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Profitable prospective of rocket plant is progressively growing recently. Hence an experiment was conducted in open field to evaluate the effect of chicken manure, nano iron (Fe), nano zinc (Zn) and combination of them on morphological, fresh weight and seed yield, photosynthetic rate, transpiration rate, water use efficiency and chemicals constituents represented in macro and micro elements, plant pigments, total phenolics, total carbohydrate, alkaloids, tannins, flavonoids, ascorbic acid, crude protein, total fatty acids, indole acetic acid (IAA) and abscisic acid (ABA) hormones, oil seed yield and methylthiobutyl- isothiocyanate as main sulphur content in essential oil of Eruca sativa Mill. compared to chemical fertilisers (NPK) as control. Results revealed that, nano Fe and Zn treatments either alone or in combination with manure had the upper hand, where significantly increased almost all parameters under study in comparison with control. The outcomes of present research gave emphasis to global warning about pollution of chemical fertilisers and safety production.

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The present experiment was carried out during 2007/2008 and 2008/2009 successive seasons using sweet pepper (Capsicum annuum L.) cv. Gedeon cultivated within a part of a double-span screen-house at Dokki protected cultivation site, Central Laboratory for Agricultural Climate (CLAC), Agricultural Research Center (ARC).This investigation aimed to study the effect of nitrogen concentrations and irrigation levels on growth and yield of pepper. Three nitrogen concentrations (150, 200, and 250 ppm) and three irrigation levels [100%, 120% and 140% of crop evapotranspiration (ET c )] with three replicates were applied in a split plot design.The results showed that nitrogen concentration at 200 ppm improved the number of leaves, total leaf area and P content. While, yield characteristics increased with N concentration at 150 ppm. Moreover; increasing irrigation level to 140% of ET c led to the highest vegetative growth while the highest yield characteristics and K and Mg contents were recorded with irrigation level at 120% of ET c . The highest P content was recorded with irrigation level at 100% of ET c . However, the effect of interaction showed that, increasing vegetative growth recorded at 200 ppm N combined with 140% irrigation level except total plant fresh and dry weight and Vitamin C which, increased with 250 ppm nitrogen concentration combined with 140% of ET c irrigation level treatment. Nitrogen concentration 150 ppm combined with irrigation level of 120% treatment increased significantly yield characteristics and chlorophyll and K contents in both seasons.