الفهرس 
مقدمة
ماهية ومفهوم الأسمدةيوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
SUMMARY AND CONCLUSION Feutiiizers represent one of the most imporlani form of input Uoi
improving and so i conservation. They a c app! ed to the so I to promote greater plant growth and befter crop quariv. Fertilizers also are rnporlant for increasing Egyptian agricultura( production
present study aims mainly to earn out he economical analysis of
• this ilnpoiIaill productive lacwr through revealing the situation of production and consumption of chemical fertilizers ii Egypt, as well as, aria lysiug the economical e ilicteucy of producing and using chemical ferti1izer in Egypt.
The essential data of Ui is si tidy have been coi eced ken i the pi hi si ied and unpublished secondary data conceniiiig lèrtilizers and its use iii Itgypi, also the study depended out daLi col ected lior ii agrucu Itu ra I prod trccrs (farmers) as random sanipe represented them Assi ut C oveinniate Ihe sample con[aiiied 350 farmers
Analysis of collected dat a is mainly based cii tie I ccliii kju es of regression and analysis of v?riance.
Ihe present study consists oflhree chapters, au introduction, problem and objectives of the study. The flrsl cliapler of (lie sliudy (leuls with the tlieoitical framework and brief review of (lie previous studies about chemicaL ferIiizers in gener&, wlie the second chapter deals with the study mid analysis of production and consumption oF chemical Ililihizers iii Arab: 1pith ol hgypt. lie third cliapler ol lie study deals with hue study ofeconomica efficiency of piodticuon and coiistnnption olcheinical fertilizers in Arab Repuhhc of Egypt (hroii&h (lie mia(ysis 01 net retUrn of producing one Inn of different kinds of ehcniie;il fertilizers on the evel of