Effect Of Infection Time By Cucumber Mosaic Virus In Growth And Production Pepper Field Agriculture In Lattakia Province

This study was conducted in the village of Almetrkyah located in the southern coastal plain of Lattakia city during 2014. In order to study the effect of Cucumber mosaic virus on growth and development of two varieties of peppers, hybrid ESTAR F1 H (sweet pepper) and Demer(spicy pepper). This study included eight treatments, four treatments for each variety. Plants were mechanically inoculated in three different stages, preflowering bloom, flowering andpost-flowering stages each beside its non-inoculated control. The result should that, the appearance of Cucumber mosaic virus symptoms on infected sweet hybrid, was within four days before its appearance on inoculated spicy variety,symptoms were leaf crinkle, leaf deformation, yellow patches and plant stunting. Inoculated plants showed reduction in number of leaves, number of branches and yield. Plants in pre flowering bloom stage were more effected by virus infection in both varieties. Meannumber of leaves per plant of ESTAR F1 H hybrid were 130 in pre flowering bloom stage compared with 170 leaf/plant in the control treatment. Mean number of branches per plant of ESTAR F1 H hybrid were 43,4 branch/plant in pre flowering bloom stage compared with 56,7branch/plant in the control treatment. Total pepper production per plant was 700,8g in infected plants in preflowering bloom stage compared with 1267,5g/plant in ESTAR F1 H hybrid control. Results of Demer variety take the same results of ESTAR F1 H hybrid. The effect of virus infection on pepper plants were reduced when inoculation were done during flowering stage and post-flowering stage, differences were significant between inoculated plants in both varieties.

Study contrast ratio some productive characteristics and essential oil content depending on the different mowing time for common thyme Thymus vulgaris L. grown in Banias from the Syrian coast

The research aims to study the effect of five harvesting wed (vegetative growth, the beginning of open inflorescences flowering, the beginning of flowering, full bloom, and completeness of the vegetative growth at the beginning of the month of September and that of plants that have already cutted), some of the morphological and productivity indicators for common thyme Thymus vulgaris L . Experiment was designed by the complete randomized manner in three replicates. Statistical analysis was performed by Anova test using Genestat and account teams less moral LSD at a significance level of 5%. Results showed superiority date mower fifth morally on the rest of the dates in terms of index number of branches (16.50 branch / plant), productivity of the wet weight (55.00 g / plant), productivity of dry matter (27.08 g / plant), while the superiority of the date of the second mowing morally the rest of the appointments in terms of the percentage of essential oils (size / weight) (2.10%), also reached the top of the plant at the time of his high mowing fourth (21.50 cm). Highlights the importance of the results by identifying the optimal harvesting date to get the most fresh and dry weight of material and the highest percentage of essential oil, and the resulting economic return to the farmer healthy and beneficial to the consumer, with the continued preservation of the existence of the plant and its tender.