A batch sorption experiments were carried out to study the role of biosorbent and nano-particles on removal of some heavy metals from aqueous solution. The rice straw waste was used as biosorbent material( by-product of agricultural activity). In addition, Nano-Hydroxyapatite (60 nm) and nano-Zero Valent Iron (25 nm) were used as nanoparticles. The batch sorption was done using rice straw waste (RSW) with three sizes as 0.125, 0.25 and 0.5 mm with Pb 2+ and Ni 2+ with concentrations up to 28.14 and 100 mg/l, respectively. Also, the sorption experiment was conducted using nano-particles (n-HAP and n-ZVI) and phosphate rock for Pb 2+ and Ni 2+ with concentration up to 20 mg/l for Ni and 18.0 mg/l for Pb. The results indicated that RSW (0.250 mm) was best size for heavy metals removal. The rice straw waste has more ability for retention of heavy metals such as Ni and Pb according to linear and Freundlich sorption models. Also, the results indicated that maximum sorption capacity of heavy metals was occurred on Nano-Hydroxyapatite (n-HAP) for both Pb and Ni. These results may be due to the functional groups found in Nano-Hydroxyapatite. When RSW mixed with n-HAP, the results indicated maximum removal percentage of heavy metals. The removal percentage of Pb (99.70%) was more than Ni (38.25%) indicated that the ability of Pb to bind with RSW or n-HAP more than Ni. The current results are very useful in the treatment of wastewaters for the removal of heavy metals, making them suitable for agricultural purposes. The present study recommends a future studies to understand the role of nanomaterials on removal the different heavy metals under different conditions.

Two field experiments were carried out during the summer seasons of 2018 and 2019, at the Experimental Farm of Faculty of Agriculture (Saba-Basha) at Abees area, Alexandria University, Egypt, to study the effect of foliar application of the various levels of both BA as cytokinin and Boron on vegetative growth, yield, and quality of ' Hermes' potato cultivar. Cut seedy explants were, approximately, 40 g in weight and each seedy explant contained 2 eyes planted on the 20 th February du ring both seasons. Cutting seeds were planted under a drip irrigation system at 30 cm apart in the row and 0.8 m width in dry soil then irrigated. The experimental plot consisted of two rows with 10.00 m long and 0.80 m width; making an area of 16.00 m 2 .The experimental design was a split-plot-design in a randomized complete block. The main plots allocated for boron levels (0, 10, 20, and 30 mg l -1 ). Whereas, the sub-plots were occupied by 6-benzyl adenine levels (0, 10, 20, and 30 mg l -1 ). The results indicated that foliar application of boron at 30 mg l -1 gave the highest average values of No. of tubers per plant, tuber fresh weight (g plant -1 ), No. of tubers per 10 kg, total yield per plant (g) as well as total yield; (ton fed -1 ) compared to control plants during both seasons of the study. On the other side, foliar application of cytokinin at 30 mg l -1 recorded the highest of No. of tubers per plant, tuber fresh weight (g plant -1 ), No. of tubers per 10 kg, total yield per plant (g) as well as total yield; (ton fed -1 as compared with control treatment and the other treatments, during both seasons.Results of this characteristic revealed that applying boron at 30 mg l -1 increased significantly the potato chips defect (%), tuber firmness, tuber dry weight (%), and specific gravity compared to the control treatment during both seasons. Besides, applying cytokinin at 30 mg l -1 , produced higher potato chips defect (%), tuber firmness, tuber dry weight (%), and specific gravity as compared with untreated plants (control), during both seasons. Foliar application of boron at 30 mg l -1 recorded the best results of tubers quality content i.e., average values of starch, tuber sugars, TSS, and ascorbic acid of potato tuber as compared with control treatments, during both seasons, also, potato plants treated with 30 mg l -1 of cytokinin gave the highest mean values of the average values of starch, tuber sugars, TSS and ascorbic acid of potato tuber as compared with control treatments, during both seasons.

The present work aims to study the potential effect of Moringa Oleiferato (MO) seed oil and seed ethanol extract to give more protection against hyperlipidemia . Thirty male albino rats were used over 30 days period. The animals were divided into (5) groups, wherein groups number (1) represent control which were fed basal diet, while group number (2) was received high fat diet to serve as hyperlipidemic group. Other three groups allowed to feed high fat diet supplemented with seed oil , seed ethanol extract and atrovastatin, group number (3) treated simultaneously with moringa seed oil, fourth group treated with moringa seed ethanol extract while the last group treated with atrovastatin. At the end of the experimental period, blood samples were collected to determine lipid profile and determine the kidney functions include urea nitrogen and creatinine. Also liver was removed surgically for histopathological observation. From the obtained results we concluded that group of rats fed on high fat diet were considered as a major risk factor for hyperlipidemia disease. Our results could be summarized that moringa seed oil and moringa seed ethanol extract were considered the best for causing a reduction of TC, TG and LDL . Also, kidney function has been improved and there were significant reduction urea and creatinine than that of positive control group. It could be concluded that moringa seed oil and moringa seed ethanol extract under study are useful for the treatment of hyperlipidemia.

The present study was designed to investigate the chemical composition of Swietenia mahagoni seeds , identification of phenolic compounds in acetone extract in mahagoni seeds, studying the fatty acids composition, and evaluation of mahagoni extracts and oil on the glucose level of diabetes rats. The chemical composition of seeds were moisture (3.6 %), crude fiber (14 %), ash (3%), crude protein (13 %), crude fat (7.4 %) and total carbohydrate (62.6 %). The fatty acids composition were lignoceric acid (C24) 38.23% followed by stearic acid (C18) 35.69%, meanwhile the unsaturated fatty acid was linoleic acid (C18:2), which accounted for ( 26.08 %). The phenolic compound in acetone extract showed that menthol and nerolidol are the major phenolic ( 12.32 and 10.06 % respectively ). Ttreatment with Swietenia mahagoni seed extracts and oil decreased significantly glucose level , also decreased significantly GOT , GPT , ALP , urea , creatinine and malondialdehyde level as compared with hyperglycemic group .

A field experiment was carried out to ivestigat the impact of irrigation deficit on Quinoa (chenopodium quinoa Willd) variety Chipaya. The sowing date was Nov. 11, 2018, and the harvesting date was March. 17, 2019.The irrigation regimes (irrigation deficit) were in the rate of 40, 60, 80, and 100% of the reference evapotranspiration (ET0) as compared with rainfed irrigation as control. The experimental design was a Randomized Complete Block Design with three replicates. The results indicated that the irrigation regimes had a significant effect on Quinoa productivity. The best effect of irrigation regimes on the gross seed yield of quinoa was recorded with 100% of ET0 irrigation regime corresponding to an increase by 155.56% over the rainfed irrigation. Seed yield reached the highest values of 0.616 ton/fed at 100% of ET0,.Also, there were no significant differences between irrigation at 100 and 80 % of the ET0 irrigation regime. Seed weight per plant, and per m 2 had the highest values with 100% of ET0. It increased by about 216.70 and 216.68% over the rainfed irrigation. The total applied water (TAW) were 931.4, 796.6, 658.0, 523.3, and 285.6 m 3 /fed for irrigation treatments of 100, 80, 60, and 40% of ET0 and rainfed irrigation, respectively. The irrigation water-use efficiency (IWUE) or water productivity (WP) as kg grain/m 3 of applied water reached the values of 0.681, 0.655, 0.806, 0.778, and 0.712 kg/m 3 for 100, 80, 60, 40% of ET0, and rain-fed treatments, respectively.Irrigation at 100 or 80% of ET0 gave the highest seed yield. Nevertheless, irrigation at 60% of ETO gave the highest water productivity (IWUE).