Exercises: Evaluating Wind Erosion Problems with WEPS

Texas

Following are some example management scenarios that we will use to evaluate a wind erosion problem in the Northwest area of Texas.

Situation 1 – Continuous Cotton

The management scenario to be evaluated is:

•	The farm is located in Lubbock County, Texas

•	The CLIGEN Station is Lubbock and the WINDGEN Station is Lubbock

•	The Soil Map Unit used in the evaluation is Amarillo_4_100_LFS

•	The original Cropping system is Continuous Cotton, stripper

•	The field size is 2640' X 2640' (160 acres)

•	The WEPS evaluation of the cropping system will be run for 5 rotation cycles

Figure 1.29 shows the Continuous Cotton rotation including the dates and field operations.

Cotton (Yield of ½ Bale)

Situation 2 – Cotton/Milo

When we expand the one-year Cotton rotation to include Milo, we can add the operations, dates of operations, and the Milo crop directly to the original Cotton rotation or we can build a separate template for Milo and then insert the new template in the rotation. The new single-year template for Milo begins by opening MCREW, clicking on "File", then click on "New" and this will drop a clean MCREW screen down. With the clean MCREW, and screen, we just start entering dates and operations as instructed in the earlier lessons on MCREW. The single-year cropping scenario for Milo should be saved as a template. Saving a template begins by clicking on "file" and then "save as a template". The list of management (*.man) folders and files will drop down. Here we can open a folder before saving, or we can go directly to the window on the bottom of the list called "File name", remove the *, and then type in the name of the new template we are saving. To finalize we click "Save" on the bottom right. We now have a new single-year Milo template and will add it to our existing Cotton scenario.

Figure 1.30 shows the two-year rotation of Cotton/Milo, including the dates and field operations.

Situation 3 – Cotton/Winter Wheat

Figure 1.31 shows the two-year rotation of Cotton and Winter Wheat including the dates and field operations. We recommend building the rotation by using separate templates of Cotton and Winter Wheat. Once you have a template of Cotton/Winter Wheat, you can use it directly from your management (*.man) files.