Effect of Some Natural Sources for Anti-Stresses Compounds on Washington Navel Orange Tree Productivity and Fruit Quality under Mid Egypt Conditions | ||||
| Egyptian Journal of Horticulture | ||||
| Volume 50, Issue 1, April 2023, Page 35-46 PDF (1.24 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejoh.2022.121313.1192 | ||||
 View on SCiNiTO | ||||
| Author | ||||
Randa E. Y. Habasy 
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| Citric Research Department, Horticulture Research Institute, Agricultural Research Centre, Giza, Egypt. | ||||
| Abstract | ||||
| This investigation was carried out during two successive seasons (2019 & 2020), to study effect of some natural sources for Anti-stress compounds namely: Chitosan at (100 ppm), Ascorbic acid at (100 ppm), Prolin at (30 ppm) and Vitamin E at (50 ppm) as foliar applications on Washington Navel orange trees for elucidating their effects on tree vegetative growth & physiological performance, initial fruit set & retention and yield & fruit quality which grown Ehnasia restrict / "Beni- Suief" Governorate conditions. Experimental treatments were spraying at three times at the 1st weeks of : May, July & September for two seasons. Results indicated that, all the natural sources for Anti-stress compounds positively improved Washington navel orange tree (growth & physiological performance, initial fruit set & retention and yield as :a number & weight & fruit quality. Whereas, Chitosan compound has a superior effect with significant difference on the above parameters, when compared to other treatments under this study for both seasons. Moreover, anti-stresses compounds under study could be arranged Chitosan, Ascorbic acid, Prolin and Vitamin E respect., as for their effetivness. | ||||
| Keywords | ||||
| Navel orange; Anti-stress; Chitosan; Proline; Ascorbic acid; Vitamin E | ||||
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