Fertilization at planting impairs root system development and drought avoidance of Douglas-fir (Pseudotsuga menziesii) seedlings Douglass F. Jacobs, Robin Rose, Diane L. Haase and Patricio O. Alzugaray Ann. For. Sci., 61 7 (2004) 643-651 DOI: 10.1051/forest:2004065