Do you want to publish a course? Click here

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%.
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.
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.
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.
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%.

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا