Prescription map for fertiliser

I was commissioned to fly and multispectral map and 30ha paddock of wheat. This wheat was just emerging and a smaller section was sown late. I was tasked to identify the late area and come up with a prescription map. This map was created with an NDVI and MSAVI indice. Map was sent to farmer and agronomist. Approved and file sent direct to the tractor for immediate application. Brief complete successfully.