00259nam a2200097Ia 4500008004100000082002300041100002500064245003400089260003000123300000800153140113s9999    xx            000 0 und d  a631(02)    P10.106  a"Sparks, D. L., ed."  aAdvances in Agronomy -vol.106  a2010bElseviercAmsterdam  a212