Title  :Effect of bio or organic and/or nitrogen fertilization on maize plant grown in calcareous soils with different calcium carbonate contenrs in Egypt. El-Minia Science Bulletin (Faculty of Science, El-Minia University -
Facyltu : Science Section : Botany
Abstract :
Pub by :Egypt). 18 (1): 69-91.

researchers from fayoum university
 Prof.Dr.-Tharwat El-Sayed El-Desouky Radwan
Faculty : Science Section: Botany

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