Maize and wheat root biomass, vertical distribution, and size class as affected by fertilization intensity in two long-term field trials

Summary

This long-term field trial investigated how fertiliser intensity influences root development, vertical distribution, and morphology in maize and wheat crops. By comparing root biomass and size-class composition across fertilisation regimes, the study provides empirical data on how nutrient management strategies affect below-ground crop architecture—a key but often under-quantified component of soil-plant interactions. The findings contribute to understanding how intensive versus moderate fertility management shapes root system structure in cereal production systems.

UK applicability

The study's findings on root response to fertiliser regimes are relevant to UK cereal production, particularly given ongoing interest in optimising nutrient efficiency and soil health. Results may inform UK practice on balancing productivity with below-ground carbon input and soil structure maintenance, though local soil types, climate, and cultivar choice would require localised validation.

Key measures

Root biomass (dry weight), vertical distribution profile, root size class distribution, fertilisation intensity levels

Outcomes reported

The study examined how fertilisation intensity affects root biomass, vertical distribution, and size class composition in maize and wheat grown in long-term field trials. Root architecture metrics were measured across different fertiliser application levels to understand below-ground responses to nutrient management.

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