Operation Page


Once a scenario has been created on the Management page, the user is advanced to the Operations page to begin inputting the management characteristics such as the crop schedule, tillage, fertilizer, harvest, and grazing operations.


A cropping system is REQUIRED for the user to be able to advance and simulate the NTT. The user can add rotations that are one year in length or much longer. A field may have multiple crops, or a single crop. There are different options available in Operation Page for manipulating a cropping system as below:


Add Crop to Rotation


To add a crop to the rotation, click Add Crop to Rotation. The user is then asked to select a crop from the pick list, a tillage type (No-till, reduced till, or intensive till), and rotation year. The crop list is customized according to the region in which the project is located. The rotation year indicates the sequence of the crop within the crop schedule, it does not represent the calendar year. Once the user has selected a crop type, tillage type and rotation year, clicking Upload will add the crop to the crop schedule.

Once a crop is added to the crop schedule you will note that it includes several default management characteristics including a planting date, fertilizer applications, tillage schedule, and harvest. These operations can be modified or deleted as needed and new operations can be added.

The operations list for each crop can be rolled up or expanded by clicking the [-] or [+] buttons next to the crop name respectively.

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Add New Operation


Users can add operations to their rotations or build a cropping system from scratch using the Add New Operation button at the top of the page. You will be asked to select the crop, operation type, year, and date. The year indicates the position of the crop in the crop schedule, for example, CORN year 1 and SOYBEAN year 2.

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Depending on the operation type there will be additional fields to enter. Below are descriptions of the different operation types and the additional required fields for each.

Planting

Fertilizer

Tillage

Harvest

End of Season

Note: End of season indicates to the model that the crop is removed from the field. If an End of Season operation is not present, then the model assumes that the crop is left growing. End of season should be used for all annual crops. For certain perennial crops like hay and pasture, End of Season operations may be absent from the crop schedule.

Manual Irrigation

Note: On the Conservation Practices pages there is an option for autoirrigation and autofertigation which automates irrigation on your field based on user parameters. Please see autoirrigation/autofertigation for more information.

Continuous Grazing

Rotational Grazing

Burn

Liming


Add a Cover Crop


To add a cover crop, click Add Cover Crop button at the top of the page. Users will indicate the type of cover crop, cover crop year, planting date, and planting method. The cover crop year should indicate the year within the rotation that the cover crop is planted. NTT will automatically add the harvest date for the cover crop based on the next crop in the rotation. Cover crops are not fertilized and are not harvested, rather they are chopped prior to planting of the next crop in the rotation.

Note: If you wish to add a commercial cover crop, please do so as you would add another crop to your crop schedule. For example, add “Winter Wheat” to your crop schedule by clicking Add Crop to Rotation and selecting from the crop pick-list (NOT using the Add Cover Crop button). Adding a crop this way will allow users to apply fertilizer, tillage and harvest operations (etc.).


Edit Operation


Users may change the values or any other information in an operation by clicking on the Edit icon in the Actions column next to the operation. Once the operation has been edited, click Finish to save and return to the Operations page. Clicking Back will return the user to the Operations page without saving changes to the operation. Clicking Add More will save change to the current operation and allow the user to continue adding additional operations without returning to the Operations page.

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Delete an Operation


To delete an operation, click the Delete icon in the Actions column of the operation you wish to delete.


Switch View


By clicking Switch View at the top of the page, you can switch your view from one that is organized by crop and operation type to one that is organized by date.

Once you are satisfied with your crop schedule, click Continue at the top of the page. You will be advanced to the Conservation Practices page where you can indicate any conservation practices that are present on the field.


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