Successive crops of lettuce fertilized with bovine manure in the presence and absence of mung bean
Using legumes as a green manure is a well-established practice because it adds nitrogen-rich plant material to the soil. This study evaluates successive crops of lettuce fertilized with different doses of bovine manure in the presence and absence of mung bean. Experiments were carried out at the Rafael Fernandes Experimental Farm, Mossoró, Brazil, from August 2015 to January 2016. We applied a complete randomized block design with treatments arranged in a 4 x 2 factorial scheme, with four replications.