USING LIBS TECHNIQUE TO FOLLOW UP THE EFFECT OF SILICON ON REDUCING HAZARDS OF SOIL SALINITY ON WHEAT PLANT

MANAR HASSAN MOHAMED SALEH


Abstract


This investigation was carried out, in The National Institute of Laser Enhanced Sciences, (NILES), Cairo University during 2002-2003 season. Wheat plants, Triticum asetivum, were grown in soil having different salinity levels. Mixed amounts of Na Cl, Ca C}z, and Mg S04 with 1 : 1 : 0.5 ratios were added to the soil at concentrations of 2000, 4000, and 6000 ppm. Na, Ca, and Mg concentration in different parts of the plant at different growth stages were determined in a control group which has been grown without any treatment, as well as in the other groups treated by Si in the form of sodium meta silicate (Na2 Si 03 .5H20) added to the soil or foliary to reduce salinity hazards. Salinity effects on the plant growth, the yield, and some certain physiological responses ( total sugars, total free amino acids, total soluble phenols, plant pigments) were also reported. Laser Induced breakdown spectroscopy (LIBS) is used as a fast, accurate and simple technique for qualitative elemental analysis. Laser induced breakdown spectra are obtained for different fresh plant parts (leaves, roots and grains) as well as from the soil for control and treated samples. After maturation, plant spikes were collected, grains were grinded then pressed into tablets to be analyzed. The obtained results have been confirmed usmg standard conventional analytical techniques.The results obtained can be summarized as follows:


Other data

Other Titles استخدام تقنية استطياف البلازما المستحثة بالليزر فى تتبع تأثير السيلكون على تقليل مخاطر ملوحة التربة على نبات القمح
Issue Date 2005
URI http://research.asu.edu.eg/handle/12345678/9428


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