Hi Shreya, thank you for your question. There are multiple ways to go about solving this issue.
(1) You can edit your data, if you have a Project Manager type Platform account, in the Platform.
(2) Additionally, if you have access to ArcGIS Pro, you can edit in the Desktop application.
The most straightforward way to combine the two farms’ parcel data would be to edit your survey’s feature layer in the Platform. You can do this by following Editing Polygon Vertices.
You can also follow Deleting Vertices in ArcGIS Pro to achieve similar results. If you would like to know more about advanced geoprocessing functionality, take a look at this overview on the Data Management Tools.