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(A) Root distribution in a rhizoslide of 30-day-old Zea mays plants of which half the root system was subjected to high (17mM) N after 15 d of growing without N. (B) Correlations between dry weight (DW) of the shoot and DW of the seminal root system present in the high N compartment, and between DW of the shoot and DW of the crown root system present in the high N compartment. Significance tested with a Spearman’s rank correlation (rs; n=18).
