AgroNum & RothC
AgroNum™ validation as a means to soil organic carbon & nitrogen conservation. 200 field-plots whose cropping practices (CP) were modified to increase grain yields in accordance with Polyor SAS’s AgroNum™ N-fertilizer response curves (https://lnkd.in/exiTpR5a) were modelled using an R version (https://lnkd.in/erejk8Na) of the well-known soil organic carbon model, RothC (https://lnkd.in/eJNuf43W).
Attaining hashtag#AgroNum target grain yields through such CP modifications stabilizes total soil organic matter degradation over time. After 22 years as of 2000 this conserves an additional 3 tons (2790 kg) of soil organic carbon (SOC) at an average accrual rate of 125 kg-C/ha/year, or approximately 12 kg-N of soil organic nitrogen per year (dSON).
Using AgroNum™, it can be inferred that a portion of these 12 kg-N_SON is effectively crop residues nitrogen resulting from sustainable grain yield increases with respect to AgroNum™ N-fertilizer response curves. In sort, this is a form of sustainable intensification of field-crop production; see my previous post (https://lnkd.in/eNh3_vdq).
This supplemental soil organic nitrogen, dSON, accrued over time as grossly modelled using RothC is quite well correlated to AgroNum™ derived refundable nitrogen credits, or RNC, also expressed as kg-N_SON/ha/year. This said, AgroNum™ is easily implementable at the field-plot level. More so, the aforesaid dSON fraction commensurate with such refundable N-credits (RNC) is derived using AgroNum™, not RothC per se. Polyor SAS’s AgroNum hashtag#ai is thus THE convenient way of expressing not only SOC accumulation, but also and more importantly the corresponding sustainable target yields.
More so, AgroNum™ then calculates the said nitrogen credits that will be eventually paid to the farmer. This, without any of the soil sampling, IoT, data uploads, or burdensome – and expensive, carbon budgeting schemes usually proposed by hashtag#carbonfarming advocates.
Polyor SAS is presently working at standardizing AgroNum™ as a means of carbon-offset verification in lieu of existing hashtag#mrv protocols. ‘Till then, feel free to contact Polyor SAS (https://lnkd.in/exiTpR5a) if you which to participate.
hashtag#mrv hashtag#carbonfarming hashtag#sustainableagriculture hashtag#agronum hashtag#ai
