الفهرس 
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Abstract
The objective of this study was to investigate the effects of different sources of sulfur fertilizer on the growth, metabolism and productivity of broccoli plant (Brassica oleracea L. var. italic), developing on different types of soil, which contain clay and sand mixed at different ratios. The source of sulfur used in the present work was either organic fertilizer either as plant residue (composite tea), animal residue (chicken manure) or inorganic fertilizer (potassium sulfate) or industrial waste water. This study includes investigating the effects of the above different fertilizers on the growth criteria and content of photosynthetic pigments, carbohydrate content in shoots and root system in addition to the content of potassium, sodium, calcium, magnesium, iron and sulfur in the shoots and roots of broccoli plants during different stages of growth. Also, the effect of the previously mentioned fertilizers on the productivity of the crop (inflorescences, or the head); output from these plants and the content of the items of the nutritive value, were followed. The study was conducted under the effect of different concentrations of organic fertilizer composite tea (tea: water 1:3), chicken manure (52.3 g/10 kg soil) and inorganic fertilizer (potassium sulfate at: concentrations: 2.5, 12 and 50 mg / pot), in addition to the use of raw industrial waste water for irrigation during the different stages of growth. The results of experiments have shown that after a statistical analysis of response of the growth of broccoli and the subsequent some physiological changes depend on the type and concentration of fertilizer used, and the type of soil used, and the age of treated plants. The results obtained in this research can be summarized in the following points: * The use of both organic and inorganic fertilizers and irrigation with industrial waste water led to an increase in height, fresh and dry weights and thickness of stem, number of leaves per plant, also have led to an increase in height and fresh weight and dry weight of the root system compared with untreated samples (control). *The addition of various fertilizers led to a significant increase in photosynthetic pigments compared to untreated samples. * The addition of various fertilizers led to significant changes in carbohydrate content in both shoot and root of treated plants. It has been found that these changes depend on the type of fertilizers and the stage of plant growth. * The results showed that treatment of organic fertilizers had a positive impact on the growth and metabolism of plant more than inorganic fertilizers. The chicken manure treatment was better than the treatment with composite tea. * Treatment with industrial waste water in irrigation has the greatest impact on plant growth compared with other treatments. * The results showed that the potassium , sodium , calcium , magnesium, and iron contents in growing plants in different types of soil is closely linked to the stage of plant growth as well as the plant organ and the type of soil used and also on the type and concentration of various fertilizers. * The sulfur interactions included changes: in the total sulfur content, sulfur requirements, sulfur uptake and rate of sulfur transport from root to shoot. As well as, the change in the distribution of the sulfur in different plant organs: roots and shoots. Above parameters relied mainly on the soil type and various treatments.* Organic materials differ in their efficiency as fertilizers according to their origin, chemical composition and processing techniques. It was found of vital interest to study the use of chicken manure. * The results also showed that it is possible to use soil (1: 4) (clay: sand v/v) and the irrigation with industrial wastewater to achieve the best results of most parameters investigated.