الفهرس 
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Abstract
production and some chemical constituents to four levels of compost (0, 7.5, 10.0 and 12.5 ton/fed.) in the main plots. While, seven treatments of salicylic and/or ascorbic acids. (salicylic acid at 100 and 200 ppm, ascorbic acid at 100 and 200 ppm, salicylic acid at 100 ppm + ascorbic acid at 100 ppm, salicylic acid at 200 ppm + ascorbic acid at 100 ppm, salicylic acid at 200 ppm + ascorbic acid at 200 ppm and the control). Occupied the sub-plots, in addition to the interaction between the two factors.
Obtained results could be summarized as follows :
1- Effect of compost treatments on:
1-1- Vegetative growth parameters :
Vegetative growth characters (leaf length, leaf area, number of leaves/plant, fresh and dry weights of leaves/plant) were considerably increased as a result of fertilizing gladiolus with the three levels of compost (7.5, 10.0 and 12.5 ton/fed.) in comparison with control treatment. The high level of compost (12.5 ton/fed.) gave the highest values in both seasons.
1-2- Flowering parameters :
Flowering parameters including spike length, length of flowering part of spike, spike diameter, spike fresh and dry weights, number of florets/spike, lower floret diameter and fresh and dry weights of single floret were remarkably increased due to different compost fertilization
treatments comparing with control treatment. The highest values for all flower parameters were resulted from compost at high level (12.5 ton/fed.).
1-3- Corms and cormels production :
All parameters of corm and cormels (corm diameter, fresh and dry weights of corm, cormels number and fresh and dry weights of cormelets) were significantly increased due to fertilizing gladiolus with all used levels of compost comparing with control treatment. The increase in these characters was gradual a parallel to the gradual rise in compost level from zero to 12.5 ton/fed.
1- 4- Chemical composition :
Photosynthetic pigments (chlorophyll a, b and carotenoids contents), leaves nitrogen, phosphorus and potassium percent were greatly promoted due to the three levels of compost. The maximum values were recorded at the highest level of compost (12.5 ton/fed.).
2- Effect of salicylic and/or ascorbic acids treatments on:
2-1- Vegetative growth parameters :
All vegetative growth parameters (leaf length and area, number of leaves/plant and fresh and dry weights of leaves/plant) were significantly increased due to use all salicylic acids and/or ascorbic acids treatments comparing with control treatment. Among the six tested treatments, the combined treatment of salicylic and ascorbic acids, each at low concentration (100 ppm) followed by ascorbic acid individually treatment at 200 ppm resulted the highest values without significant differences between them.
2-2- Flowering parameters :
Using any level of salicylic acids and ascorbic acid alone or together led to significantly increased in the spike length, spike diameter, flowering part of spike, fresh and dry weights of spike, as well as, number of florets, floret diameter, floret fresh and dry weights in comparison with control treatment. Salicylic acid at 100 ppm + ascorbic acid at 100 ppm followed by ascorbic acid at 200 ppm gave the highest values during both seasons.
2-3-Corms and cormels production :
All corms and cormels parameters, namely corm diameter, fresh and dry weights of corm, cormels number and fresh and dry weights of cormels/plant were significantly increased by used all treatments of salicylic and ascorbic acids and their two combinations in comparison with control treatment. The highest values were obtained due to the treatments of salicylic acids at 100 ppm + ascorbic acid at 100 ppm followed by ascorbic acid at 200 ppm then salicylic acid at 200 ppm in both seasons.
2-4- Chemical composition :
Chlorophyll a, b and carotenoids contents in the fresh leaves of gladiolus plants were significantly increased in comparison with control. The highest values were obtained with plants received salicylic acid and ascorbic acid, together, each at low concentration (100 ppm) followed by salicylic acid at 200 ppm alone without significant difference between them.
All used six treatments significantly promoting the percentages of N, P and K in the dry leaves of plant in comparison of control.
The treatment of salicylic acid + ascorbic acid, each at 100 ppm followed by ascorbic acid (200 ppm) then salicylic acid (200 ppm)
resulted the highest percentages of nitrogen comparing with other treatments without significant differences between the first and second treatments in both seasons.
The highest values, in both seasons, of phosphorus were obtained due to the treatments of salicylic acid (100 ppm) + ascorbic acid (100 ppm) followed by salicylic acid (200 ppm), then ascorbic acid (200 ppm) without significant differences between such superior three treatments.
Salicylic acid (100 ppm) + ascorbic acid (100 ppm) followed by ascorbic acid (200 ppm), then salicylic acid (200 ppm) treatments recorded the highest percentages of potassium without significant differences among them in both seasons.
3- Effect of the interaction treatments on:
3-1- Vegetative growth parameters :
The interaction between compost, salicylic and ascorbic acids treatments was significant influence for all vegetative growth parameters. The highest values were resulted from fertilization gladiolus with compost at 12.5 ton/fed. and spraying plants with salicylic and ascorbic acids together, each at 100 ppm or ascorbic acid at 200 ppm alone. 3-2- Flowering parameters :
The interaction between compost, salicylic acid and/or ascorbic acid treatments was significant for all studied flowering parameters, except for fresh and dry weights of single floret in both season. The highest values were obtained with compost at 12.5 ton/fed. in combination with salicylic acid (100 ppm) plus ascorbic acid (100 ppm) or with ascorbic acid at 200 ppm).
3-3- Corms and cormels production :
The interaction between compost, salicylic and/or ascorbic acids treatments was significant for all studied parameters of corm and cormels
production in both seasons. The highest values were obtained with compost (12.5 ton/fed.) in combination with salicylic acid (100 ppm) + ascorbic acid (100 ppm) or with salicylic acid (200 ppm) in some cases. 3-4- Chemical composition :
The interaction treatments were significant for the three photosynthetic pigments contents (chl. a, b and carotenoids) and the percentages of nitrogen and phosphorus, while not significant for potassium percentage.
The highest contents of chlorophyll a, b and carotenoids were obtained with the interaction treatments of 12.5 ton/fed. in combination with salicylic acid (100 ppm) + ascorbic acid (100 ppm) or salicylic acid at 200 ppm.
The highest N % was obtained by used compost (12.5 ton/fed.) * salicylic acid (100 ppm) + ascorbic acid (100 ppm) or compost (12.5 ton/fed.) * salicylic acid (200 ppm).
The best interaction treatments for phosphorus were compost at 12.5 ton/fed. in combination with salicylic acid plus ascorbic acid, each at 100 ppm or with 200 ppm of salicylic acid or ascorbic acid or with compost at 10 ton/fed. with salicylic acid + ascorbic acid (each at 100 ppm) or with salicylic acid (200 ppm).