Integrated Nutrient Management through Precision Agriculture and Remote Sensing Academic Article uri icon

abstract

  • Precipitation distribution and nitrogen (N) application determine biomass production, soil water depletion, and wheat grain quality in semi-arid regions. The overall goal of this research is to develop a new precision fertilization management strategy that accommodates spatio-temporal variability in wheat NPK requirements, for both base and top dressing N applications. Three options to quantify base application were tested: grid soil sampling, management zones, and previous crop N uptake. To determine the need for mid- season N applications, a decision support system (DSS) was developed. Remote sensing can assist in both management zone delineation and as a data source for the DSS. In all our experiments, adequate levels of P and K exist and prevent us from testing variable-rate application (VRA) of these nutrients. A combination of variable-rate N application at …

publication date

  • November 22, 2006