By | November 2, 2016

A recent demonstration near Taupo of the heaviest model of offset disc harrow in the 4AG range, made an impressive job in discing difficult browntop.

This is often extremely challenging work for a set of discs due to the strong and deep root structure which holds the root mat and clods together even weeks after being sprayed out.



The volcanic ground conditions on the high plateau north east of Taupo were also very undulating which put the 4AG discs Terrainpilot drawbar float system through its paces. To have such a big heavy set of discs in short, sharp terrain like this and discing almost every square foot of the paddock, just proves the clever design of our european factory engineers says 4AGs marketing manager Hamish Raikes.



It is unique conditions like this where all the NZ design input in the 4AG discs come to the fore. You dont get these extremes in overseas countries, most of their cropping is done on relatively flat or rolling surfaces, so the gear is not designed to follow contour. Terrainpilot was one of the first design changes from NZ our European factory made for us more than 10 years ago now, and once again it proved its worth.


Browntop requires a good depth of penetration, and enough cut angle on the gangs to really turn and dice the clods. A set of discs thats too light or doesnt have aggressive enough cut angles, will really struggle in these conditions. The 970 HD model with 710mm scalloped blades all round and tipping the scales at just over 6 ton, were ideal. Hitched to possibly the biggest Claas tractor in the North Island at 400Hp, the combination of horsepower and machine were a good match.



Check out this impressive combination below on our YouTube channel.

"We milk 2600 cows in both North and South Islands, plus grow maize and various crops on 600 hectares of lease ground. We are constantly developing new ground to bring into production and the 4AG 970's are excellent for chopping up old, heavily thatched pasture and contouring rougher areas. Daily throughput is important to our size operation. so we're pretty happy to be averaging 3-4 hectares/hour!"