This study was carried out as a pots experiment at a privet greenhouse of El-Emam El-hussin village, El-Delengat area, Behara Governerate Egypt to study the individual and combined treatment of salinity levels of irrigation water (300,700 and 1900 mg L-1),applying magnetic technique (un-and magnetized water) and biofertilization (without and with) on growth,root nodules formation and macro nutrients (N,P and K) contents of pea plants grown in clay and sandy soils at two growth periods. To the aims of this study, Two soils varied in their physical and chemical properties were used in this study. The first soil was clay which taken from Gzeerit El-Hagar, El-Shohada, Minoufiya Governorate, and the second was sandy soil which taken from El-Emam El-Hussin village, El-Delengat area, Behaira Governorate. Initial physical and chemical properties for the two soils were done. Also, three resources of irrigation water of Behaira Governorate varied in their salinity levels. The first one IW1 representing Nile water 300 mg/L taken from El-Emam El-Hussin village, ElBustan, El-Delengate, the second IW2 have salinity level of 700 mg L-1 representing ground water taken from the same village of the first resource. The third resources IW3 have a salinity level of 1900 mg L-1 representing also ground water of El-Tahawy village, Wadi El-Natroun. These three resources of irrigation water were magnetized by passing through a magnetic field (1000 Gows). The chemical composition of un-and magnetized irrigation water was done. In addition, pea plants was used as a test plant was used as biofertilizer on two (800 g/fedane). The first one was added in powder form on the seeds (method) before planting, but the second was added in liquid form with irrigation water after 20 days of planting.The layout of the experiment was a split-plot design of each soil in six replicates with the main plots arranged in a randomized completely block design. After 45 days of planting, the plants of each pot (one plant) was taken and divided into roots and shoots.Root nodules formed were counted and recorded. Fresh and dry weights of shoots were measured. Also, shoots content of N, P and K were determined. At harvesting stage, the plants of other three replicates were taken and divided into straw and seeds. Dry matter yields of straw and seeds were measured as well as their contents of N,P and K were determined.

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.

During winter season of 2015 a pots experiment was carried out at private farm on two soils of Egypt (clay and sandy) varied in their physo and chemical properties to study the individual and combined effects of salinity level of irrigation water either of un-or magnetized irrigation water and biofertilization on nodulation efficiency and growth of common bean plants (Phaseolus vulgaris L Nebrasca c.v). The used salinity levelswere 300, 700 and 1900 mg/l. The layout of the experiment was split-split block design in three replicates of each soil. The obtained data show a significant decrease on nodules number formed on the roots of common bean plants. On the other hand, application of magnetic technique and biofertilizer resulted in a significant increases of nodules number. These findings may be cleared from the calculated relative change values "RC" of the studied three factors on nodulation number. With the same treatment nodules number formed on the roots of common bean plants grown on clay soil was higher than that formed on the plants grown in sandy soil. Similar effect for the studied three factors was found on both fresh and dry weights (g/pot) of common bean plants (shoots) at growth period of 45 day: These results concluded that, applying magnetic technique and biofertilizer application decreased the hazard effect of water salinity and increased nodulation efficiency and plant growth.