الفهرس 
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Abstract
This investigation was conducted during two successive experimental seasons 2016/2017 on uniform in vigour thirty/three 10- years old Ewaise mango trees onto Succary mango rootstock . The trees are grown in a private orchard situated at Waborate El- Mataana village, Esna district, Luxor Governorate. The selected trees are planted at 6 × 6 meters apart (6 between rows and 6 between trees). The selected trees were irrigated through furrow (surface) irrigation system. The soil texture of the tested orchard is silty clay with a water table depth not less than two meters.
The selected trees (33 trees) were subjected to the normal and common agricultural and horticultural practices that already applied in the orchard except those dealing with the application of different nutrients, plant extracts, selenium and silicon.
The goal of this study was elucidating the effect of using some macro and micro nutrients applied via carboxylic acid and wheat seed sprout extract on fruiting of Ewaise mango trees grown under Upper Egypt conditions.
This study included the following eleven treatments from macro and micronutrients, applied via carboxylic acid and wheat seed sprout extract plant extracts, silicon and selenium.
1- Control treatment (spraying with water)
2- Spraying nutrients (NPKMgZnFeMnCuB) via carboxylic acid at 0.05%.
3- Spraying nutrients (NPKMgZnFeMnCuB) via carboxylic acid at 0.1%.
4- Spraying nutrients (NPKMgZnFeMnCuB) via carboxylic acid at 0.2%.
5- Spraying nutrients (NPKMgZnFeMnCuB) via carboxylic acid at 0.4%.
6- Spraying wheat seed sprout extract at 0.25 %.
7- Spraying wheat seed sprout extract at 0.5 %.
8- Spraying wheat seed sprout extract at 1 %.
9- Spraying nutrients (NPKMgZnFeMnCuB) via carboxylic acid at 0.05% with wheat sprout extract at 0.25%
10- Spraying nutrients (NPKMgZnFeMnCuB) via carboxylic acid at 0.1% with wheat sprout extract at 0.1%
11- Spraying nutrients (NPKMgZnFeMnCuB) via carboxylic acid at 0.2% with wheat sprout extract at 0.2%
Each treatment was replicated three times, one tree per each (33 trees for carrying out all treatments). Spraying of micro and macro nutrients and wheat sprout extract was done three times at growth start (first week of Mar.), just after fruit setting (third week of April) and at three weeks later (2nd week of May). Triton B as a wetting agent was added at 0.3 ml/ I water to all solutions. Foliar application was carried out till runoff (20 L/ tree).
Statistical analysis was done using randomized complete block design (RCBD) with three replicates, each with one Ewaise mango trees. Each block contained eleven treatments.
During the three seasons, the following parameters were recorded:
1. Vegetative growth characteristics namely length and thickness of spring growth cycle shoot, number of leaves / shoot and leaf area (cm)2.
2. Leaf chemical components namely chlorophylls a & b, total chlorophylls and total carotenoids (mg/ g F.W) and percentages of N, P, K and Mg (on dry weight basis).
3. Percentages of initial fruit setting and fruit retention.
4. Yield/ tree expressed in weight (kg.) and number of fruits/ tree.
5. Some physical and chemical characteristics of the fruits namely weight (g), height, diameter and thickness (cm.) of fruit, pulp weight%, T.S.S.%, total, reducing and non- reducing sugars %, total acidity (as g citric acid/ 100 ml juice), vitamin C content (as mg/ 100 ml juice) and total fibre%.
The nearly same summary obtained data could be summarized under the following topics:
1- Some vegetative growth aspects:
The four growth aspects namely length and thickness of shoot, number of leaves/shoot as well as area of leaf were positively affected by single and combined applications of nutrients applied via carboxylic acid at 0.05 to 0.4% and wheat seed sprout extract at 0.25 to 1 % relative to the control. Using wheat seed sprout was materially superior than using macro and micro nutrients in enhancing these parameters. The best results were recorded when all nutrients at 0.2 % and wheat seed sprout at 1 % were applied together.