Growing grasses such as those of the genus Urochloa can improve soil properties leading to both higher N uptake and cash crop yield, but the mechanisms behind these effects remain unclear. However, soil structure improvement seems to have a key role on the process. Thus, U. ruziziensis and U. brizantha will be grown in columns and rhizotrons filled with soil, and rice will be grown thereafter.. X- ray Computed Tomography and Winrhizo will be the tools to evaluate the rice root system and soil structure. In addition, the nitrogen balance in the soil-plant system will be evaluated These evaluations will allow the assessment of both the interaction of roots with soil structure and the effect of grasses on root growth and N uptake by rice.
News published in Agência FAPESP Newsletter about the scholarship: