ABSTRACT
The response of Inga marginata (native woody species from the Atlantic Forest) to nitrogen and phosphorus adittion was evaluated. The experiments were conducted in a green house with pots filled with a mixture of sand and vermiculite. At the first experiment, two sources of nitrogen were applied. The N addition contributed to increase the dry weight of plants. The N applied as NO3- inhibited nodule formation. A combination of 3 levels of P and 2 levels of nitrogen were applied. The results showed that the application of 5 mg of N and 20mg P/kg was the best combination for plant development.
Key words:
nodulation; leguminous tree; biological nitrogen fixation.