Water Stress Scatters Nitrogen Dilution Curves in Wheat.

ABSTRACT: Nitrogen dilution curves relate a crop's critical nitrogen concentration (%N_c) to biomass (W) according to the allometric model %N_c = a W ^-b . This model has a strong theoretical foundation, and parameters a and b show little variation for well-watered crops. Here we explore the robustness of this model for water stressed crops. We established experiments to examine the combined effects of water stress, phenology, partitioning of biomass, and water-soluble carbohydrates (WSC), as driven by environment and variety, on the %N_c of wheat crops. We compared models where %N_c was plotted against biomass, growth stage and thermal time. The models were similarly scattered. Residuals of the %N_c - biomass mo

SUBMITTER: Hoogmoed M 

PROVIDER: S-EPMC5897705 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature