RESPONSE OF SEWY DATE PALM GROWN IN SANDY SOIL TO SPRAYING TWO SOURCES OF SULFUR

Abstract

In order to study the effect of sulfur concentration (200, 300 and 400 ppm) and sources (agriculture sulfur and liquid sulfur) on leaf macronutrients, yield and fruit physical and chemical properties, during two consequently seasons, of Sewy date palm fruits grown in sandy soil under El-Karga Oasis – New valley governorate a field experiment was tack place. The obtained results showed that spraying sulfur at 200 to 400 ppm in form of agriculture sulfur or liquid sulfur was significantly enhanced leaves nitrogen, Phosphorus and potassium contents rather than untreated palms. However, non-significant differences were observed in calcium contents. Regardless sulfur source, yield in kg/palm and punch weight (kg) were significantly enhanced as a result of spraying sulfur at 200 ppm to 400 ppm in comparison to untreated palms. All physical and chemical properties of Sewy date palm fruits were significantly improved as a result of spraying sulfur at 200 to 400 ppm. Nonsignificant differences neither in physical properties nor in chemical properties were obtained between the two higher concentrations (300 and 400 ppm), during the two experimental seasons. Furthermore, using the sulfur as a foliar application in liquid sulfur source present superiority than the agriculture sulfur. Based on the obtained data we can recommended to spraying the Sewy date palm grown in sandy soil at El-Karga Oasis New Valley Governorate or resampling conditions.