PRODUCTIVITY OF Majorana nonensis L. PLANTS AS INFLUENCED BY THE INTERACTIONS BETWEEN MINERAL AND BIOLOGICAL FERTILIZATION | ||
| Journal of Plant Production | ||
| Article 32, Volume 28, Issue 2, February 2003, Pages 1373-1389 PDF (5.69 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2003.245927 | ||
| Authors | ||
| A. M. Kandeel,1; M. S. Sharaf2 | ||
| 1Hort. Dept., Fac. Agrlc., Aln Shams Univ., Cairo, Egypt. | ||
| 2Agric. Microbiol. Dept., Fac. Agrlc., Ain Shams Univ., Cairo, Egypt. | ||
| Abstract | ||
| A field experiment was carried out to investigate the effect of pre-sowing inoculation of marjoram with Azotcbac!<:r cnroococcum, Bacil/us circuiens, vesicular arbuscular mycorrhizae(VAM} or Iheir mixture in the presence of full or half of the recommended field rate of the inorganic NPK fertilization on the planl growth, microbial activities in the rhizosphere, volatile oil yield and chemical composition. Parameters related to the above- mentioned measures of performance were recorded. Data of this study showed that mixed inoculation with the three biofertilizers supplemented with half dose of NPK gave the hiphest and significant increases in the growth parameters, oil % and oil yield teddan' . as well as, the N. P and K % in plant herb. The above- mentioned treatment increased the concentration of the constituents volatile oil, geranyl acetate, cineole, linalool.limonene and c-Ierpenolene. while decreased the concentrtion of a-terpineol compared with the control. Mixed inoculation also, raised total microbial densities and also those of azotobacters and B,circu/ans in marjoram rhizospheric soil and increased C02 evolution, N2-ase activity and mycorrhizal root infection, as well as, spore production .On the other hand, inoculation with either of A.chroococcum or B.circu/ans amended with half dose of NPK decreased the above- mentioned parameters compared with uninoculated plants supplemented with Ihe full dose of NPK fertilization, but VAM applied alone or in conjugation with the bacterial partners significantly enhanced those parameters. | ||
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