Management Scenarios

Overview

Once clicking Save and Continue on the Soils page, users will be advanced to the Management Scenarios page. The Management Scenarios page is a field-level page where the user creates, manages and simulates management scenarios for each field. Users may create multiple scenarios for each field in order to compare how different crop management and conservation practices will impact nutrient losses and yields.

Creating a Field Scenario

The user can create a scenario by clicking on the Add New Scenario button. Users will be asked to name the scenario, for example “Baseline” or “Alternative” or “Auto-Irrigation”. After giving a name to the scenario, click the Save button which will create the scenario and advances the user to the Operations page where the user will begin to define the crop schedule and conservation practices. (see Operations Page)

Copy Scenario from other Field

The user can copy scenarios from other fields and use it in the existing field. To copy scenarios click Copy Scenario from other Field at the top of the page, then select the field and scenario that you wish to copy. Click the Copy button when done. The scenario will be copied and will appear in the list of management scenarios for that field. In Addition, a scenario could be duplicated and renamed and modified for different management scenario within a field by using the copy key under the action options.

Manage Field Scenarios

The Management Scenarios page includes a list of the scenarios created for the field. The list includes the scenario name, fields for weather, soils and operations, simulation date, and an actions column.


A green check will appear in the weather, soils, layers and operations columns where these are present for the scenario. In order to successfully simulate a scenario, all four of these elements must contain a green check. The weather, soils and layers should be checked when a management scenario is first created, as these elements are derived from the map and are automatically associated with each field. However, the operations column will be blank until the user enters management information for the scenario. A green check will appear in the operations column once management information is present for the field.


The simulation date field indicates the date on which the scenario was last simulated by the model. If the simulation date field is blank it means that the field has not been simulated. (See Simulating Scenarios to learn more about how to simulate a scenario.)


The Actions column contains three different icons, representing different actions. The edit icon allows you to modify the name of the scenario. The copy icon creates a copy of your management scenario. And the delete icon will delete the management scenario.

Simulating Field Scenarios

Once you have completed one or more scenarios for your field you must simulate the scenarios to obtain results. By simulating the scenarios you are running the project through the APEX model which will return results for estimated nutrient and sediment losses as well as crop yields. To simulate a scenario, check the box next to the scenario or scenarios you wish to run and then click the Simulate Selected Scenario button.

Before attempting to simulate a scenario, please make sure that there are green check marks in the weather, soils, layers and operations columns are present. Each of these elements must be present in the scenario before it can be successfully simulated by the APEX model. Simulation of the scenarios may take one or more minutes.

Once a scenario has been successfully simulated the simulation date field will show the date and time of the most recent simulation.

Note: If you modify a management scenario you will need to re-run the scenario in order to view results of the updated scenario.

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Viewing Results

Click the View Results button to view results of the simulated scenarios. You will be advanced to the results page where you may select up to three scenarios to compare at a time. (See Viewing Results for more details.)

Downloading APEX files

After you have simulated a management scenario you can download the APEX files if you wish. This feature is generally for advanced users who may wish to save these files to run in another version of APEX. Alternately, this feature can be used for those who wish to store project files locally rather than on the server. APEX files can be uploaded and viewed on the Project Management page. To download the APEX files, select a management scenario and then click Download APEX Files.


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