Soil compaction modifies morphological characteristics of seminal maize roots

摘要: An evaluation of the effects soil structural heterogeneity on maize ( Zea mays L.) root system architecture was carried out plants grown in boxes containing fine and clods. The clods were prepared at two levels moisture (0.17 0.20 g/g) bulk density (ranges 1.45–1.61 g/ml 1.63–1.79 g/ml). Soil directly affected probability clod penetration by roots. Primary roots inside manifested morphological deformations form bends. We observed a significant increase bends per length lower (P = 0.02). Root diameter branching increased, lateral decreased considerably However, once emerging into free soil, values all three characteristics re mained low. While changes caused mainly P < 0.05), related to 0.01). Branching modified exclusively an interactive effect both factors 0.05).