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A field experiment study was carried out during two successive seasons during 2011 and 2012 in Manzanillo olive orchard about 14 years old grown in sandy soil under drip irrigation system from well at El Maghara Station (Desert Research Center), North Sinai Governorate, Egypt. Treatments of ascorbic acid (2000 and 3000ppm), proline (75 and 150ppm) and jasmonic acid (15 and 30ppm) and tap water control...
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