https://www.sciencedirect.com/science/article/pii/S0169534714002250?casa_token=nhZIxcR9dsQAAAAA:b7bucdL217liwLn502M57MLmWG8kwn8uflBh6MCE9sc4Evkqpp9-CVqevdSV3etpYKps-P33mA
Nitrogen addition increases the production and turnover of the lower-order roots but not of the higher-order roots of Bothriochloa ischaemum (2017)
https://link.springer.com/article/10.1007/s11104-016-3160-2
Nitrogen Alters Initial Growth, Fine-Root Biomass and Soil Organic Matter Properties of a Eucalyptus dunnii Maiden Plantation in a Recently Afforested Grassland in Southern Brazil (2018, forests)
https://www.mdpi.com/1999-4907/9/2/62