during summer season 2011 and winter season2011/ 2012 to evaluate the effect of some soil management practices i.e., mole drain filled back with sand at two diameter 7.5 cm and 10 cm under three distances 4, 6 and 8 m individually or combined with some soil amendments application;) gypsum, sand and aluminum sulfate( on improving some physical and chemical soil properties. Also, use of the continuous leaching processes for salt removal after each rotation of leachate 25, 75, 125 and 275 days. The soil samples were taken to determine EC, pH and ESP as well as at the end of experiment. Also, the hydraulic conductivity, bulk density and total porosity were determined. The results indicated that the construction of mole drain filled back with sand individually after four rotations of leachate processes led to significant decrease in the values of EC, pH and ESP compared with the initial values. These decreases were more effective with application of soil amendments i.e. (gypsum, sand and aluminum sulfate) combined with the mole drain compared with the empty mole drain . It was observed that at the end of the experiment after four rotations leachate processes, the mole drain at different spacing which filled back with sand combined with soil amendments application significantly decrease the values of bulk density and increase the values of hydraulic conductivity and total porosity compared with the initial values. The superiority in improving physical properties (hydraulic conductivity, bulk density and porosity of the studied soil was recorded with mole drain filled back with sand combined with the soil amendment as aluminum sulfate or gypsum compared with sand after fourth rotations of leachate.

A field experiment was carried out in saline sandy clay soil of a private farm at village 7, Gelbana (Sahl El-Tena plain) during two successive winter seasons of 2006-2007 and 2007-2008, to study the effect of different forms (ammonium nitrate (AN), ammonium sulfate (AS) and urea (U) at different rates (i.e., 70, 45 and 35 kg N/ fed) each alone and /or in combination with bio-fertilizer on faba bean productivity.Results revealed that the applied fertilization treatments led to increase available macro and micronutrient soil contents. Such favored effect was reflected on plant nutrient contents, protein content, yield and its components and were significantly increased. In this connection, it could be deduced that urea fertilizer was of the highest effect, whereas AN was of least effect, while AS resulted in a moderate effect. Also, bio-fertilizer could partially substitute a considered portion of the mineral nitrogen. Since, bio-fertilization had been proved as an approach quite enough to improve plant quality, reduce the mineral nitrogen cost, as well as they are environmentally safe and eco-friendly.

A field experiment was carried out on a calcareous soil at Abou massou village (48 km southwest to Alexandria) with four vegetable crops cultivated in succession (garlic, , cauliflower and jews mallow) was conducted to investigate how application rates of plants residues trim farm operations compost and potassium phosphate, also, the vegetable dry matter & their NPK uptake can affect the yield. The study also investigated the resultant effects on soil fertility. Irrigation was up to field capacity using canal water. Results indicated that soil salinity, soluble chlorides and sodium decreased sharply after garlic and gradually after that, while bicarbonates increased sharply during the first months and decreased gradually at a level higher than the start point. Sulphates, calcium, magnesium and potassium decreased over the time. Rates of compost application were without pronounced effect on total soluble salts or soluble cations and anions with the exception of bicarbonates. Rates of plants residues trim farm operations compost and potassium phosphate included also vegetable dry matter and their NPK uptake in addition to soil properties and vegetable yields through 20-months were also studied. Results indicate that each of the use compost rates were effective in increasing dry matter, N and P uptake by the three vegetable crops over the control. The same trend was noticed also at the phosphate and potassium treatments. It may be concluded that vegetable crop production in calcareous soil depend on the direct and residual effect of organic and mineral N and P fertilization for 20 months period and K fertilization for about three quarters of this period. Also, the compost application might improve the soil properties while the addition of phosphorus and potassium enhances the availability of nutrients in the soil throughout the cropping period.

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Die Reduktion des Ketons (Ia) mit Hydrazinhydrat und Diäthylenglykol gibt das Äthylderivat (Ib), das bei Oxidation mit C103 /Essigsäure in das Benzophenon (IIa) übergeht.