No abstract

to investigate the effect of different sources and rates, of P, Zn and Fe as well as organic manure on corn plants grown in both alluvial and calcareous soils. Two surface soil samples (0 -30 cm) were collected from two locations. A) alluvial soil from Experimental Farm of the Faculty of Agriculture, Minufiya University, Shibin El-Kom. B) calcareous soil from Nubaria farm, Beheria Governorate. Each polyethylene pot (15 cm diameter) was filled with 2 kg soils and planted with five grains of corn plant (Zea mays L.). After 14 days from planting the plants thinned to three plants per pot. The pots were irrigated to keep soil moisture at approximately 60% of the water holding capacity. The Farmyard manure (FYM) was added at (0, 1 and 2%) P-was added at (0, 15 and 30 ppm, P 2 O 5 ) of superphosphate and Triplephosphate. The Farmyard manure and phosphatic fertilizers were added before planting. The third part was treated with zinc at rates of 0, 10 and 20 ppm as zinc sulphate and Zn-EDTA. The fourth part was treated with iron at reates of 0, 15 and 30 ppm as iron sulphate and Fe-EDTA from planting the plants were harvested and dried at 70°C weighted, ground and digested for chemical analysis. The application of FYM at rates of 1 and 2% to the both alluvial and calcareous soils caused a significant increase on dry matter yield of corn plants. The highest values of dry matter yield was found in alluvial soil. The additions of FYM to both soils increased the Zn and Fe uptake by corn plants and availability of DTPA extrable Zn and Fe. The application of phosphatic fertilizers increased the dry matter yield of corn plants grown in both alluvial and calcareous soils, the dry matter yield of corn plants with triplephosphite applicat on was higher then those with super phosphate in alluvial soil, while the reverse was true in calcareous soil. The Zn and Fe uptake by corn plants were obviously higher on alluvial soil than those on calcareous one with P application. The application of P fertilizers decreased the DTPA-extractable Zn and Fe soils in used. The highest dry matter yield values of corn plants were obtained by Zn addition as Zn-EDTA treatment than ZnSO 4 in both alluvial and calcareous soils. The values of micronutrients (Zn and Fe) uptake by corn plants with Zn-EDTA were higher than ZnSO 4 in both alluvial and calcareous soil. The corn plants were more responsed by Zn-EDTA in calcareous soils. Application of Zn fertilizers increased the available Zn in both alluvial and calcareous soil. Addition of Zn fertilizers increased the DTPA-extractable Zn. While decreased the DTPA extractable Fe and Cu. The addition of Zn-EDTA recorded higher amounts of available micro elements than those obtained by using ZnSO 4 in both alluvial and calcareous soil. The application of Fe at rates of 15 and 30 ppm in both sources resulted a significant increases in the dry matter yield of corn plants grown in both alluvial and calcareous soils. The Fe-EDTA gave higher dry matter yield as compared with FeSO 4 . The micronutrients uptake was mar...

to investigate the effect of different sources and rates, of P, K and organic manure on corn plants grown in both alluvial and calcareous soils. Two surface soil samples (0 -30 cm) were collected from two locations. A) alluvial soil from experimental farm of the Faculty of Agriculture, Minufiya University, Shibin El-Kom. B) calcareous soil from Nubaria farm, Behera Governorate. Each polyethylene pot (15 cm diameter) was filled with 2 kg soils and planted with five grains of corn plant (Zea mays L.). After 14 days from planting the plants thinned to three plants per pot. The pots were irrigated to keep soil moisture at approximately 60% of the water holding capacity. The organic manure was added at 0, 1 and 2%. P was added at (0, 15 and 30 ppm, P 2 O 5 ) of superphosphate and Triplephosphate. The organic manure and phosphatic fertilizers were added before planting. Potassium was added at 0, 24 and 48 ppm K 2 O of potassium sulphate and potassium chloride. After 45 days from planting the plants were harvested and dried at 70°C, weighted, ground and digested for chemical analysis. The application of FYM at rates of 1 and 2% to the both alluvial and calcareous soils caused a significant increase in dry matter yield of corn plants. The values of dry matter yield in alluvial soil, were higher than those obtained in the calcareous soil. The additions of FYM to both soils increased the N, P and K uptake by corn plants. The application of FYM increased the availability of P and K in used soils. The application of phosphatic fertilizers increased the dry matter yield of corn plants grown in both. The dry matter yield of corn plants with triplephospate application was higher than those with superphosphate in alluvial soil, while the reverse was reverse was true in calcareous one. The N, P and K uptake by corn plants were obviously higher on alluvial soil than those on calcareous one with P application. The application of phosphate fertilizers increased available P and slightly increased available K in used soils. Available P and K in alluvial soil were higher than those in calcareous one. Application of potassium sulphate was more effective in increasing dry matter yield of corn plants than potassium chloride in both soils. The absolute values of N, P and K uptake by corn plants by K 2 SO 4 application were higher than those treated with KCl-fertilizers. Application of potassium fertilizers increased the available K in both used soils and slightly decreased availability P in alluvial soil but there is no effect in calcareous soil.

The current study was carried out as a pot experiment at the Experimental Farm, Faculty of Agriculture, Menoufia University during winter growth season of 2015 -2016 to study the individual and combined effect of inorganic and organic fertilizations and Si application on barley plant irrigated by saline water under sandy soil conditions as well as sandy soil chemical properties and its content of available macro-and micronutrients and silicon. The used pots were divided into two main groups. The soil in the first main group no received farmyard manure (FYM) but the second one treated byFYM at rate of 3% . Both N and P fertilizers were add at its recommended doses. i.e 134 kg / fed and (200 kg/fed) at ammonium nitrate (33 % N) and super phosphate (15.5 % P2O5) respectively. The treatments of FYM and P were carried out and good mixed with sandy soil before planting. Foliar application of silicon was carried as potassium silicate 400 liter / fed "25% SiO2 + 10% K2O" where foliar solution of micronutrients applications Foliar application of Fe , Zn and Mn mixture was carried at 400 liter / fed " 12 % , 12% and 13 % " respectively in EDTA form .The obtained data showed that, there are a significant increase in the dry matter yield (g /pot) of barley plants (shoots and roots) as a result of the studied treatments. Also , there are an increase in plant content of N , P, K, Fe , Mn , Zn and Si . The obtained data show also EC values in the soil treated by organic application were higher than that recorded with the initial soil before planting. On the other hand soil EC was decreased as a result of inorganic application alone. Also the pH and CaCO3 values and there were an increase in soil content of OM ,

The current study was carried out as a pot experiment at the Experimental Farm, Faculty of Agriculture, Menoufia University during winter growth season of 2015-2016 to study the individual and combined effect of inorganic and organic fertilizations and Si application on barley plant irrigated by saline water under sandy soil conditions as well as sandy soil chemical properties and its content of available macro-and micronutrients and silicon. The used pots were divided into two main groups. The soil in the first main group no received farmyard manure (FYM) but the second one treated by FYM at rate of 3%. Both N and P fertilizers were add at its recommended doses. i.e 134 kg / fed and (200 kg/fed) at ammonium nitrate (33 % N) and super phosphate (15.5 % P2O5) respectively. The treatments of FYM and P were carried out and good mixed with sandy soil before planting. Foliar application of silicon was carried as potassium silicate 400 liter / fed "25% SiO2 + 10% K2O" where foliar solution of micronutrients applications Foliar application of Fe , Zn and Mn mixture was carried at 400 liter / fed " 12 % , 12% and 13 % " respectively in EDTA form. The obtained data showed that, there are a significant increase in the dry matter yield (g /pot) of barley plants (shoots and roots) as a result of the studied treatments. Also , there are an increase in plant content of N , P, K, Fe , Mn , Zn and Si. The obtained data show also EC values in the soil treated by organic application were higher than that recorded with the initial soil before planting. On the other hand soil EC was decreased as a result of inorganic application alone. Also the pH and CaCO3 values and there were an increase in soil content of OM ,