Variable rate prescription maps data processing software app


Arable Farmer
Newbie to the forum although long time viewer.

With recent updates to hardware and software on our 24m sprayer, we now have the ability to apply prescription maps at individual nozzle resolution. Now my search continues for some useful data to put into the sprayer...
I am starting simple and would like to generate some simple on/off maps for the likes of patch spraying problem weeds.

There are many programs/tools on the market or free for generating and editing shape files for variable rate maps, however I am yet to find one that can effectively provide the data I am after...
I would like to use a phone/tablet when crop walking to mark out polygons in the field using my gps location, which I can then create a shape file from and import to the sprayer. Then either only spray the polygons within the field or spray around them, depending on the situation.

What software are others using for prescription map creation? Gatekeeper/Omnia/other subscription service/free open source apps?
What resolution maps does it produce? I feel working in 24m sqaures is now a bit pointless (although better than nothing) given I can now apply at 0.5m spacings.
How much does it cost?

I can access free satellite ndvi imaging for free (cropsat), which although again the resolution is not great is fine for a starting point and I am happy to work towards higher res imaging with UAV or on sprayer sensing or subscription satellite data as we learn how to use the data and spray system effectively. So initially I am more interested in the field scouting and data editing than a supplier of NDVI data.

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Five nature-recovery projects spanning 100,000ha launched

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Written by Michelle Martin from Agriland

Five nature-recovery projects spanning nearly 100,000ha across the West Midlands, Cambridgeshire, the Peak District, Norfolk and Somerset have been announced by the government and Natural England today (Thursday, May 26).

This is the equivalent in size to all 219 current National Reserves.

The aim of the projects is to deliver nature recovery at a landscape scale, helping to tackle biodiversity loss, climate change and improve public health and well-being.

All five projects will make a significant contribution towards the national delivery of the international commitment to protect at least 30% of land and...