Leaves extracts of Syzygium cumini (L) were collected to test their antimicrobial activity. The collected materials were extracted by petroleum ether, methanol and water by using different concentration (15% 10% and 5%). Were obtained and bioassay in vitro for its bioactivity to inhabit the growth of four types of bacteria,namely; (Staphlococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Bacillus subitils) and two types of fungi (Aspergillus niger, and Candida albicans). The extract of Syzygium cumini leaves showed different activity against the selected bacteria at all concentration levels. By using cup plate diffusion method, petroleum ether extract of Syzygium cumini leaves showed activity against E. coli only. Methanol extract showed variable activity against bacteria in different concentrations especially 15% concentration showed high activity against B. subtilis. Water extract showed variable activity against most of the tested bacteria. E. coli was found to be sensitive to all concentrations.

This study was conducted to determine the impact of sun light, UV and magnetized water on Dura Sorghum sp. variety plants the Sudanese main stable food. The morphological changes of the Sorghum plants in terms of plant height, color of leaves, growth and development was monitored. The impact of light stress on plants was done by isolating he plant from light for a period of time. The result showed that light stress resulted in retarding growth, yellowing of the leaves and finally plant death after a very short period time. Second the impact of UV on plants along different periods of time showed negatively effect. The effect of magnetized water on the plant indicated that magnetized water has a positive effect on Dura plant growth and development. Though light stress has a significantly negative impact on plant growth and could lead to its death.