الفهرس 
تطور كمية وقيمة الاسمدة الكيماوية والبلدية والعضوية فى مصريوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
As a result of the negative effects of chemical fertilizers and agricultural wastes have turned the concerns of many countries in recent times to the search for natural alternatives to chemical fertilizers to reduce pollution of the environment and reduce the costs of agricultural production, at the same time the production of healthy food safe and for export, and between these alternatives to the production of what is known as organic fertilizers and bio-fertilizers through the recycling of agricultural waste, and has become the trend and the reality in many countries, including Egypt, despite the importance of organic fertilizers and bio-fertilizers in Egypt, but that production and consumption, marketing and economic feasibility is still beset with some problems and obstacles as well as the credibility of these fertilizers as alternatives to chemical fertilizers among farmers, and the confidence of farmers in this type of fertilizer, lack of studies and related research, especially studies that show the economics of these fertilizers in agriculture of Egypt comes the importance of this study underscores the importance of balanced fertilization in line with sustainable agricultural development, which aimed at drawing various efforts to make best use of all elements of production are available. Results of the study that the most important problems facing farmers in the use of fertilizers and organic fertilizers and bio-is the lack of fertilizers and organic fertilizers and bio in the market and is ranked first in terms of relative importance and explained that about 94.7% of the total sample, followed by the problem of lack of sales outlets and the distance from the villages and concentrated in cities and is ranked second at about 86.7% of the total sample. The problem of the lack of mentors agricultural specialists to deliver recommendations for third place in the relative importance of 71.3% of the total sample. Then the problem of availability in time for the crop by about 48% of the total sample. The most important findings of the study and for a sample of professionals or technicians experienced production and marketing of organic fertilizers and bio that about 73.3% of the total sample stated that these fertilizers good alternatives to chemical fertilizers, and partly because it is beneficial to the soil and plant over the long term, as it is safe not pollution of the environment and do not harm human health. And about 26.7% of the total sample stated that these fertilizers are not good alternatives to chemical fertilizers and the reasons that these fertilizers, low productivity and difficult to use by farmers is the alternative to a partial and not entirely for chemical fertilizers. The main proposals for the production of organic fertilizers and biological results showed that the establishment of factories to increase production, development and control and increase the number of sales outlets, the use of local materials from agricultural waste, and increase the production of liquid fertilizers come as proposals ranked first in terms of the relative importance of the whole that all components of the sample. This proposal follows the training of technical personnel and expertise to increase productivity and comes in second place about 90% of the total sample. Then comes the proposal to support applied scientific research in this area ranked third in terms of the relative importance of about 50% of the total sample.