Practical test: Sulky DPX expert fertiliser spreader Call in the expert What a difference two years make! Back in 2004 we included the previous Sulky DPX within a group test of five spreaders, and its performance was disappointing. Only just after our test, however, Sulky duly launched a new 36m version, and it is this model that we test here. The results on this occasion? Quite a transformation