Two filed experiments were carried out at a private farm in Behaira Governorate, Egypt during 2012 and 2013 summer seasons. Experiments aimed to study the effect of two widely marketing (commercial safe compounds). First, is a seaweed extract (with commercial name of sea weed) at 1, 2 and 4 ml/l while the second is a mixture of free amino acids (with plant origin and commercially name is sway) at 2,4and 8 ml/l and seaweed at 2 ml/l + amino acids at 4 ml/. The two compounds were applied as foliar spray three times on common bean plant (Phaseolus vulgaris L.) starting at 25 days of plant age with 10 days intervals between each spray and others. The obtained results clearly indicate that different applied treatments increased estimated or measured growth characteristics i.e., plant height, stem diameter, number of branches and leaves/ plant, total leaf area /plant, dry weight of shoots and specific growth rate as well as paralley increase of photosynthetic pigments and total chlorophyll SPDS with increasing seaweed and amino acid sprayed levels at the age of 65 days after sowing during 2012 and 2013 seasons. As for the yield and yield components i.e., number of pods/plant, pod weight (g) , number of seeds per pod, number of fully seeds /plant, , weight of 100 seeds (g), number of seeds/ plant, seed yield (g) /plant and the harvest index. Also, biochemical constituents of N, P, K, Mg, Ca, Fe, Zn, Total carbohydrates and crude protein in leaves at 65 days of plant age were existed in the two assigned seasons. In addition, the most effective treatments was that of sea weed at 2 ml/l combined with the amino acids at 4 ml/l was the most effective treatment in this respect.

Iron (Fe) is required for most metabolic processes, including DNA synthesis, respiration, photosynthesis, and chlorophyll biosynthesis; however, Fe deficiency is common in arid regions, necessitating additional research to determine the most efficient form of absorbance. Nano-fertilizers have characteristics that are not found in their traditional equivalents. This research was implemented on Washington navel orange trees (Citrus sinensis L. Osbeck) to investigate the effect of three iron forms—nano (Fe-NPs), sulfate (FeSO4), and chelated (Fe-chelated)—as a foliar spray on the growth, fruiting aspects, and nutritional status of these trees compared to control. The highest values of the tested parameters were reported when the highest Fe-NPs level and the highest Fe-chelated (EDTA) rate were used. Results obtained here showed that the spraying of the Washington navel orange trees grown under similar environmental conditions and horticulture practices adopted in the current experiment with Fe-NPs (nanoform) and/or Fe-chelated (EDTA) at 0.1% is a beneficial application for enhancing vegetative growth, flower set, tree nutritional status, and fruit production and quality. Application of Fe-NPs and Fe-chelated (EDTA, 0.1%) increased yield by 32.0% and 25% and total soluble solids (TSS) by 18.5% and 17.0%, respectively, compared with control. Spraying Washington navel orange trees with nano and chelated iron could be considered a significant way to improve vegetative growth, fruit production, quality, and nutritional status while also being environmentally preferred in the arid regions.

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This work investigated the effects of potassium mineral fertilizers, combined with biofertilizers (T1–T4 treatments) and the foliar spraying of seaweed extract (at 1 g/L, 2 g/L, and 3 g/L) on the vegetative growth characters, chemical constituents of foliage, and the yield and quality parameters of globe artichoke. The maximum height, and the fresh and dry weight of the leaves, was recorded in plants that received only soil with added potassium (T1 treatment) and sprayed with seaweed extract at 3 g/L. Furthermore, the highest number of offshoots per plant was registered in the T2 treatment combined with seaweed extract (3 g/L). T1 and T2 treatments resulted in the highest values of leaf N, P, K, and total carbohydrate content when combined with seaweed extract (3 g/L). The highest numbers of early, late, and total heads per plant were obtained for the T1 treatment and seaweed extract (3 g/L). Similarly, most of the head quality parameters were beneficially affected by the T2 treatment and seaweed extract (3 g/L). In conclusion, it is suggested that soil application of mineral potassium fertilizer (75% of RD) combined with biofertilizer (25% of RD) and the foliar spraying of seaweed extracts at 3 g/L, was most beneficial for the yield and quality parameters of globe artichoke plants.

Two field experiments in randomized complete Block design (RCBD) were conducted at the experimental farm, Faculty of Agriculture Moshtohor, Benha university, Egypt during 2016 and 2017 seasons to study the effect of Putrescine at 5 and 10 mg/L, Benzyl adenine (BA) at 20 and 40 mg/L and yeast extract at 50 and 100 ml/L on growth, photosynthetic pigments, phytohormones content, anatomical structures, flowering, characteristics; seed fuelling and yield of Soybeans (Glycine max L.) plants. Results showed that different applied treatments increased growth characteristics i.e., (plant height, leaf number, leaf area, branches number, fresh & dry weights as well as the photosynthetic pigments and the endogenous phytohormones content. Also, stem and leaf anatomy measurements were increased especially (stem and leaf vascular and transporter tissues. In addition, flower setting was increased with putrescine, BA and yeast extract during 2016 and 2017 seasons. Also, yield and its characteristics were increased especially upper fully seeds, seed yield weight/plant during both seasons.