Daniels-Hylton, K.D.M.; Ahmad, Mohammed, H.
Author Affiliation, Ana.
Inoculation response in kidney beans (Phaseolus vulgaris, L.) to vesicular-arbuscular mycorrhizal fungi and rhizobia in non-sterilized soil
Biology and Fertility of Soils
Date of Publication
The effect of dual inoculation on three local cultivars (Miss Kelly, Portland Red, Round Red) of red kidney beans (Phaseolus vulgaris L.) with four strains of Rhizobium leguminosarum bv. phaseoli and three species of vesicular-arbuscular mycorrhizal (VAM) fungi was examined in a clay loam soil. Rhizobial strains B17 and B36, each paired with Glomus pallidum or G. aggregatum, were the most effective pairings for cv. Miss Kelly. Inoculation of Miss Kelly with any of these pairings significantly (P=0.05) increased growth, number of nodules, nodule dry weight, mycorrhizal colonization, and shoot N and P content than other pairings. The growth response by cv. Portland Red was significantly improved by pairings of B36 or B17 with any of the three VAM fungi. For both cultivars (Miss Kelly and Portland Red), CIAT652 or T2 paired with VAM fungi did not give a positive growth response. In contrast, for cv Round Red the T2 rhizobial strain in combination with any of the three VAM fungi showed a significant (P=0.05) growth improvement in all parameters. Results suggest that while dual inocualtion of VAM fungi and rhizobia significantly improves the growth response by red kidney beans, the best pairings of VAM fungus and rhizobia for each cultivar need to be carefully selected.....