INTERACTION BETWEEN BRADYRHIZOBIUM AND INDIGENOUS MYCORRHIZAL FUNGI ON NITROGEN FIXATION AND PHOSPHORUS NUTRITION IN SOYBEANS

Kadir, Sabaruddin (1995) INTERACTION BETWEEN BRADYRHIZOBIUM AND INDIGENOUS MYCORRHIZAL FUNGI ON NITROGEN FIXATION AND PHOSPHORUS NUTRITION IN SOYBEANS. Masters thesis, Faculty of Graduate study.

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Abstract

Possible interactions between mycorrhizas and rhizobia in soybeans (Glycine max L. Merr. cv. Evans) were investigated in the greenhouse where temperature, lighting, and water supply were kept uniform. The P nutrition of soybean plants grown in undisturbed and disturbed soil was amended with 0, 20, 40, and 40 mg P kg" soil. Nodulating and Non-nodulating isolines, were sown with and without Bradyrhizobium. Soils had previously been planted with three cycles of maize (Zea mays L. cv. Pioneer 3949). Growth and P concentration in maize grown in undisturbed soil were greater than for plants from disturbed soil, consistent with previous work that had led to the conclusion that soil disturbance disrupted extra-radical mycelia of mycorrhizas, so reducing their effectiveness. Soil disturbance decreased early growth in soybean. At podfill, plants in undisturbed soil contained more P and fixed more N2 than plants from disturbed soil. Rhizobium inoculation increased fixation in disturbed soil but not in undisturbed soil. Addition of P could not offset all effects of soil disturbance.

Item Type:	Thesis (Masters)
Subjects:	S Agriculture > S Agriculture (General) > S590-599.9 Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships
Divisions:	05-Faculty of Agriculture > 54294-Soil Science (S1)
Depositing User:	Ph.D. Sabaruddin Kadir
Date Deposited:	24 Aug 2025 09:38
Last Modified:	24 Aug 2025 09:38
URI:	http://repository.unsri.ac.id/id/eprint/182577

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