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Novel azodye ligands 2-Amino-3-(4-chloro phenylazo )-7-(4-fluorophenyl)-5-(thiophen-2-yl)-6,7-dihydropyrazolo (1,5-a) pyrimidine ( L 1 ) and 2-Amino-3-(4-chlorophenylazo )-5,7-Di(thiophen-2-yl)-6,7-dihydropyrazolo(1,5-a) pyrimidine ( L 2 ) and their complexes with Fe (III) , Co (II), Ni (II) and Cu (II) have been synthesized. The stereochemistry and the mode of bonding of the complexes were achieved based on elemental analysis , IR, UV-Vis, 1HNMR, MS and ESR spectroscopy as well as (TGA). Octahedral structure proposed for geometry of the chelates based on their electronic spectra and magnetic susceptibility. The metal complexes show no bleeding and tinting strength properties for ink synthesis.

This study was carried out to investigate the effect of several agro-industrial wastes and mixed substrates with rice straw (w/w) on production of ( Pleurotus ostreatus ). Mixed substrates with rice straw at rate 1:1 by weight showed higher effect on the first stage, second and third stages. Data indicated that the time for production ranged from 12 -25.5, from 22 -52.25 and from 25 -55 days respectively. When mixed substrates with rice straw the results were found within the period ranged from 11.75 -18.5, from 22.5 -28.5 and from 26.5 -32 days respectively. Mixed substrates with rice straw reduce the first stage time of oyster compare with the control substrates. Therefore, reduce pinheads and fruiting bodies formation period. The mixed substrates rice straw with waste paper (RS+WP) gave the maximum of oyster mushroom produced per 1 kg dry ~ 578.50 g and gave the maximum biological efficiency 57.85 %. Finally, mixed substrates with rice straw increase in biological efficiency of P. ostreatus over control substrates.

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