Effect of Moringa Extracts and Diatoms Foliar Applications on Washington Navel Orange and Murcott Tangor Transplant Performance

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This study was carried-out during two successive seasons (2015 and 2016) under green-house for citrus nursery seedlings at Hort. Res. Ins. garden, Giza - Egypt. The main goal of this investigation to study the “ effect of foliar applications of Moringa leaves, Moringa seeds or Moringa “leaves & seeds “ extract, Diatoms and their combinations as a bio- substances on some morphological and bio-chemical parameters and leaf mineral contents of (Washington navel orange (C. sinensis) and Murcott tangor (C. reticulate) transplants {budded on sour orange (C.aurantum) rootstock}.Results revealed that all Moringa leaves, seeds and Diatoms or their combinations significantly improved the most parameters of both Washington navel orange or Murcott tangor under this study in compared to the control treatment during the two seasons. Moreover, Moringa leaves extract plus Diatoms (T6) gave the highest Washington navel orange scion height; Moringa seeds extract (T3) gave the highest Washington navel orange scion stem diameter, leaf Zn and Mn content and Murcott tangor number of leaves / transplants values; Moringa leaves extract (T2) gave the highest Washington navel orange leaf area and Murcott tangor leaf dry matter percentage, leaf chl.a&b and leaf total Indols; Moringa (leaves + seeds) extract (T5) gave the highest Washington navel orange scion dry matter percentage and Murcott tangor leaf N content percentage; Moringa seeds extract plus Diatoms (T7) gave the highest Washington navel orange leaves and shoots total carbohydrates and leaf P content percentage and Murcott tangor leaf K content percentage; Moringa (leaves & seeds) extract plus Diatoms (T8) gave the highest Washington navel orange leaf carotenoids and the control treatment (T1) gave the highest Washington navel orange and Murcott tangor leaf Phenols and Fe content, values during the two seasons under this study.

A. M. Abd Al Rhman
Hussein S. Ahmed
Shaimaa A. Mohamed
Journal of Horticultural Science & Ornamental Plants