PESTICIDE INFLUENCE ON NITROGEN FIXATION AND MODULATION BY SOYBEAN AND LIMA BEAN

Effect of rhizobium and nitrogen on soybean

Effect of Nitrate on Nodulation and Nitrogen Fixation of Soybean

1.1 Biological nitrogen fixation and nitrogen nutrition in soybean plants Biological nitrogen fixation is one of the most important processes for ecosystem to access available N for all living organisms. Although N2 consists 78% of atmosphere, but the triple bond between two N atoms is very stable, and only a few group of prokaryotes can fix N2 to ammonia by the enzyme nitrogenase. Annual rate ...

Effect of EM on Nitrogen Fixation by Bush Bean and Mungbean

The effect of effective microorganisms (EM) on nodulation parameters and yields of bush bean and mungbean on soils with low and high populations of rhizobia were evaluated. Two soils were selected because of the adverse effects of high temperatures and dry conditions of the tropics on growth and maintenance of inherent populations of beneficial soil microorganisms. The experimental treatments i...

Utilization of Fixed Nitrogen by Azotobacter and Influence on Nitrogen Fixation.

The influence of fixed nitrogen on Azotobacter both with respect to utilization and inhibition of nitrogen fixation has been studied by a number of investigators. The results have not always been conclusive because of the relatively poor growths of cultures obtained in culture media now known to have been deficient in one or more of the elements essential for nitrogen fixation or growth, partic...

Effects of Meloidogyne incognita on Nitrogen Fixation in Soybean.

The effects of a North Carolina population of Meloidogyne incognita on N fixation on root-knot-susceptible 'Lee 68' and moderately resistant 'Forrest' soybean were evaluated 50, 75, I00, and 135 days after inoculation with nematodes. Nematodes stimulated N fixation in Lee 68 by 50 days and in Forrest by 75 days. At all other intervals, N fixation was either depressed or unaffected by nematodes....