Nitrogen supply affects root:shoot ratio in corn and velvetleaf (Abutilon theophrasti )

By Kimberly D. Bonifas, D. Walters, K. Cassman, J. Lindquist. Weed science, 2005

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Comparison of deficit irrigation management strategies on root, plant growth and biomass productivity of silage maize (2017, unknown): “On the other hand, it has been reported to increase below-ground biomass, such as root:shoot ratio (Kang et al., 1998; Bonifas et al., 2005) and root dry matter production (Oktem, 2008; Sangakkara et al., 2010).”
Minimizing nitrogen losses from a corn–soybean–winter wheat rotation with best management practices (2007, background): “Increasing fertilizer N additions may alter root architecture of corn by encouraging increased root growth in the surface soil as well as decreased root:shoot ratio (Anderson 1988; Bonifas et al. 2005), and may reduce the ability of the root system to acquire soil N efficiently (Cassman et al.”
Response of aquatic plants to abiotic factors: a review (2011, background): “…ratios are usually considered an accurate trait to determine an aquatic plant’s ability to tolerate nutrient or mechanical stresses (Grime 2002; Bonifas et al. 2005), these patterns suggest that such species would grow in peripheral habitats (sensu Wisheu and Keddy 1992), i.e. in habitats…”
Genotypic variation and relationships between seedling and adult plant traits in maize (Zea mays L.) inbred lines grown under contrasting nitrogen levels (2012, background): “In grasses, N deficiency leads to a higher root to shoot ratio (R:S) (Durieux et al. 1994; Monaco et al. 2003; Bonifas et al. 2005; Li et al. 2009).”