Root growth and nodulation of pinto bean (Phaseolus vulgaris L.) cv. Othello
McKenzie, B.A.; Hill, G.D.; Gabiana, C.
Proceedings Annual Conference Agronomy Society of New Zealand 26: 75-78
The effects of rhizobial inoculation and pH on the growth of pinto beans (Phaseolus vulgaris) Othello were investigated in a glasshouse experiment. Plants were either inoculated or not inoculated with Rhizobium strain CC511 and, were grown at pH 5.3, 6.5 or 7.3. Inoculation was necessary for nodule formation. This resulted in significant yield increase of 5.36 to 6.15 g/plant over uninoculated plants. pH level had a much greater effect on plant growth than did inoculation. Optimum pH level for roots and shoots was about 6.5. However, the plants showed little difference in growth response at the lower pH of 5.3. The decrease in growth rate and yield was marked at pH 7.3.