COMBINED EFFECT OF ORGANIC MANURING AND BIOFERTILIZATION ON CHEMICAL AND BIOLOGICAL ACTIVITIES IN THE RHIZOSPHERE OF FABA BEAN | ||
| Journal of Agricultural Chemistry and Biotechnology | ||
| Article 1, Volume 28, Issue 1, January 2003, Pages 555-564 PDF (2.91 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jacb.2003.243985 | ||
| Author | ||
| S. M. Abd EI Malek, | ||
| Agricultural Microbiology Department, National Research Center, Dokki, Cairo, Egypt | ||
| Abstract | ||
| A pot experiment was conducted in the green house ot National Research Center to study the effect of organic manuring (composted town refuse) and organic manure associated with dual biofertilizers on rhizosphere of taba bean plants, as well as the enzymatic activities of soil as indicators to the biological activity. An empirical formula was suggested to evaluate the effects of different treatments applied under the rhizosphere conditions. These effects could be indexed by determining the Efficiency of Rhizosphere Treatment (ERT) i.e., the net effect of rhizosphere treatment divided by the net effect of the same treatment in root - free soil. Organic amendment (2% of composted town refuse) alone 0 r associated with dual biofertilizers (Rhizobium /eguminosarum+ Phosphate dissolving bacteria) (POB) wrer used. The rhizosphere effect and the ERT were periodically determined (2,4, 6, 8 weeks) for the unamended and amended soil respectively. The changes in soil prganic carbon, total nitrogen, rate of C02 evolution, populations of total microbial flora, Rhizobium /eguminosarum And POB, as well as soil enzymatic activities of invertase, phosphatase, and dehydrogenase were used as chemical, microbiological and biological parameters under these conditions. The results revealed that the biofertilizers treatment recorded the higher figures of ERT for ali parameters studied as compared to the organic amendment (CTR) alone or the unamended soil under the rhizosphere of faba been (Vicia faba). | ||
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