A Lab. project generate Organic fertilizers from synthetic cheap algae
Project title – Lab project generate Organic fertilizers from synthetic cheap
algae for Lettuce Plant agriculture

1. Executive Summary
The overall goal of the project is to improve soil fertility, plant nutrient required for obtaining good yields and leads to less environmental pollution using cheap available algae _Seeds of Lactuca sativa were germinated in culture medium containing microalga (Chioreila vulgaris) and grown for 3, 6, 9, 12 and 15 days in order to study its effect on growth parameters and some physiological response of seed germination and growth. In general, microalgal treatment significantly increased the growth with a significant decrease in soluble carbohydrate, soluble protein and total free amino acids compared with those of the control (sterilized culture medium) of seed germination. Addition of microalga to the culture medium or soil significantly increased fresh and dry weight of seedlings as well as pigments content. The best treatments were 2 and 3 g dry alga kg-1 soil.

2. Background and Justifications
In Egypt, soil fertility is diminishing gradually due to soil erosions, loss of nutrient, accumulation of salts and other toxic elements, water logging and un-balanced nutrient compensation. Organic wastes and Bio-Fertilizers are the alternate sources to meet the nutrient requirement of crops and to bridge the future gaps. Farming regions that emphasizing heavy chemical application led to adverse environmental, agricultural and health consequences. Many efforts are being exercised to combat the adverse consequences of chemical farming. The bio-fertilizer, organic manuring and bio- control of agricultural have emerged as a promising component of integrating nutrient supply system in agriculture. Microbiological fertilizers are important to environment friendly stainable agricultural practices (Bloemberg et al.,2000). Bio-fertilizers include mainly the nitrogen fixing, phosphate solubilizing and plant growth- promoting microorganisms (Goel et al., 1999). Among bio-fertilizers benefiting the crop production are Azotobacter, Azospirillium, blue green algae, Azolla, P- solubilizing micro organisms, mycorrhizae and Sinorhizobium (Hegde et al., 1999). Green manures were also found to stimulate root growth and produce good yields (Boussiba, 1987; Mandimba et al., 1998). Dry green algae contain high percentage of macronutrients, considerable amount of micronutrients and amino acids (El Fouly et al., 1992;Mahmoud, 2001). They can be conveniently produced on sewage and brackish water and partially substituted the chemical fertilizers to avoid environmental pollution.

… to be continued Objects & Facts

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