This research includes an amendment to a TCP-Peach+ protocol to improve the performance of the TCP over satellite links, Where the protocol has been proposed based on splitting the connecting path between the source and target, in order to obtain a
n adjusted protocol of the kind of Satellite transport protocol (STP) specialized in the space segment only, and that by proposing a new algorithm for this protocol which is located under the satellite transport layer (STL). We have focused in our research on a comparison between the proposed protocol and TCP-Peach+ protocol.
Peach (Prunus persica Batsch) transplants cv. Dixired were sprayed three
times a season with three levels of urea (45% N) (2.5, 5.0 and 7.5 gm/ L), and
two levels of iron (10 and 20 mg Fe/ L) using chelated iron Fe-EDDHA
(6%iron), each alone or in
combination. Meanwhile the control transplants
sprayed with distilled water during 2006 and 2007 growing seasons, twenty
days intervals between each spray and another, the first spray is done at the
first week of May in both seasons. Results indicated that all spray treatments
with urea and iron each alone or with each other significantly increased leaves
N, K, Fe, chlorophyll and carbohydrate concentration, transplant leaves area,
shoots number, transplants height, main stem diameter and vegetative and root
dry weight. While leaves P concentration, significantly decreased with the foliar
spray with two concentrations of iron alone, or in combination with all
concentrations of urea. The best treatment was 7.5 gm urea/ L + 20 mg Fe/ L.,
which gave the highest means of all studied parameters, except leaves P
concentration, which were the highest mean of it was in the control treatment
at both seasons.
A study was conducted to investigate the presence of root knot nematode
(RKN) and other plant parasitic nematodes associated with Syrian most
important peach plantation areas. 126 soil and root samples were taken from
63 peach orchards of Ghuta, Z
abadani, Yabrod, Syrghaya and Kharabo at
Damascus governorate, and Tezeen, Kufr Ton, Khattab, Arzeh, Sheha,
Qamhaneh, Balhasen, Rastan, Mhardeh, Salmieh, Sqalbieh and Sharaya at
Hama governorate.
The compatibility between the varieties and the
percentage of budding success and the vigor and vegetative growth of these
varieties were studied. The plants growth was monitored and all the required
readings were taken from the beginning of buddi
ng at the end of summer until
the end of the next growth season.
