Real Time Modeling of Soil N Using Nlos: Some Recent Developments.

The online version of NLOS is a soil-plant-water model designed as a tool to assist agricultural producers and professionals understand and manage nitrogen (N) resources. The model utilizes soil, management and weather data to provide real time feedback on soil and crop N status and N dynamics over the season. Users can see, in real time, consequences of cropping and nutrient application decisions in relation to weather conditions and soil factors. This information can assist with ongoing decisions within the current cropping cycle as well as subsequent cycles starting with winter cover crops. Some recent developments to the online NLOS model will be discussed including the use of 1. simplified input and results pages designed for mobile devices  and 2. default scenarios which facilitate learning by allowing a user to quickly run simulations, view outputs and  save individualized  scenarios and input data. These scenarios will help users understand soil N status and dynamics of each of their fields.