الفهرس 
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Abstract
This study was conducted during the successive seasons of 2001/2002 and 2002/ 2003 to investigate the effect of different bionitrogen (Nitrobien, Biogene and Microbien) and biophosphate (Phosphorine) fertilizers as will as vesicular arbuscular Mycorrhizae (VAM) fungi and their interaction on the vegetative growth, essential oil production and chemical composition of sage (Salvia officinalis, L.) plants as well as some the chemical properties in the soil. The theoretical part of this study was carried out at the Department of Vegetables and Floriculture Faculty of Agriculture Mansoura University, while the applied part (i.e., the experiment) was conducted at the special farm of Sammenoud Center, Gharbieh Governorate. The data showed that plant height, number of branches, fresh and dry weights per plant and per faddan, Percentage of essential oil in sage herb, content in the dried plant and yield / faddan increased by biofertilizrs. The highest values were from inoculation VAM fungi or Biogene biofertilizer and its interaction. Also, chemical constituents (chlorophyll, phenolic compounds carbohydrates, protein, nitrogen, phosphorus and potassium percentage was increased in herb per plant by biofertilizers treatments. The highest values in sage herb were produced from inoculated plants with VAM fungi and Biogene. Also, a slightly decrease in the soil pH and increase of N, P, K, Fe and Mn content in the inoculated soil with all biofertilizers treatments.