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Studying the possibility of using marine plants residues as an agricultural media in nurseries

د ارسـة إمـكانية استخدام بـقـايـا النباتـات البحــر ية كأوسـاط زراعيةفـي الـمشـاتل

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 Publication date 2013
and research's language is العربية
 Created by Shamra Editor




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This research was carried out during the period of (2010-2013) to study the possibility of benefiting from the raw seaweeds residues accumulated on the Syrian beach in obtaining an alternative substrates instead of the traditional one for using in nurseries especially forestry and thus reducing the peat moss importation and saving the currency, at the same time salvation the environment from the organic plant waste and improve the seashores appearance. This research included two main experiments which were: First: Substrates experiment Second: Soaking seeds in seaweeds extract experiment Finally it should be noted that this described work has added some important positive results in choosing a new substrates which will help in the future to solve the traditional and imported media problems, and it also provided an effective and economical solution for marine plant waste management and disposal from the environmental pollution in the coastal regions.

References used
[1]-ABAD, M.; NOGUEAR, P. AND BURES, S. National inventory of organic wastes for use as growing media for ornamental potted plant production. Case study in Spain. Biol. Res.Technol.,77, 2001, 197-200. [2]-ABD EL-MAWGOUD, A. M. R.; TANTAWAY, A. S. ; HAFEZ, M. M. AND HABIB, H. A. M. Seaweed Extract Improves Growth, Yield and Quality of Different Watermelon Hybrids. Res. J. Agri. Biol. Sci., 6(2), 2010,161-168. [3]-ABOU EL-YAZIED, A.; EL-GIZAWY, A. M.; RAGAB, M. I. AND HAMED, E. S. Effect of Seaweed Extract and Compost Treatments on Growth, Yield and Quality of Snap Bean. J. Amer. Sci., 8(6), 2012, 1-20. [4]-ABUL-HASHEM, M. D. Problems and prospects of cyanobacterial biofertilizer for rice cultivation. Aust. J. Plant Physiol. 28, 2001, 881-888. [5]-ALAA-ALDIN, H. Eingnung von Hobelspänen und Holzschnitzeln in kultursubstraten für Baumschullgehölze. Dissertation Uni- Hannover; West Germany.German.1989,185 p.
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This research was carried during the period of (2010-2013) to study the possibility of benefiting from the raw seaweeds residuse accumulated on the Syrian beach in obtaining an alternative substrates instead of the traditional one for using in nurseries, especially forestry, and thus reducing the peat moss importation and saving the currency, at the same time salvation the environment from the organic plant waste and and improve the seashores appearance .
Thin films of ZnO were successfully prepared on glass substrates with different thicknesses by sol-gel method by using zinc acetate dehydrate as precursor. The surface of thin films morphology from were studied by AFM micrographs, the structural prop erties of the obtained ZnO thin film are studied using X-ray diffraction spectra and their elemental analysis by X-ray energy dispersion spectroscopy (EDX). Moreover, optical properties and emission of ZnO nano thin film were evaluate during ultraviolet-visible-infrared and photoluminescence spectra. The AFM investigations have revealed that the morphology of the films is smooth and homogeneous specially for the high thickness and the grains produced on the surface take the form of nano rods with an average diameter of 240nm. Structural analysis by X-ray diffraction showed that the deposited films have a preferred orientation along the direction (112) and are relatively uniform with average crystal size 19nm, while the EDX spectrum showed that the elemental composition of these films is zinc oxide. The spectrophotometer Ultraviolet -Visible confirms that it is possible to get good transparent ZnO films with a transmission of 77 to 92% in the infrared. The values of optical gaps Eg vary between 3.273 - 3.256 eV. The peak of photoluminescence exhibited a visible emission peak at 616nm that refers to possibility of using thin films as an effective medium of random laser.
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Photosynthetic transport was studied as an indicator of photosynthesis efficiency in two bread wheat cultivars (ACSAD 899, ACSAD 1059) under the influence of one of the salt stress. This study was carried out in sand cultures irrigated with nutrie nt solution in a growth chamber, and 14 days seedlings were treated with 100 mM of sodium chloride. Later the electron transport rates in those plants thylakoids were measured in 21, 28, 35 days of the experiment. Electron transport rates decreased in ACSAD 899 and reached 57% in the last day of the experiment, while it was 24.6% in ACSAD 1059. The decrease in photosynthetic electron transport rate leads to a decrease in the reduction rate of CO2 and the plant productivity as a consequence. Therefore, it could be used as criterion to express photosynthesis.

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