With the objective of evaluating the response from a group of hybrid and Creole varieties of maize (Zea mays L.), in terms of accumulation of dry material from roots, under conditions of irrigation, drought and nitrogen deficiency in greenhouse, two old hybrids (H-28 and H-30), two modern (H-48 and H-50), and two Creole (white and blue grain) maize varieties were evaluated. A completely random block design with two repetitions in a 42 factorial arrangement was used, and the experimental unit was of one tube (PVC, 1 m4”), filled with sandy loam soil (CC33.9% and PMP21.1%). The maize variants were subject to irrigation during their biological cycle; S1, 10 days without irrigation (30-40 dds); S2, 20 days without irrigation (50-70 dds), and S3, 30 days without irrigation (70-100 dds) with high nitrogen (AN, 160-40-20) and low nitrogen (BN, 80-40-20) applied in the sowing. The decrease of soil hydric content was reflected in a higher (p0.05) accumulation of dry matte
