I have done and it didnt look good. The chopper driver was grumpy, the kemper he had at the time blocked up a lot with it. The yeild wasnt bad though. I have also drilled using only 8 of the rows. It takes a little working out to see which pipe to use. Dont buy fancy inserts, with a little trimming demi-john bungs from the home brew shop work a treat. On my 3m (it is an air drill not a box type) it worked out that 2 of the tramline flaps were still in use so I had tramlines in the crop which was very handy. I did have some info from vaderstad which said to keep the speed right down so that the spacing was better, I would agree with this dont go above 6kph or so. I an not drilling maize with my drill now but that is only because the contractors drill comes with a driver at a time when we are always busy. I would give it a go again.
BG
Anyone drilled maize with a vaserstad 3 m drill without using the inserts??
Thanks for that thought about drilling two rows together then miss three and so on but I will give it a go and see what happens.
We have drilled maize with both a Kverneland Tine Seeder and a Horsch DS disc drill. Both use an accord metering system.
For silage I would not block off any pipes as we found we got bunching in the rows when we tried it. The spacing just seemed better when we used the drill normally.
For grain, we only did it once, planting two rows 15 cm apart, then a gap of 60 cm etc and I would not do it again. It looked ok but we found it did not feed smoothly into the header at harvest. The bunching also meant that stem and cob sizes varied a bit and the cobs did not always strip cleanly leading to more blockages.