AgroNum nitrogen response curves
N-fertilizer response curves for cereal & other non-legume grain field-crops are not quadratic, but rather quasi power functions. This fact has been around for some time; Lassaletta et al. 2014 (https://lnkd.in/e5r-amK4), Bodirsky et al. 2014 (https://lnkd.in/ewgqdcaP).
This said, Polyor SAS's AgroNum N-fertilizer response curves (https://lnkd.in/exiTpR5a) go much further.
- First, they represent sustainable grain yields by excluding de facto N-fertilizer use efficiencies (NfUE) either too low or too high unconducive to soil organic matter conservation.
- Second, N-fertilizer response curves depicted by Lassaletta et al. 2014 & Bodirsky et al. 2014 give 0 yields at 0 N-fertilizer, which is strange since 0 N-fertilizer in temperate long-term experiments consistently yield around 25 to 35 kg-N/hectare offtake per year. This inherent low-level soil productivity is part of AgroNum N-fertilizer response curves.
- Third, and most importantly, AgroNum nitrogen response curves are plot-specific, and easily generated knowing only the plot's centermost GPS coordinates. This ergonomy represents a breakthrough in agricultural consultancy greatly facilitating sustainable agriculture & carbon-farming.
Yours to see (https://lnkd.in/exiTpR5a).
