Description
A robust spatial framework that delineates regions in which crop production technologies perform similarly can help address current limitations on extrapolation of results from agronomic field experiments to larger regions. In principle, the impact of a particular agronomic technology should be predictable and of reasonably similar magnitude within a spatially defined region with similar biophysical attributes. We developed a spatial framework called Technology Extrapolation Domains (TEDs) that delineates regions based on four biophysical attributes that govern rainfed crop yield and its inter-annual variability: (i) annual total growing degree-days (GDD), which, in large part, determines the length of crop growing season, (ii) aridity index (AI), which largely defines the degree of water limitation in rainfed cropping systems, (iii) annual temperature seasonality (TS), which differentiates between temperate and tropical climates, and (iv) plant-available water holding capacity in the rootable soil depth (PAWHC), which determines the ability of the soil to supply water to support crop growth during rain-free periods (Figure 1). A unique combination of these four biophysical attributes is hereafter referred to as a ‘technology extrapolation domain’ (TED).
Details
| SKU | NUtech-TEDs-Africa |
|---|---|
| Price | $3,000.00 |