Response of Washington Navel Orange Trees to Foliar Spray with Some Bio and Mineral Compounds | ||
| Sinai Journal of Applied Sciences | ||
| Volume 2, Int. Conf. 2013, April 2013, Pages 47-62 PDF (423.65 K) | ||
| Document Type: Researches | ||
| DOI: 10.21608/sinjas.2013.301163 | ||
| Abstract | ||
| The present study was conducted on fruitful Washington navel orange trees grown at a private orchard during 2009 & 2010 seasons to evaluate the influence of some bio and mineral compounds i.e., Nofaterin and Biomagic foliar spray in different combinations with N, P, K and fertilizers on growth, productivity, fruit quality and nutritional status of Washington navel orange trees. Each of the tested nine treatments improved all the evaluated parameters dealing with: 1- growth parameters (No. of shoots / one meter limb, shoot length and thickness, No. of leaves per shoot and leaf surface area) 2- fruiting measurements ( fruit set and fruit retention percentage and yield/tree), 3- Fruit physical properties (fruit weight , dimensions , shape index , juice volume and peel thickness ) or chemical properties (juice TSS %, acidity %, TSS /acid ratio , total sugars and Vitamin C content ), as well as leaf nutritional status (N, P, K, Ca, Mg, Fe, Mn and Zn). However, the beneficial effect varied greatly from one treatment to another. Anyhow, Biomagic + (NH4)2SO4 + K2SO4 at 1% + P2O5 at 100 ppm treatment was statistically the superior, followed descending by Nofaterin + (NH4)2SO4 at 1% + K2SO4 at 1% + P2O5 at 100 ppm treatment. However, the control (water spray) treatment had the least values for all tested vegetative and fruiting parameters. | ||
| Keywords | ||
| Bio & Mineral Compounds; citrus; Foliar spray | ||
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