الفهرس 
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Abstract
These experiments were conducted at the experimental farm of the Horticultural Department, Faculty of Agriculture at Moshtohor, Benha University during the two successive winter seasons of 2015-2016 and 2016-2017. This experiment was carried out to investigate the effect of bio-fertilizer, organic (poultry and compost) manure and mineral N-fertilizers and their combination on vegetative growth, chemical composition of plant foliage as well as green pods yield and its quality of snap bean cv. poulista. This study included eight treatments which resulted from two bio-fertilizer treatments combined with four fertilization treatments as follows.
A- Bio fertilizer treatments.
1- Without addition of bio-fertilizers as control.
2- With addition of bio-fertilizers (Rhizobacterin and Phosphorin) as soil inoculation two times at seeds sowing and after germination at rate of 1 kg/fed. for each of Rhizobacterin and Phosphorin.
B- Organic and mineral fertilization treatments.
1- N-mineral fertilizers were added as the recommended dose at rate of 41kg N/fed. (200 kg ammonium sulphate /fed.).
2- Compost manure at rate of 41kg N/fed. (6.013 and 7.393 t/fed in the first and second seasons, respectively).
3- Poultry manure at rate of 41kg N/fed. (1.490 and 3.363 t/fed in first and second seasons, respectively).
4- Mixture of organic fertilizers were added as recommended dose i.e. (41kg N/fed.):-
a. Compost manure at rate of 20.5 kg N/fed. (3.065 and 3.696 t/fed in first and second seasons, respectively).
b. Poultry manure at rate of 20.5 kg N/fed. (0.745 and 1.682 t/fed in first and second seasons, respectively).
Summary and Conclusion - 52 -
Organic manure was added during soil preparation while mineral (NPK) fertilizers were divided and added at two equal parts after complete germination and 3 weeks later (45 days from seed sowing). P and K mineral fertilizer were added for all treatments in the form of 31 kg P2O5 and 48 kg K2O/ fed.
A split plot design with four replicates was adopted, where the bio-fertilizer treatments were located in the main plots and the organic and mineral fertilizers treatments were located in the sub plots. Obtained results can be summarized as follows.
1. Vegetative growth.
a. Addition of bio-fertilizer two times as soil inoculation at seeds sowing time and after germination recorded the highest values of all measured vegetative growth parameters compared with the control treatment (without bio-fertilizer) in both seasons. Such values reached the level of 5% significance in case of plant height, branches number and total fresh weight of plant during the first season only.
b. Addition of organic manure in the form of the mixture compost and poultry at the rate of the recommended dose of nitrogen fertilizer (41 kg N/fed.) followed by mineral fertilizer reflected the highest values of all measured vegetative growth parameters without significant differences among them. Meanwhile, the lowest values were obtained with the addition of the compost or poultry manure each of them alone.
c. Fertilizing the snap bean plants with the mixture of organic (compost + poultry) manure at the recommended dose of mineral fertilizer combined with bio-fertilizer reflected the highest values of growth parameters expressed as plant height, branches as well as leaves number, leaf area, total fresh and dry weight/ plant in both seasons compared with other interaction treatments.
Summary and Conclusion - 53 -
2. Chemical composition of plant foliage.
a. Using bio-fertilizer two times as soil inoculation at seeds sowing time and after germination enhanced all assayed chemical constituents of plant foliage expressed as chlorophyll reading, total nitrogen, potassium and phosphorus percentages as well as carbohydrates content. But such enhancement did not reach the level of 5% significance during the two seasons of growth.
b. Fertilizing snap bean plants with either mineral nitrogen fertilizers or organic fertilizers in the form of compost or poultry manure as well as their mixture did not affect all determined chemical constituents of plant foliage except potassium percentage during the first season only.
c. Adding bio-fertilizer (Rhizobacterin and Phosphorin) two times as soil inoculation at seeds sowing and after germination combined with fertilization by either mineral nitrogen or organic forms as a mixture of compost and poultry manure significantly increased all determined chemical constituents, especially during the first season.