GPS system

jcawley

Member
Trade
Yes a separate nav controller. Was told unless it was a very late model New Holland I still needed a separate nav controller. Which is very expensive
The very newest NH tractors have the ability to allow the Nav-900 (with GFX-350/750) to plug into the CAN system of the tractor. This bypasses the need for the legacy NAVIII controller that is need for vehicles without that CAN plug in. The NAVIII has a valve driver for hydraulic control and the Nav900 does not. Trimble is coming out with a "valve driver" module that will connect to the Nav-900 that will be about half the cost of a NavIII. This will allow you to use the Nav-900 for its gyro sensors and communicate its valve driving to the steering valve without having to purchase a NavIII.... but today you would have to buy a Nav III for an older style AP install. Valve driver should be available Q2 21' i have heard.
As far as how to tell, i would say year and or serial number would give you the best indication.
 

DrWazzock

Member
Location
Lincolnshire
I’ll put it here buf for me as a small farmer I feel that the Agricision OnTrak to be perfectly adequate for my needs. It’s not RTK but DGPS and I have managed to put neat straight preem tramlines onto spring seedbeds with minimal set up time and training. The device sits on your tractor bonnet with magnetic feet and displays a very visible light bar to guide you on the steering. You communicate and configure it using your smart phone via blue tooth and it can tell you total field area and your speed again via your smart phone. It seems much more responsive and accurate than any cheap guidance system I have used previously. No cables on the machine just charge up in the house.
I’m a real Luddite grumpy old cynical bar steward but it gets my stamp of approval. I’d highly recommend it as a budget entry level system to basic GPS guidance. It does actually work.👍
 

David.

Member
Mixed Farmer
Location
J11 M40
How accurate is the Agricision device?
I'm after a second budget GPS, because I am fed up with constantly moving Mojomini from sprayer to spreader tractors, etc, and am concerned that Mojomini will suddenly die one day and leave me looking for something in a hurry.
I wouldnt want to buy something less than 0.5m accuracy bout to bout, which is probably an honest assessment of what I have now, and adequate for fert and grass spraying.
 

Lieven

Member
Mixed Farmer
Location
Veurne, Belgium
Take a look at Fieldbee.com

Fieldbee RTK GNSS L2 receiver with RTK precision (less than 2 cm).

Uses smartphone or tablet as screen.

Very accurate and easy to switch to another tractor.
 

Lieven

Member
Mixed Farmer
Location
Veurne, Belgium
I don’t get why you need rtk on a light bar. You can’t drive to 1-2cm accuracy by hand
Fieldbee doesn't use lightbar, it shows how many cm you have to adjust left/right to drive on the perfect line.
I use it for for every fieldwork, manual steering.

It works very accurate, i can (manual) steer in a marge of 3cm left to 3 cm right of perfect line.
 
Location
East Mids
How accurate is the Agricision device?
I'm after a second budget GPS, because I am fed up with constantly moving Mojomini from sprayer to spreader tractors, etc, and am concerned that Mojomini will suddenly die one day and leave me looking for something in a hurry.
I wouldnt want to buy something less than 0.5m accuracy bout to bout, which is probably an honest assessment of what I have now, and adequate for fert and grass spraying.
Agricision claim 30 cm I think.
 

Rejuvenating swards: Which option is best?

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Written by Brian McDonnell

Maintaining grass quality during mid-season grazing is important. Farmers can maintain quality by entering ideal grazing covers of 1,300 – 1,500kg DM/ha, and grazing down to a residual of 4cm every rotation.

If you are now in a situation where cows are not cleaning out paddocks as well as they should be, leading to the development of steamy grass within the sward, here are some options.

Common options for rejuvenating swards include:

  1. Take a silage cut, probably into bales, remove the material and start again with the aftermath...
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