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Abstract
The biochemical constituents were investigated for 10 seaweed. The study of some organic compounds such as tannins, Alkaloids, sterols, saponins and Flavonoids were investigated. Whereas, the crude lipid was average from 12.5 ± 0.44 to 3.1± 0.1%, twenty one fatty acids were found from which six of them were unsaturated. Total soluble sugars and non soluble sugars were estimated. The highest concentration of alginic acid was 31 + 0.9 detected in S. latifolim while the lowest one 4.5 ± 0.17% reported in U. lactuca. Mannitol contents were ranged from 21 + 0.58 to 9.4 ± 0.2. G. dendroides reported the highest concentration of total protein. Amino acids were determined by the TLC plate method. Ash content, major elements (Na, Ca, K, Mg and P), and some heavy metals (Fe, B, Pb, Mn, Zn, Co, Ni, Cu, Cd and Se) were recorded.
The effect of Halimeda opuntia and Sargassum latifolium on the growth of broad bean and wheat as a soil fertilizer powder mixed with the soil (dry or fermented) and as liquid fertilizer used as foliar sprays or for soil irrigation in pot experiment were studied. It showed that foliar spray, irrigation with extract and the fermented powder respectively were the preferable algal treatment. Field experiment in Ismaillia carried out to study the effect of three algal species for broad bean and wheat by using seaweed extract as foliar sprays, which increased all growth parameters and pigment content for the two plants. Yield parameters for broad bean also increased specially seed yield (12.16 ard./fed at concentration of 0.6%), while control reported 9.33 ard./fed. The weight of 100 seed at concentration of 0.6% gave 80.4 g, whereas the control recorded 74.03 g. Wheat grain yield increased from 9.23 (control) to 14.04 ard./fed at concentration of 0.6%. Weight of 1000 grain increased from 45.13 g (control) to 51.57 g at concentration of 0.6%. Seeds and grains total carbohydrates, total protein and their NPK level, also were increased.