Efficiency of biofertilizers, organic and inorganic amendments application on growth and essential oil of marjoram (Majorana hortensis L.) plants grown in sandy and calcareous soils [electronic resource].

Includes references.

A greenhouse pot experiment was set up in order to stud)' the response of sweet marjoram plants to inoculation with trimixture of biofertilizers (Azotobacter + Azo,spirillum + phosphate dissolving bacteria (PDB) in the presence of organic and inorganic fertilizers under cultivation in sandy and calcareous soils as representatives of Egyptian desert soils. Results have shown that marjoram as a medicinal plant normally growing on sandy and calcareous soils in Egyptian desert significantly responded to biofertilization which positively affected plants' growth characters and the essential oil content and it's potency against Gram negative G (-) and G (+) bacteria, fungi and yeast. The best treatment was that including the application of Azotobacter + Azospirillum + phosphate dissolving bacteria in the presence of K +1/4 N + rock phosphate + sheep dung manure.

Summary in Arabic.

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