of some fungicides on peacock eye disease has beentested five
fungicides from different chemical groups, using concentrations advisable to field
application,on the 45 year old olive trees in the Baksa village Lattakia . The resul
ts
showed an increase in incidence of the control of 22.4 to 45.5 % after 45 days, versus low
incidence rates in the fungicides tested treatments . The best two fungicides were
thiophanate –methyl with infection decreasing from 19.2 to 10.3% and chlorothalonil from
24.3% to 16.5% . The severity also decreased in the treatment of the fungicide thiophanate
–methyl from 9.7 to 4.1 % and chlorothalonil from 13.7 to 8.9 % while the severity of the
infection of the control increased from 10.5 to 25.6 % .In order to efficiency the fungicide
thiophanate – methyl was more effective reducing the infection severity compared with the
control with 82.8 %, followed by chlorothalonil , kresoxsim methyl , and mancozeb with
73.3 , 72.0 , 71.9% respectively whereas the fungicide copper oxychloride was the least
effective with 68.1%.
جرى توصيف 10 أصناف مختلطة، وتصنيفها، و6 أشجار غير موثقة من الزيتون المزروع في المجمع الوراثي للزيتون في درعا (محطتي إزرع وجلين) التابعين للمركز العربي (أكساد) الأولى محطة في منطقة جافة، الثانية نصف جافة.
أجريت القياسات الحيوية لتسعة معايير تابعة ل
لثمرة والنواة، جرى تحليل التباين على مستوى 5%. سجلت الصفات الكمية والنوعية للأصناف والأشجار في الجدول رقم (2) حُسِبَ دليل التشابه، وعُرِضَ في الجدول رقم (3).
استخدِمَ برنامج (NTSys) لرسم المخطط الشجيري رقم (3)، عُرِفَت الأشجار والأصناف من جديد نتيجة لهذا البحث.
The research was aimed to study the effect of olive press methods on the oil quantity and quality. The results showed the following:
The method of press Olive effect to the quantity of Olive oil so the results of oil quantity from olive fruite p
ress in mechanical olive press method more above from half mechanical method and from traditional method ( the witness). The increase of quantity between mechanical and traditional method was 60% and between mechanical half mechanical method was 27% and bween half mechanical and traditional method was 28%.
The method of press Olive effect to the of Olive oil quantitatively the results of oil quantitatively from olive fruit press in mechanical olive press machines to surpass half mechanical olive press that is the flavor and color best and Acidity presumption and peroccid number is less .
The phenotypic characterizations, such as: fruit weight, seed weight and
dressing percentage for eighteen olive cultivars grown in Palmyra oasis were
studied and discriminated them qualitatively by studying their seeds and
processing their images
through fractal geometry technique during 2009 and
2010 seasons. The obtained data were analyzed statistically to have the least
significant difference by using Genstat 8th ed program, and the dissimilarity
matrix of these cultivars were included according to morphological and
geometrical features through SPSS program.
Thirteen phenotypes of cultivated wild olive were selected during 2007- 2008
from four orchards in Mesiaf region, to study oil percentage and fatty acids
contents in these types for choosing types for oil production, in order to
propagate and cons
erve them in a germplasm, and then to be cultivated
because they have adapted to local climate in this region. The results were
analyzed statistically by using Gen-State program to calculate least significant
differences between values. The results confirmed the high biodiversity in these
studied types, and they were classified into five groups according to their oil
percentage and contents of oleic acid. The oil percentage ranged from 3.9 to
27.3 %, and the fatty acids had significant differences between them, the oleic
acid was in olive oil between 56.7 and 75.5%. The types P1-1 and p1-3 showed
the best results for producing oil.
This paper describes a study of the influence of extraction system
(centrifugation and pressure system) on the chemical composition and sensory
quality of Dan virgin olive oils produced in Syria. Analysis of the effect of the
extraction system on
the values of analytical determination revealed
statistically significant differences (P≤0.05) in a few parameters only, mainly in
antioxidant content and oxidative stability. The results appear to confirm the
influence of the extraction system on the quality of Dan virgin olive oils.
