الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Three soils were chosen from El-Minia Governorate.
Their chemical and physical properties were slight~y d:ffered. The three soils represented the newly recla-
main purposes in this study were concluded in the followwing aspects
1- To study nitrogen forms, N-mineralization and NNvolatilization.
3- Effect of mineral and organic N-sources added to the three soils on the growth, dry matter ana TI-up~a~e.
4- To study the response of the three successive crops (barley, soybean and maize) gro~n in the three studied soils to different organic-and inorganic-
5- The obtained results showed that the superiority of organic manures, especially filter mud and akalona as fertilizers in increasing some growth parameters and N-uptake by the three studied.