Some studies on the groundnut Rhizobium symbiosis.

ltesults of inoculation experiments with an efficient strain of Rhizobium (eB 756) indicated that indigenous strains occupied most of the nodules of groundnut, grown in high Rhizobiullt gl"Oundnul populatell soils. These could he overcome hy using high rate of inoculation containiug trace clements, molyhdenum and horon, at 1.6 ppm and 4 ppm, respectively, wilh higher rates of phosphate application (150 kg./ha) and farmyard manure, resulting in a significant increase in pod yield, indicating the strategies to be followed for increasing the yield of groundnllt.