EFFECTS OF NANOANATASE TIO2 ON GROWTH AND NITRATE ACCUMULATION OF LETTUCE | ||||
| Journal of Plant Production | ||||
| Article 2, Volume 5, Issue 5, May 2014, Page 765-771 PDF (546.57 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2014.53901 | ||||
 View on SCiNiTO | ||||
| Author | ||||
A. S. Shams 
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| Department of Horticulture, Faculty of Agriculture, Benha University, Egypt | ||||
| Abstract | ||||
| Two field experiments were carried out at the experimental Farm of the Faculty of Agriculture, Moshtohor, Benha university, Qalubiya Governorate, Egypt during the two successive seasons of 2010/2011 and 2011/2012, to study the effect of foliar application with bulk or nano-titanium dioxide (TiO2 <10 nm) with three levels (0.01, 0.02 and 0.03 %) on the growth and nitrate content of lettuce (Lactuca sativa var. capitata cv. Great lakes) As a photocatalyst, nano-TiO2 under light could cause an oxidation–reduction reaction. The nano-TiO2 treatments have obvious effects on the improvement of growth and development in lettuce; however, bulk TiO2 treatments have only little effects. It was demonstrated that nanoanatase TiO2 (0.03%) could greatly improve growth (fresh and dry weight) and pigments of photosynthesis (β-carotene, chlorophyll a and b) of lettuce. The results also, showed that TiO2 nano particles (0.03%) recorded the highest total yield (16.434 ton fed-1) and the lowest content of nitrate in lettuce leaves (182.5 µg g-1 DW) as an average in both seasons. Nano-anatase TiO2 treatment could enhance growth, photosynthesis efficiency, activities of nitrate reductase and consequently decrease nitrate content in lettuce plants. | ||||
| Keywords | ||||
| lettuce; Nano particles; Titanium dioxide; Nitrate accumulation | ||||
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