Item in the image is a Paddy Guard (also known as a crop collector or harvest guide), which is a common attachment for brush cutters. [1, 2]
Purpose and Function
Harvesting crops: It is primarily used for reaping wheat, paddy (rice), barley, and other grain crops.
Crop collection: The curved shield holds and bundles the cut grass or crops, preventing them from scattering after being sliced.
Protection: It shields nearby plants from accidental damage during the cutting process. [1, 2, 3]