Important legumes used in agricultural systems include alfalfa, beans, clover, cowpeas, lupines, peanut ... the host plant’s root system and cause the roots to form nodules to house the bacteria ...

IN addition to the red pigment, hæmoglobin,· we have always found in leguminous root nodules a brown pigment. This is methæmoglobin with trivalent iron1. The simplest way of demonstrating its ...