الفهرس 
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Abstract
Objectives: Decrease chemical fertilizers with magnetized water, biofertilization, different rates of mineral and organic fertilization which are low cost in addition improve production, quality and limit the environmental pollution. Methods & Result. Two field experiments were conducted at a Private Farm in Aga district, Dakahlia Governorate during two successive seasons of 2016 and 2017 to investigate the effect of irrigation with magnetized water, biofertilization, different rates of mineral and organic fertilization and their interaction on vegetative growth parameters, chemical constituents, yield and quality of common bean (Phaseolus vulgaris L.) cv. bronco. This experimental included 16 treatments which conducted in split split plot in a randomized complete block design with three replicates. Irrigation water treatment were presented in the main plots, while biofertilizers treatments were assigned in the sub plots, the sub sub plots were rates of mineral and organic fertilization. The obtained results could be summarized as follows: 1-Vegetative growth characteristics: The highest values of all studied parameters (plant height, number of leaves, number of branches, leaf area, fresh and dry weights) were recorded by plants irrigated with magnetized water, inoculated with biofertilizers mixture and fertilized with 50% compost + 50% NPK of recommended dose for both seasons, followed by plants irrigated with magnetized water, inoculated with biofertilizers mixture and fertilized with 75% compost + 25% NPK of recommended dose.2- Chemical constituents of leaves: The highest values of nitrogen, phosphorus, potassium, chlorophyll a, chlorophyll b, chlorophyll (a+b) and carotene contents in leaves were obtained from plants irrigated with magnetized water, inoculated with biofertilizers mixture and fertilized with 75% compost + 25% NPK of recommended dose for both seasons. The best value of Mg was recorded by plants irrigated with magnetized water, inoculated with biofertilizers mixture and fertilized with 50% compost + 50% NPK of recommended dose for both seasons.3- Yield and its components: Higher values of plant yield, average weight of green pod, No. of green pods/plant, early and total yield were recorded by plants irrigated with magnetized water, inoculation with biofertilizers mixture and fertilized with 50% compost plus 50% NPK from recommended dose for both seasons. 4- Pods quality: Plants irrigated with magnetized water, inoculated with biofertilizers mixture and fertilized with 75% compost plus 25% NPK from recommended recorded the best values of all pods quality (N, P, K, chlorophyll (a+b), total carbohydrates, TSS, reducing, non reducing, total sugars, crude protein, crude fiber and vitamin C) for both seasons.Conclusion: It was found that irrigation common bean plants with magnetized water, soil inoculation with biofertilizers mixture (Rhizobium phaseoli, Bacillus megatherium and Bacillus circulans) and application of 50% compost plus 50% mineral fertilizer of recommended dose gave enhanced vegetative growth and produced highest green pods yield with suitable quality parameters. Hence, this treatment is recommended which the mineral fertilization is reduced to 50% and this in turn decrease the environmental pollution and production cost.