BIOFERTILIZATION INFLUENCE OF TOMATO SEEDS AND SEEDLINGS BY NON-SYMBIOTIC N2-FIXERS ON TOMATO PLANT GROWTH AND FUSARIUM DISEASE SEVERITY | ||||
| Journal of Agricultural Chemistry and Biotechnology | ||||
| Article 1, Volume 25, Issue 11, November 2000, Page 7107-7120 PDF (766.07 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jacb.2000.260221 | ||||
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| Authors | ||||
| T. A. Tewfike,; H. E. Abo-Aly | ||||
| Agric. Botany Dept. (Agric. Microbiology), Fac. of Agric. Moshtohor, Benha Branch, Zagazig Univ. Egypt. | ||||
| Abstract | ||||
| Tomato seeds and seedlings were inoculated by using non-symbiotic N2-fixers Azospirillum brasilense and Azotobacter chroococcum to investigate the biofertilization influence on dehydrogenase activity, plant growth-promoting bacterial population, total nitrogen, phosphorus and potassium in soil. Fruits physical characteristics and percentage of total phenoles and indoles in fruits were also determined. Moreover, disease incidence of damping-off, in the presence of Fusarium oxysporum pathogen in the presence of biofertilizers were evaluated. Obtained data showed that, inoculation of seedlings (seeds+ seeding roots) gave the highest values of dehydrogenase activity, azospirilla and azotobacters proliferation, fruits quality and reduction of disease incidence. Also, results revealed that mixed inoculation of non-symbiotic N2-fixers increased all tested parameters and reduced disease incidence than single inoculation of either seed inoculation or seedling inoculation by diazotrophs. | ||||
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