The; research was carried out during the two agricultural seasons 2010/2011-
2011/2012 at Par. of Agriculture, Department of crops, to study the effect of date
harvesting of Thymus vulgaris L. on quantity and essential oil percentage thyme leaves .
Planting seeds at 5/1/2010 at polyethylene don full 250/g soil and transplanting seedlings
at 1/2/2011 experiment locationn in area Al-sheikh Bader,Tartous Governator(Syria) the
experiment was randomized blocks designs. with three replications, using 3 harvesting
dates
Before flowering stage (T1) 61 days after transplanting.
Full flowering stage (T2) ater 65 days after transplanting.
After flowering stage "decennary binging" (T3) 72 days after transplanting. The
results showed that:
The harvesting time before flowring stage gave significant increasing in percentage
of moisture of herb, significantly increasing carbohydrates, fat in leaves comparing to the
another date harvesting full and after flowering stages (T1,T2) respectively.
The harvesting of time full flowering (T2) gave significant increase at protein
percentage, ash and essential oil in thyme leaves compared to the times harvesting before
and after flowering stages (T1) and (T3) respectively.
The harvesting time after flowering stages (T3) caused significantly decreased
moisture percentage in herb, protein percentage and fat percentage in leaves compared to
the two harvestings before and full flowering stages (T1) and (T2) on another hand
significantly increased of total fiber compared to the (T1) and (T2) harvesting stages during
the two seasons.
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 Sept
ember 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.
The thyme is a wild plant naturally present in the Syrian Seaside at varying altitudes
up to more than 1000 m above sea level. The essential oil was extracted from thyme plants
taken from seven sites (Safita - Beit Sheikh Younis, Khirbet Al-Mezah –
Albirdanie,
Sheikh Badr – Aljalsat, Banias – Shibani, Qadmous – Alhatria, Qardahah - Deir Hanna,
Albhloulih - Beit Alia) by distilling 200 g of dry leaves from each site to obtain the
essential oil.
